Relevant bibliographies by topics / Growth from solutions

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Growth from solutions'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 June 2025

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Journal articles on the topic "Growth from solutions"

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Miyake, Hideto, Hiroyuki Ohtake, and Koichi Sugiyama. "Solution growth of CuInSe2 from CuSe solutions." Journal of Crystal Growth 156, no. 4 (1995): 404–9. http://dx.doi.org/10.1016/0022-0248(95)00280-4.

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Klemenz, C., and H. J. Scheel. "Crystal Growth and Epitaxy from Solutions I. Fundamentals of Growth from Solutions." Materials Science Forum 276-277 (March 1998): 175–90. http://dx.doi.org/10.4028/www.scientific.net/msf.276-277.175.

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Scheel, H. J. "Crystal Growth and Epitaxy from Solutions III. Special Topics of Growth from Solutions." Materials Science Forum 276-277 (March 1998): 201–6. http://dx.doi.org/10.4028/www.scientific.net/msf.276-277.201.

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Scheel, H. J. "Crystal Growth and Epitaxy from Solutions II. Practical Aspects of Growth from Aqueous Solutions and from High-Temperature Solutions." Materials Science Forum 276-277 (March 1998): 191–200. http://dx.doi.org/10.4028/www.scientific.net/msf.276-277.191.

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Rodriguez-Clemente, R., S. Veintemillas-Verdaguer, F. Rull-Pérez, and K. Sangwal. "Crystal growth from boiling solutions." Progress in Crystal Growth and Characterization 17, no. 1 (1988): 1–40. http://dx.doi.org/10.1016/0146-3535(88)90003-2.

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Mishurnyi, V. A., F. de Anda, A. Yu Gorbatchev, V. I. Vasil'ev, and N. N. Faleev. "InGaAsSb growth from Sb-rich solutions." Journal of Crystal Growth 180, no. 1 (1997): 34–39. http://dx.doi.org/10.1016/s0022-0248(97)00170-x.

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Pina, C. M., A. Putnis, and J. M. Astilleros. "The growth mechanisms of solid solutions crystallising from aqueous solutions." Chemical Geology 204, no. 1-2 (2004): 145–61. http://dx.doi.org/10.1016/j.chemgeo.2003.12.002.

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K., Lilly Mary Eucharista, Krishnan C., and Selvarajan P. "STRUCTURAL, MECHANICAL, OPTICAL, THERMAL, ELECTRICAL STUDIES OF A NONLINEAR OPTICAL SINGLE CRYSTAL: GAMMA GLYCINE USING LITHIUM BROMIDE AS AN ADDITIVE." International Journal of Advanced Trends in Engineering and Technology 2, no. 2 (2017): 60–70. https://doi.org/10.5281/zenodo.846411.

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Single crystals of gamma glycine, an organic nonlinear optical material were grown by slow evaporation method from aqueous solutions of lithium bromide. Good optical quality single crystals were grown within a period of 3 weeks. The grown crystals were colorless and transparent. The solubility of the grown crystals has been estimated for various temperatures. The XRD study reveals that the grown crystal crystallizes in the hexagonal crystal system and corresponding lattice parameters were determined.The reflection planes of the sample were confirmed by the powder X-ray diffraction study and diffraction peaks were indexed. Fourier transform infrared (FTIR) study was used to confirm the presence of various functional groups in the grown crystal. The optical spectral analysis of the grown crystal has been performed by UV-Vis-NIR spectroscopy and the band gap energy was found out.Second harmonic generation (SHG) for the materials of this work was confirmed using Nd:YAG laser. The thermal stability of the crystal was studied by thermo gravimetric analysis (TGA) and differential thermal analysis (DTA).The dielectric constant and the dielectric loss were measured for varying frequencies under different temperatures. The impedance measurements were performed as a function of temperature.
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Shubenkova, E. G. "GROWTH OF CONJUGATED SEMICONDUCTOR MONOCRYSTALS FROM SOLUTIONS." Dynamics of Systems, Mechanisms and Machines 7, no. 1 (2019): 231–35. http://dx.doi.org/10.25206/2310-9793-7-1-231-235.

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Chernov, A. A. "Elementary processes of crystal growth from solutions." Uspekhi Fizicheskih Nauk 153, no. 12 (1987): 678. http://dx.doi.org/10.3367/ufnr.0153.198712f.0678.

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Dissertations / Theses on the topic "Growth from solutions"

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Uwaha, Makio, and Katsunobu Koyama. "Transition from nucleation to ripening in the classical nucleation model." Elsevier, 2010. http://hdl.handle.net/2237/13867.

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Pötschke, Markus. "Simulation of electric field-assisted nanowire growth from aqueous solutions." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-194735.

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The present work is aimed at investigating the mechanisms of nanowire growth from aqueous solutions through a physical and chemical modeling. Based on this modeling, deriving an optimized process control is intended. The work considers two methods of nanowire growth. The first is the dielectrophoretic nanowire assembly from neutral molecules or metal clusters. Secondly, in the directed electrochemical nanowire assembly metal-containing ions are reduced in an AC electric field in the vicinity of the nanowire tip and afterwards deposited at the nanowire surface. To describe the transport and growth processes, continuum models are employed. Furthermore, it has been necessary to consider electro-kinetic fluid flows to match the experimental observations. The occurring partial differential equations are solved numerically by means of finite element method (FEM). The effect of the process parameters on the nanowire growth are analyzed by comparing experimental results to a parameter study. The evaluation has yielded that an AC electro-osmotic fluid flow has a major influence on the dielectrophoretic nanowire assembly regarding the growth velocity and morphology. In the case of directed electrochemical nanowire assembly, the nanowire morphology can be controlled by the applied AC signal shape. Based on the nanowire growth model, an optimized AC signal has been designed, whose parametrization allows to adjust to the chemical precursor and the desired nanowire diameter<br>Ziel der vorliegenden Arbeit ist es, mittels physikalischer und chemischer Modelle die Mechanismen des Nanodrahtwachstums aus wässrigen Lösungen zu erforschen und daraus eine optimierte Prozesskontrolle abzuleiten. Dabei werden zwei Verfahren des Nanodrahtwachstums näher betrachtet: Dies sind die dielektrophoretische Assemblierung von neutralen Molekülen oder Metallclustern sowie die gerichtete elektrochemische Nanodrahtabscheidung (engl. directed electrochemical nanowire assembly), bei der metallhaltige Ionen im elektrischen Wechselfeld an der Nanodrahtspitze zunächst reduziert und anschließend als Metallatome abgeschieden werden. Zur Beschreibung der Transport- und Wachstumsprozesse werden Kontinuumsmodelle eingesetzt. Darüber hinaus hat es sich als notwendig erwiesen, elektrokinetische Fluidströmungen zu berücksichtigen, um die experimentellen Beobachtungen zu reproduzieren. Die auftretenden partiellen Differenzialgleichungen werden mittels der Finiten Elemente Methode (FEM) numerisch gelöst. Die Auswirkungen der Prozessparameter auf das Nanodrahtwachstum werden durch den Vergleich von experimentellen Ergebnissen mit Parameterstudien analysiert. Die Auswertung hat ergeben, dass für das dielektrophoretische Wachstum ein durch Wechselfeldelektroosmose (engl. AC electro-osmosis) angetriebener Fluidstrom die Drahtwachstumsgeschwindigkeit und -morphologie maßgeblich beeinflusst. Im Falle der gerichteten elektrochemischen Nanodrahtabscheidung lässt sich die Drahtmorphologie über das angelegte elektrische Wechselsignal steuern. Unter Verwendung des Wachstumsmodells ist ein optimiertes Signal generiert worden, dessen Parametrisierung eine gezielte Anpassung auf den chemischen Ausgangsstoff und den gewünschten Drahtdurchmesser erlaubt
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Soler, Bru Laia. "Liquid-assisted ultrafast growth of superconducting films derived from chemical solutions." Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/667208.

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L'ús generalitzat de superconductors d'alta temperatura (HTS) en aplicacions a gran escala està, en part, encara limitat per l’elevat cost de fabricació de cintes recobertes (CCs). Amb la intenció d'aconseguir un avanç important per assolir un major rendiment, en aquesta tesi hem desenvolupat una tècnica innovadora que combina els beneficis de Deposició de Solucions Químiques (CSD) a baix cost amb les altes velocitats del creixement cristal·lí a partir de fases líquides. Es basa en la formació d'un líquid transitori derivat de solucions de carboxilats, aprofitant els obstacles cinètics per la cristal·lització de la fase d'equilibri. En aquesta tesi doctoral, primer expliquem els fonaments del procés que condueix a la cristal·lització de YBa2Cu3O7-δ assistida per un líquid transitori; i després portem a terme una investigació detallada sobre aquesta tècnica. El "proof-of-principle" de la viabilitat d'aquesta nova aproximació es va aconseguir amb la disponibilitat dels forns tipus RTA que permeten rampes fins a 80ºC/s. Les reaccions implicades en el procés s'observen amb mesures in situ i de microscòpia, entre altres. Primer, la piròlisi resultant de la barreja de propionats de Ba, Cu i Y a baixes temperatures (500ºC) és observada amb espectroscòpia in situ d’infraroig. A continuació, s’utilitza difracció de rajos-X amb llum de sincrotró per revelar les reaccions que tenen lloc per convertir el BaCO3, CuO i Y2O3 en la fase final, així com analitzar la nucleació i el creixement del YBa2Cu3O7-δ des del líquid transitori (TLAG). Per dur a terme el procés, el pas de deposició es realitza amb mètodes d'impressió d'injecció de tinta o revestiment per rotació. Les característiques de les solucions s'han adaptat a la tècnica de deposició i es correlacionen amb la morfologia de la capa resultant. A continuació s'han investigat diversos paràmetres per controlar la velocitat de la reacció limitant per l'eliminació del carbonat de bari amb l’objectiu d’evitar la retenció de carboni a les capes gruixudes epitaxials. Posteriorment, s'estableixen els conceptes bàsics per a la comprensió dels mecanismes de nucleació i creixement del YBCO a partir de TLAG. Amb l'objectiu d'obtenir capes epitaxials de YBCO orientades en l’eix-c, es presenten diverses estratègies per controlar la força de cristal·lització. Els paràmetres rellevants són: la composició de la solució, la pressió d'oxigen, les rampes d’escalfament i les temperatures de creixement. Finalment, les condicions de cristal·lització es correlacionen amb les microestructures i propietats superconductores de les capes resultants. Es presenten dos camins diferents per dur a terme el creixement mitjançant la formació de líquid. Un és a través d’un augment de temperatura a pressió d'oxígen constant (ruta-Temperatura). L’altre procés consisteix en dos passos (ruta-pO2). Per aquest últim, l'eliminació de BaCO3 es desvincula del creixement de YBCO mitjançant un salt en pO2. Cal abordar diversos reptes en funció de la ruta. Alguns d’ells són: la reactivitat del líquid amb els substrats degut a la seva naturalesa altament corrosiva, o una mullabilitat inadequada. Finalment, hem tingut èxit en obtenir pel·lícules fines de YBCO epitaxials d’entre 90-500 nm amb propietats superconductores molt elevades (Tc 90-92K, Jc fins a 5MA/cm2 a 77K), i velocitats de creixement fins a 100 nm/s, augmentat així en un factor 100 la velocitat de creixement de la metodologia de CSD convencional. Aquesta metodologia podria ser traslladada a altres materials.<br>The widespread use of High Temperature Superconductors (HTS) into large scale applications is, in part, still limited by the high costs of coated conductors manufacturing. Aiming for a breakthrough to achieve high throughput, in this thesis we have developed a novel technique that combines the low cost benefits of Chemical Solution Deposition (CSD) with the very high growth rates of crystallization from liquid phases. It relies on the formation of a transient liquid derived from carboxylate solutions, taking advantage of the kinetic hindrances on crystallization to reach the equilibrium phase. In this dissertation, we first explain the basics of the process that leads to YBa2Cu3O7-δ crystallization assisted by a transient liquid and then we elaborate on the results of our investigation about this technique. The “proof-of-principle” of this new approximation viability has been achieved with the use of rapid thermal annealing furnaces, allowing heating rates up to 80ºC/s. The reactions involved in the process are observed with in situ measurements and microscopic analyses, among others. First, the pyrolysis of the Ba, Cu and Y propionates mixture at low temperatures (500ºC) is observed with in situ infrared spectroscopy. Then, time resolved X-ray diffraction with synchrotron light is used to reveal the reaction paths to convert the resulting BaCO3, CuO and Y2O3 to the final phase, as well as nucleation and growth of the YBa2Cu3O7-δ film from the transient liquid. To do so, the deposition step is performed with spin coating or Ink Jet printing methodologies. The solutions characteristics have been adapted to the deposition technique and correlated to the resulting film morphology. Then, several parameters have been investigated to control the rate limiting BaCO3, elimination reaction in order to avoid carbon retention in the final thick epitaxial films. Afterwards, the basic concepts for understanding the nucleation and growth mechanisms of YBCO with TLAG are set. With the aim of obtaining c-axis epitaxial YBa2Cu3O7-δ films, several strategies are presented to control the driving force for crystallization. The relevant parameters are solution composition, oxygen pressure, heating ramps and growth temperatures. Finally, the crystallization conditions are correlated to the resulting films microstructure and superconducting performances. Two different paths are presented to reach TLAG. A direct temperature raise at constant oxygen pressure (Temperature-route), or a two step process (pO2-route). For the latter, BaCO3 elimination is disentangled from YBa2Cu3O7-δ growth by a jump on pO2. Additionally, several challenges needed to be addressed depending on the route: liquid reactivity with the substrates due to its highly corrosive nature or improper wettability, are some of them. Finally, we have succeeded in obtaining highly epitaxial YBCO thin films of 90-500nm with very high superconducting performances (Tc 90-92K, Jc up to 5MA/cm2 at self-field and 77K), at growth rates up to 100nm/s, increased by a factor 100 from those reported with conventional CSD. This methodology could be applied to other materials.
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Queraltó, López Albert. "Growth of functional oxide heterostructures from chemical solutions using advanced processing methodologies." Doctoral thesis, Universitat Autònoma de Barcelona, 2015. http://hdl.handle.net/10803/286006.

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En aquesta tesi doctoral, hem explorat innovadores tècniques de processat basades en el dipòsit de solucions químiques per tal de produir heteroestructures d’òxids, mitjançant processos d’autoassemblatge i autoorganització. Essencialment, s’ha dut a terme una profunda investigació dels mecanismes termodinàmics i cinètics involucrats en la nucleació i cristal·lització de diferents heteroestructures d’òxids (nanoilles i capes primes) amb materials com CeO2, LaNiO3, Ba0.8Sr0.2TiO3 i La0.7Sr0.3MnO3 sobre substrats monocristal·lins (Y2O3:ZrO2, LaAlO3, SrTiO3) i tecnològics com silici o cintes metàl·liques recoberts amb capes d’òxids. Tractaments tèrmics usant rampes d’escalfament ràpides (∼20 ºC/s) han permès separar la nucleació del creixement. En primer lloc, hem reportat que es possible aconseguir cristal·litzar, fins i tot epitaxialment, a baixes temperatures (<500 ºC). També hem determinat el paper que juguen diferents paràmetres de processat (temperatura, rampa d’escalfament i atmosfera), i el tipus i orientació del substrat en les velocitats de nucleació i creixement, com també en la morfologia final del sistema. Anàlisis termodinàmics indiquen que la tensió creada entre capa i substrat té una contribució important en la nucleació i creixement. A més, s’ha pogut veure que la situació de tensió del sistema està altament influenciada per les diferències en l’expansió tèrmica soferta entre capa i substrat. També hem demostrat que el creixement dels grans segueix un comportament auto-limitat està en gran mesura influenciat per un procés de difusió atòmica activat tèrmicament. Curiosament, la transformació des de material policristal·lí a epitaxial segueix el mateix comportament, i està impulsat per una reducció en les frontes de gra policristal·lines. Les velocitats de creixement del procés (0.01-0.1 nm/s) depenen en gran mesura de com ràpid el material epitaxial creix respecte el policristal·lí. En aquest sentit, hem pogut calcular que els coeficients de difusió atòmica epitaxials són un ordre de magnitud més grans que els policristal·lins, 10-19 i 10-20 m2/s respectivament. S’ha determinat que el gruix de la capa pot influenciar negativament en la velocitat de creixement epitaxial, dificultant la obtenció de capes epitaxials a gruixos grans. En la mateixa línea, hem implementat i utilizat una metodologia innovadora com és la irradiació làser en condicions atmosfèriques per al creixement d’heteroestructures d’òxids, com a alternativa als tractaments tèrmics. La influència dels mecanismes tèrmics fotoinduïts s’ha avaluat mitjançant simulacions numèriques, usant els paràmetres òptics i termofísics dels diferents materials. Així doncs, hem demostrat la capacitat d’assolir la descomposició de capes metal·lorgàniques precursores, en particular propionats de Ce-Zr, amb temps de processat significativament inferiors i amb resultats equivalents als tractaments tèrmics convencionals. El disseny de patrons micromètrics ha estat possible gràcies al confinament espacial del feix làser. Altrament, també s’ha aconseguit la cristal·lització epitaxial de capes d’òxids sobre substrats monocristal·lins i tecnològics després d’una optimització en les condicions experimentals (fluència, nombre de polsos, temperatura del substrat, etc). S’ha observat que aquest creixement epitaxial és significativament més ràpid comparat amb els tractaments tèrmics (poques mil·lèsimes de segon comparat amb desenes de minuts). La raó d’aquest creixement tant ràpid s’ha atribuït principalment a les temperatures més elevades assolides amb els tractaments làser que tenen una influència rellevant en la difusió atòmica. Tanmateix, hem proposat que altres fenòmens com els grans gradients tèrmics dins les capes (1010 ºC/m), com també efectes fotoquímics derivats del trencament directe dels enllaços químics pels fotons làser poden tenir també una contribució important. Finalment, hem vist que les propietats funcionals de les capes crescudes amb làser són bastant similars a aquelles obtingudes amb tractaments tèrmics. Les diferents metodologies de creixement combinades amb tècniques de caracterització avançades (microscòpies de força atòmica i electròniques, difracció de raig X, espectroscòpies infraroja-visible-ultravioleta, el·lipsometria) han permès aquest detallat estudi i una millor comprensió dels mecanismes de nucleació i creixement de heteroestructures d’òxids a partir del dipòsit de solucions químiques. Les metodologies i anàlisis desenvolupats han estat fonamentals per al desenvolupament d’aquesta tesi i el seu ús pot ésser traslladat a altres sistemes.<br>In this thesis, we have explored innovative processing methodologies based on the deposition of chemical solutions to produce oxide heterostructures through self-assembling and self-organization processes. Essentially, we performed an in-depth investigation of the thermodynamic and kinetic mechanisms involved in nucleation and crystallization of different oxide heterostructures (nanoislands and thin-films) involving doped-CeO2, LaNiO3, Ba0.8Sr0.2TiO3 and La0.7Sr0.3MnO3 on single crystals (Y2O3:ZrO2 (YSZ), LaAlO3, SrTiO3) and technical substrates like silicon wafers or oxide-buffered stainless steel metallic tapes. Rapid Thermal Annealing (RTA) furnaces were successfully employed to separate nucleation and coarsening through the use of very fast heating ramps (∼20 ºC/s). First of all, we reported that crystallization and even epitaxial growth can be achieved at very low temperatures (<500 ºC). We also determined the role of the different processing parameters (temperature, heating ramp and atmosphere), substrate type and orientation on nucleation and growth rates of nanoislands and films, and the final morphology. Thermodynamic analyses indicated that strain has an important contribution in nucleation, as well as the final morphology of the system. The strain state of the different heterostructures was found to strongly depend on thermal expansion coefficients of film and substrate. We also demonstrated that grain coarsening follows a self-limited behavior, and it is highly influenced by a thermally-activated atomic diffusion. Interestingly, we also determined that the transformation from random to epitaxially-oriented material follows the same growth behavior, and it is driven by the reduction of polycrystalline grain boundaries. The growth rate of the process (0.01-0.1 nm/s) highly depends on how fast the epitaxial material grows as compared to the coarsening of polycrystalline grains. We calculated that the epitaxial atomic diffusion coefficients are one order of magnitude larger than polycrystalline coefficients, 10-19 and 10-20 m2/s, respectively. Additionally, we determined that the epitaxial growth rate depends on precursor layer thickness, and this might be a drawback for reaching high epitaxial thick films. A very new strategy such as Pulsed Laser Annealing at atmospheric conditions has been implemented and employed as an alternative to thermal treatments for the growth of oxide heterostructures. The influence of photo-induced thermal mechanisms has been evaluated through numerical simulations, employing optical and thermo-physical properties of different materials. We have demonstrated the capability to achieve decomposition of CSD precursor films with shorter processing times than in thermal treatments with equivalent results, particularly for the case of Ce-Zr propionates. The spatially-confined nature of the laser beam has also permitted to design micrometric patterned structures. Epitaxial crystallization of oxide films has also been achieved on single crystal and technical substrates after optimization of experimental conditions (fluence, number of pulses, substrate temperature, etc). A significantly faster epitaxial growth compared to thermal treatments has been achieved, i.e. few milliseconds vs tens of minutes. This rapid growth is mostly caused by the higher temperatures developed by laser annealing and influencing atomic diffusion. Additionally, we proposed that other mechanisms should be considered such as temperature gradients developed inside films (1010 ºC/m), as well as photochemical effects caused by direct bond dissociation by the laser photons. The functional properties of laser-grown films have been evaluated and compared with equivalent samples produced using thermal treatments, showing quite similar results. The different growth methodologies employed combined with advanced characterization techniques (atomic force and scanning transmission electron microscopies, advanced x-ray diffraction measurements, infrared-visible-ultraviolet spectroscopies, ellipsometry) allowed me to perform the profound study undertaken and provided us with a better understanding of nucleation and growth mechanisms of oxide heterostructures from chemical solution deposition. The methodologies and analyses developed have been fundamental for the development of this thesis and their application can be made extensive to other systems.
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Hilton, Anne Marie. "The formation and growth of CO←2 gas bubbles from supersaturated aqueous solutions." Thesis, University of Nottingham, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334502.

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Deodhar, Anirudh M. "Computational Study of Adiabatic Bubble Growth Dynamics from Submerged Orifices in Aqueous Solutions of Surfactants." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337100942.

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Li, Ziliang. "Growth and Characterization of Nanocomposite YBa2Cu3O7-δ – BaMO3 (M = Zr, Hf) Thin Films from Colloidal Solutions". Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/663979.

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El YBa2Cu3O7-δ es el superconductor de alta temperatura con mayor potencial tecnológico para aplicaciones de potencia e imanes que trabajan bajo campos magnéticos elevados. Sin embargo, todavía es un reto mejorar sus prestaciones en forma de película delgada epitaxial con un coste bajo de fabricación. La deposición de soluciones químicas ha surgido como una técnica muy competitiva para obtener láminas delgadas epitaxiales y multicapas de alta calidad con nanoestructuras controladas. Hemos desarrollado un proceso novedoso de crecimiento mediante Calentamiento Flash que muestra un excelente potencial para la producción industrial en continuo de conductores epitaxiales de YBa2Cu3O7-δ. En esta tesis hemos establecido, por primera vez, una imagen completa que describe las fases intermedias y la evolución de la microestructura durante el calentamiento. Hemos extendido la ventana de la temperatura de crecimiento sin ninguna degradación de las propiedades superconductoras, por lo que la deposición de conductores epitaxiales de YBa2Cu3O7-δ es compatible con el uso de sustratos de cinta metálica con capas tampón de CeO2. Además, también hemos encontrado que este proceso de crecimiento promueve la formación de una alta concentración de defectos de apilamiento y, por lo tanto, de tensiones a escala nanométrica. Las láminas ultrafinas de YBa2Cu3O7-δ y nanocompuestos, en el rango de 5-50 nm, se prepararon después de una optimización de los parámetros de crecimiento. La reducción de la energía interfacial induce una alta densidad de defectos de apilamiento, lo que conduce a una matriz de YBa2Cu3O7-δ altamente distorsionada. Esta modificación microestructural se vuelve extremadamente grave cuando el grosor de la lámina delgada disminuye por debajo de 25 nm, degradando significativamente las propiedades superconductoras. También hemos estudiado la evolución de las características de las nanopartículas segregadas espontáneamente con el espesor de las láminas delgadas y su influencia en la eficiencia del anclaje de vórtices. La preparación de nanocompuestos de YBa2Cu3O7-δ a partir de nanopartículas de óxido preformadas y no reactivas que forman soluciones coloidales ha demostrado ser una estrategia muy exitosa para lograr un estricto control de las características de las nanopartículas y la optimización de la nanoestructura de las láminas delgadas superconductoras. Las perovskitas BaMO3 (M = Zr, Hf) son las composiciones más prometedoras de nanopartículas preformadas que hasta ahora han conducido a láminas delgadas de nanocompuestos de alta calidad con altas concentraciones de nanopartículas (20-25% molar). La composición y el tamaño de las nanopartículas han demostrado ser factores cruciales para adaptar el rendimiento del anclaje de vórtices bajo campos magnéticos aplicados. La aplicación del proceso de crecimiento de calentamiento flash al crecimiento de láminas delgadas nanocompuestas permite la preservación del tamaño de las nanopartículas y la generación de una alta densidad de defectos de apilamiento de pequeña longitud, que desempeñan un efecto sinérgico para aumentar la eficiencia de los centros de anclaje de vórtices artificiales y mejorar así las propiedades de los conductores. La técnica de multideposición es efectiva para aumentar aún más el espesor de la lámina delgada, mientras que la eficacia del anclaje de vórtices se conserva y la capacidad de transporte de corriente eléctrica de las láminas delgadas nanocompuestas aumenta.<br>YBa2Cu3O7-δ (YBCO) is the best material choice to address the performances required in power applications and magnets working under high magnetic fields. However, it is still challenging to achieve low manufacturing costs and high superconducting performances of coated conductors (CCs) for large scale power applications. Chemical Solution Deposition has emerged as a very competitive technique to obtain epitaxial films and multi-layers of high quality with controlled nanostructures. We have developed a novel Flash Heating growth process that shows high potential to be compatible with the industrial reel-to-reel production of YBCO CCs. Here we have set up, for the first time, a full image describing the intermediate phase and microstructure evolution during this heating process. We extend the growth temperature window down to 750 ºC without any degradation of superconducting properties, making it being compatible with the deposition of YBCO CCs on CeO2-caped metallic tape substrates. In addition, we have also found that this growth process promotes the formation of a high concentration of stacking faults and so of nanostrain. YBCO and nanocomposite ultrathin films, in the range of 5-50 nm, have been prepared after a series optimization of growth parameters. The relief of the interfacial energy induces a high density of stacking faults, leading to a highly distorted YBCO matrix. Such microstructural disorder becomes extremely serious when the film thicknesses decrease below 25 nm, significantly degrading the superconductivity. We have also studied the evolution of the characteristics of spontaneous segregated nanoparticles with nanocomposite film thicknesses and their influence on the vortex pinning efficiency. The preparation of YBCO nanocomposites from non-reactive preformed oxide nanoparticles forming colloidal solutions has demonstrated to be a very successful strategy to achieve a tight control of the nanoparticle characteristics and the optimized nanostructural landscape on the superconducting films. BaMO3 (M=Zr, Hf) perovskites are shown to be the most promising compositions of preformed nanoparticles up to now that led to high quality nanocomposite films at high nanoparticle concentrations (20-25 mol%). The composition and size of nanoparticles have demonstrated to be crucial factors for tailoring vortex pinning performance in applied magnetic field. The application of the Flash Heating growth process in the growth of nanocomposite films allows both the preservation of nanoparticle size and the generation of a high density of short stacking faults, which play a synergistic effect to increase the artificial pinning centers and enhance the strong pinning contribution. Multi-deposition technique is proved effective to further enhance the film thickness while vortex pinning efficiency is preserved and current-carrying capacity of the nanocomposite films is increased.
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Pötschke, Markus [Verfasser], Gianaurelio [Akademischer Betreuer] Cuniberti, and Robert Melville [Akademischer Betreuer] Metzger. "Simulation of electric field-assisted nanowire growth from aqueous solutions / Markus Pötschke. Betreuer: Gianaurelio Cuniberti. Gutachter: Robert Melville Metzger." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://d-nb.info/1088185630/34.

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Nerowski, Alexander. "Electrochemical Metal Nanowire Growth From Solution." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-118937.

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The aim of this work is to make electrochemical metal nanowire growth a competitive method, being up to par with more standardized procedures, like e.g. lithography. This includes on the one hand the production of nanowires as reliable and reproducible parts, potentially suited for nanoelectronic circuit design. Therefore, this work presents a systematic investigation of the causes of nanowire branching, the necessary conditions to achieve straight growth and the parameters affecting the diameter of the wires. The growth of ultrathin (down to 15 nm), straight and unbranched platinum nanowires assembly is demonstrated. On the other hand, it is the objective to go beyond purely electronic applications. An examination of the crystallography of the wires reveals nanoclusters inside the wire with a common crystallographic orientation. The versatility of the wires is illustrated by implementing them into an impedimetric sensor capable of the detection of single nanoscaled objects, such as bacteria<br>Die Zielstellung der vorliegenden Arbeit ist es, die elektrochemische Herstellung von metallischen Nanodrähten zu einer wettbewerbsfähigen Methode zu machen, die sich mit standardisierten Prozessen, wie z. B. der Lithographie messen kann. Dies beinhält auf der einen Seite die Produktion der Nanodrähte als zuverlässige und reproduzierbare Bauteile, die im nanoelektrischen Schaltungsdesign Verwendung finden können. Daher befasst sich diese Arbeit mit einer systematischen Untersuchung der Ursachen für die Verzweigung von Nanodrähten, den notwendigen Bedingungen um gerades Wachstum zu erlangen und mit den Parametern, die Einfluss auf den Durchmesser der Drähte haben. Der Wuchs von sehr dünnen (bis zu 15 nm), geraden und unverzweigten Nanodrähten aus Platin wird gezeigt. Auf der anderen Seite ist es erklärtes Ziel, über rein elektronische Anwendungen hinaus zu gehen. Eine Untersuchung der Kristallographie der Nanodrähte zeigt, dass die Drähte aus Nanopartikeln bestehen, die eine gemeinsame kristallographische Orientierung aufweisen. Die Vielseitigkeit der Drähte wird anhand einer Sensoranwendung gezeigt, mit der es möglich ist, einzelne nanoskalige Objekte (wie z. B. Bakterien) zu detektieren
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Bordui, Peter Frank. "Crystal growth of KTiOPO₄ from high-temperature solution." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/14962.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1987.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE.<br>Vita.<br>Bibliography: leaves 117-119.<br>by Peter Frank Bordui.<br>Ph.D.
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Books on the topic "Growth from solutions"

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Brian, Lent, ed. Single crystal growth of semiconductors from metallic solutions. Elsevier, 2007.

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1952-, Myerson Allan S., and United States. National Aeronautics and Space Administration., eds. Concentration dependence of solution shear viscosity and solute mass diffusivity in crystal growth from solutions. National Aeronautics and Space Administration, 1995.

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Mothers & Others for a Livable Planet, Inc., ed. The way we grow: Good-sense solutions for protecting our families from pesticides in food. Berkley Books, 1993.

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Eurybiades, Busenberg, and Geological Survey (U.S.), eds. Data on the crystal growth of calcite from calcium bicarbonate solutions at 34p0sC and CO2 partial pressures of 0.101, 0.0156 and 0.00102 atmospheres. U.S. Dept. of the Interior, U.S. Geological Survey, 1999.

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Eurybiades, Busenberg, and Geological Survey (U.S.), eds. Data on the crystal growth of calcite from calcium bicarbonate solutions at 34⁰C and CO2 partial pressures of 0.101, 0.0156 and 0.00102 atmospheres. U.S. Dept. of the Interior, U.S. Geological Survey, 1999.

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International Workshop on Emerging Issues in the Sustainable Economic Growth of Vietnam : International Experiences and Solutions (2008 Thai Nguyen University). Emerging issues in the sustainable economic growth of Vietnam: International experiences and solutions : time, from 22nd to 24th August, 2008 : venue, LRC-Thai Nguyen University. Statistical Pub. House, 2009.

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Enqvist, Yuko. Comprehensive study of crystal growth from solution. Lappeenranta University of Technology, 2004.

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Abraham, Jay. The sticking point solution: 9 ways to move your business from stagnation to stunning growth in tough economic times. Vanguard Press, 2009.

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Abraham, Jay. The sticking point solution: 9 ways to move your business from stagnation to stunning growth in tough economic times. Vanguard Press, 2009.

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United States. National Aeronautics and Space Administration., ed. Annual technical report (period, January 1, 1993 till December 31, 1993) on direct observation of crystal growth from solution using optical investigation of a growing crystal face: Submitted to Lewis Research Center, National Aeronautics and Space Administration ... National Aeronautics and Space Administration, 1994.

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Book chapters on the topic "Growth from solutions"

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Authier, A., K. W. Benz, M. C. Robert, and F. Wallrafen. "Crystal Growth from Solutions." In Fluid Sciences and Materials Science in Space. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-46613-7_12.

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Elwell, Dennis. "Growth from Other Solutions." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145333.ch45.

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Elwell, Dennis. "Growth from High-Melting Solutions." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145333.ch36.

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Abbona, Francesco, and Dino Aquilano. "Morphology of Crystals Grown from Solutions." In Springer Handbook of Crystal Growth. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-74761-1_3.

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Elwell, Dennis. "Crystal Growth from Melts and Solutions." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145333.ch26.

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Raz, Eli, Ariel Notcovich, and S. G. Lipson. "Nonequilibrium Growth of Crystals from Supersaturated Solutions." In Growth, Dissolution and Pattern Formation in Geosystems. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-015-9179-9_7.

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Tachibana, Makoto. "Mechanisms of Crystal Growth from Fluxed Solutions." In NIMS Monographs. Springer Japan, 2017. http://dx.doi.org/10.1007/978-4-431-56587-1_2.

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Smolsky, I. L., A. E. Voloshin, E. B. Rudneva, N. P. Zaitseva, and J. De Yoreo. "Mechanisms of Striation Formation in Layer Growth of Crystals from Solutions." In Growth of Crystals. Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0537-2_11.

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Yakovlev, G. I., and A. V. Streltsov. "Formation of Industrial Policy Under Uncertainty Growth." In Engineering Economics: Decisions and Solutions from Eurasian Perspective. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53277-2_2.

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Bolkhovityanov, Yu B., A. S. Yaroshevich, M. A. Revenko, and E. M. Trukhanov. "InGaAsP Solid Solutions: Phase Diagrams, Growth from the Melt on GaAs Substrates, Elastically Strained Epitaxial Layers." In Growth of Crystals. Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0537-2_7.

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Conference papers on the topic "Growth from solutions"

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Becerra Araneda, Abraham A., Martín A. Rodríguez, Mariano A. Kappes, and Ricardo M. Carranza. "Pitting Corrosion of a Ni-Cr-Fe Alloy in Chloride and Thiosulfate Solutions: One-dimensional Artificial Pit Electrode Studies." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16523.

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Abstract Ni-Cr-Fe alloys such as UNS N08800 (alloy 800) suffer pitting corrosion in chloride (Cl−) plus thiosulfate (S2O32−) solutions. This occurs due to a synergistic effect between both ions in a certain range of solution concentration and electrochemical potential. Potentiodynamic tests in 1 M NaCl + 10−3 M S2O32− solutions evidenced thiosulfate pitting by a peak in anodic current centered near -0.15 VSCE. The maximum anodic current of this peak increased with a decrease in potential scanning rate, reflecting the autocatalytic nature of the pitting process and the increased available time for pit growth. A wire of alloy UNS N08800 was embedded in epoxy to study the kinetics of anodic dissolution using the one-dimensional artificial pit electrode. Pits were grown at -0.16 VSCE, near the anodic peak observed in potentiodynamic tests, and at 0.4 VSCE, i.e. above the conventional chloride pitting potential. At -0.16 VSCE, the one-dimensional pit was under ohmic drop control. When the wire was polarized to 0.4 VSCE, the usual transitions from activation, ohmic drop and diffusion control regimes were observed. Thiosulfate increased the rate of anodic dissolution during the activation-controlled regime of pit growth and decreased the transition potential (ET), the potential where pit growth shifts from activation/ohmic drop control to diffusion control.
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Huggins-Gonzalez, Angeire S., Ramgopal Thodla, Feng Gui, Bostjan Bezensek, and Brian Chambers. "Effect of Loading Profile and Sour Environment on Cracking Behavior of C110." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19401.

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Abstract Crack initiation and propagation in sour environments have been studied as part of understanding sulfide stress cracking mechanism. This research evaluated crack growth rate of two heats of C110 under different loading modes and exposed to two different solutions with different buffer capacities (NACE Solution B and C). There was no effect of decreasing K profile on the crack growth rate behavior in either environment on either heat. The Kth estimated from DCB tests for heat I in solution C were consistent with the values measured using the constant K test method. However, in solution B, stable cracking was observed under constant K conditions at K values lower than the Kth measured in the DCB tests. The difference in the crack growth rate behavior between solution B and solution C is likely associated with the different buffer capacities of the two solutions. Solution B is a more stable buffer (acetic acid/sodium acetate) and hence is likely to support significantly higher metal dissolution rates by supporting higher cathodic current densities on the crack flanks.
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Andresen, Peter L., and Lisa M. Young. "Crack Tip Microsampling & Growth Rate Measurements in Low Alloy Steel in High Temperature Water." In CORROSION 1995. NACE International, 1995. https://doi.org/10.5006/c1995-95156.

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Abstract The importance of dissolution of MnS inclusions in environmentally assisted cracking (EAC) of pressure vessel steels in high temperature water is well recognized. However, no direct measurement of the crack tip chemistry that develops during EAC has ever been performed, and only estimates exist for the dissolution rate of MnS and the resulting sulfur levels in the crack. In this manuscript, microsampling of the crack tip solution in A533B low alloy steel (0.013% S) exposed to constant and cyclic loading in 288°C water under various test conditions has been used to obtain direct measurements of the crack tip sulfur concentration, while simultaneously monitoring crack length. A reversing direct current potential drop method was used to continuously monitor crack length. Ion chromatography (IC) and inductively coupled plasma (ICP) were used to measure dissolved sulfur species in the microsampled solutions. Most experiments involved varying the corrosion potential (from = 0.12 to ≈ −0.5 Vshe) by changing the dissolved oxygen concentration between 10 ppm and 0 ppm (nitrogen deaerated) in high purity water. At 10 ppm oxygen, high crack growth rates were observed and the microsampled solutions contained between 1 and 2 ppm sulfur, about 10 times higher than at 0 ppm oxygen, where crack growth rates were low. Measurements of the room temperature solutions showed that most sulfur was present as sulfate, although in the high temperature deaerated water in the crack, MnS undoubtedly dissolves to form HS− and H2S. Decreasing the loading frequency from 10−4 to 10−5 Hz also lowered both the crack growth rate and the crack tip sulfur concentration. Very high microsampling rates effectively flushed the crack tip chemistry, decreasing the crack tip sulfur content and crack growth rate. This research provides a technique for directly determining the effects of MnS inclusion dissolution, corrosion potential, (bulk) solution impurities, solution flow rate, and loading conditions on crack tip chemistry and, in turn, on crack growth rate and thus can contribute significantly to the fundamental understanding of EAC.
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Gao, Jie, and David J. Quesnel. "Stress Corrosion Cracking of Sensitized AA5083 in NaCl Solution." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11284.

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Abstract In this study, commercial AA5083 aluminum alloy was sensitized at 175oC in order to create a two-phase microstructure that is highly susceptible to stress corrosion cracking (SCC). To characterize the SCC behavior of these sensitized AA5083 alloy in NaCl solution, open circuit continuous immersion SCC tests were conducted on pre-cracked double cantilever beam (DCB) specimens with an initial stress intensity factor (KI) of 15 ksiin (16.5 MPam) in NaCl solutions with five different concentrations, i.e. 0.01, 0.1, 0.6, 1, and 3 mol/L. Three SCC characteristics, incubation time, initial crack growth rate, and total crack growth, were found strongly dependent on solution concentration: incubation time decreased with increasing NaCl concentration, while both initial crack growth rate and total crack growth increased with solution concentration. A linear relationship between initial crack growth rate and NaCl concentration, as well as between total crack growth and NaCl concentration, was also found on specimens sensitized for 10 days (240 hours). Since the growth of cracks under fixed loading line displacement decreases the applied K, the arrest of cracks that limits the total crack growth may be interpreted as a concentration dependent threshold stress intensity, KISCC. Fracture surfaces produced by SCC in NaCl solutions with different concentrations and on different values of K, when investigated by scanning electron microscopy, all demonstrated intergranular cracking with similar characteristics. Discussion centers on relative contributions to SCC from mechanical driving forces and chemical driving forces.
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Zamanzadeh, Mehrooz, Yin-Shi Liu, Paul Wynblatt, and Garry W. Warren. "Growth of “Dendrite-Like” Structures under Humid Conditions." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88391.

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Abstract A study is reported of the growth of “dendrite-like” structures on deliberately contaminated metallized substrates under humid conditions. The metallized substrates consisted of two copper conducting lines deposited on a-alumina, and were contaminated with controlled amounts of cupric chloride. In order to assess the effects of the contaminant, the water up-take characteristics of the unmetallized substrate were determined on both clean and contaminated c-alumina as a function of relative humidity. In addition, the effects of contamination on dendrite-like growth was investigated in experiments where a 30V bias was applied across the conducting lines. The resulting growth patterns follow the irregularities of the substrate and are quite different from classical dendrites grown in bulk solutions.
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Athanassopoulos, Evangelos, Stamatia Rokidi, and Petros G. Koutsoukos. "Barium Sulfate Crystal Growth and Inhibition: Implications of Molecular Structure on Scale Inhibition." In CORROSION 2016. NACE International, 2016. https://doi.org/10.5006/c2016-07460.

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Abstract Barium sulfate scale deposits are serious impediments in the gas and oil production industry, as they are tenaciously adhering on surfaces and they are hard to remove due to the independence of their solubility on pH. The practice most commonly applied is prevention of their formation using water soluble compounds acting as inhibitors which block active crystal growth sites. Blocking efficiency depends to a large extent on their molecular structure. In the present work we report on the kinetics of nucleation and crystal growth of Barium Sulfate from aqueous supersaturated solutions using different solvents and organophosphorus compounds dissolved in aqueous media. More specifically, nucleation and growth of barium sulfate was studied in aqueous media, in water miscible solvent, monoethylene glycol (MEG) and in water - n-dodecane mixtures. The stability domain, the kinetics of spontaneous precipitation and the seeded crystal growth of barium sulfate were investigated in aqueous supersaturated solutions. In aqueous media the effect of amino tris (methylenephosphonic) acid (ATMP) on the kinetics of crystal growth of barium sulfate was studied in seeded supersaturated solutions, over a wide range of pH covering both the acid and the alkaline ranges. The kinetics parameters were measured at constant supersaturation. The results of the kinetics analysis for the crystal growth of barium sulfate showed that ATMP was an efficient inhibitor of the crystal growth of BaSO4. As the concentration increased the inhibition efficiency dropped apparently due the increase of the solution supersaturation concomitant with the increasing solubility of BaSO4 in the presence of the additives, possibly because of the formation of Ba-phosphonate complexes. ATMP could inhibit barium sulfate scale not only in alkaline pH values but also in acidic pH values.
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Amjad, Zahid. "Seeded Growth of Calcium-Containing Scale Forming Minerals in the Presence of Inhibitors." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88421.

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Abstract The conventional seeded growth technique has been used to study the influence of solution pH in the range 2.8 to 8.8 on the crystal growth of calcium sulfate dihydrate (CaSO4∙2H2O, gypsum) from stable supersaturated solutions in the presence of polyacrylic acids. Results indicate that at a constant solution pH, crystal growth of gypsum in the presence of polyacrylic acid is preceeded by an initial slow growth reaction, hereafter called induction period, following which crystal growth of gypsum proceeds with a rate close to that in pure solution. Kinetic data collected as a function of solution pH in the range 2.8 to 8.6 suggest that solution pH has a marked effect on the induction period. The observed dependence of induction period on solution pH may be explained in terms of the degree of ionization of polyacrylic acid. The influence of commonly encountered scales as nucleators for gypsum growth has also been investigated using the conventional seeded growth technique. Kinetic data of this study indicate that CaCO3 is an effective nucleator. Results on the influence of several products on the CaCO3 induced gypsum crystal growth show marked dependence on product composition. In the case of calcium phosphate crystal growth, the constant composition technique has been used to study the influence of crystal growth inhibitors. A simple Langmuir adsorption model has been proposed to account for the marked inhibitory influence exhibited by an acrylic acid-based copolymer.
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Hatcher, P. R., and K. E. Szklarz. "Near-Threshold Fatigue Crack Propagation Behavior of a Low Alloy Steel in Pressurized Dilute Brine Solutions." In CORROSION 1992. NACE International, 1992. https://doi.org/10.5006/c1992-92150.

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Abstract Fatigue crack propagation (FCP) tests were conducted on low alloy steels in ambient air and pressurized dilute brine solutions with pH at 6.5 or 10.5, and pressure at 6.9 MPa. The load shedding technique was used to determine near-threshold FCP behavior. FCP rates in the brine solutions were compared with FCP rates in air. Results showed that a stress level or crack growth rate existed above which mechanical effects governed fatigue crack growth rates and below which corrosion at the crack tip accelerated growth rates. Under test conditions of 1 Hz and R=0.1 (ratio of minimum to maximum load), this transition occurred at a stress intensity factor range of approximately 30 MPa √m and a crack growth rate of 9x10−5 mm/cycle. Steel exposed to the brine at a pH of 6.5 exhibited higher crack growth rates than steel exposed to the brine at a pH of 10.5. The threshold stress intensity factor ranges in both fluids were higher than the threshold range in air. This was attributed to crack closure resulting from corrosion product buildup between the crack surfaces.
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Zapp, Philip E. "Effect of Nitrite Concentration on PIT Depth in Carbon Steel Exposed to Simulated Radioactive Waste." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98172.

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Abstract The growth of pits in carbon steel exposed to dilute (0.055 M nitrate-bearing) alkaline salt solutions that simulate radioactive waste was investigated in coupon immersion tests. Most coupons were tested in the as-received condition, with the remainder having been heat treated to produce an oxide film. Nitrite, which is an established pitting inhibitor in these solutions, was present in concentrations from 0 to 0.031 M to 0.16 M; the last concentration is known to prevent pitting initiation in the test solution at the 50°C test temperature. The depths of the deepest pits on coupons of particular exposure conditions were measure microscopically and were analyzed as simple, type 1 extreme value statistical distributions, to predict the deepest expected pit in a radioactive waste tank subject to the test conditions. While the growth rate of pits could not be established from these tests, the absolute value of the deepest pits predicted is of the order of 100 mils after 448 days of exposure. The data indicate that even nitrite concentrations insufficient to prevent pitting have a beneficial effect on limiting the growth of deepest pits.
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Tzachristas, A., R. E. Malamoudis, D. G. Kanellopoulou, et al. "Scale Formation and Wetting of Surfaces: a Microfluidics Investigation." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16605.

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ABSTRACT Multiphase flow processes taking place in oil production operations, CO2 and/or natural gas storage in underground reservoirs, in geothermal energy production, membrane operations etc., are accompanied with undesirable scale deposits formation either on rocks or on the walls of pores or metallic equipment, rendering the corresponding operations significantly less efficient. Scale formation depends not only on the morphology and structure but also on the wetting properties of the substrates on which scale is deposited or formed through nucleation and crystal growth. In the present work, in situ nucleation and growth of calcium carbonate is investigated in a microfluidics cell both in the absence of organic phase. Nucleation and crystal growth were directly observed in both hydrophobic and hydrophilic microchannels. Results are compared with work done in batch reactors, which showed that the presence of organic, water immiscible phase accelerated the formation of calcium carbonate, while depending on the solution supersaturation different metastable calcium carbonate phases were stabilized. The confinement of the supersaturated solutions in the microchannels revealed that the mechanisms changed from bulk to surface diffusion, depending on the flow rates of the supersaturated solutions in the microchannels.
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Reports on the topic "Growth from solutions"

1

Wang, Dr Jiann-Chyuan. Global Perspectives on Premature Deindustrialization: Insights from APO Member Economies. Asian Productivity Organization, 2024. http://dx.doi.org/10.61145/fypd3249.

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This report examines the critical issue of premature deindustrialization across diverse economies, exploring causes, implications, and potential solutions to this global phenomenon that challenges economic growth and development. The report analyzes nine APO member economies, investigating how premature deindustrialization impacts productivity, competitiveness, and economic resilience. By synthesizing lessons from successful industrial transformations and offering policy recommendations, the report provides valuable insights for policymakers. It emphasizes the need for comprehensive strategies to foster new growth sources, and serves as a resource for developing more resilient, inclusive, and sustainable economies in today’s rapidly changing global landscape.
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Avis, Rupert, and Poppy Richards. Place-Based Solutions and Air Quality in the Global South. Institute of Development Studies, 2024. http://dx.doi.org/10.19088/k4dd.2024.076.

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This rapid evidence review provides an overview of place-based approaches and its importance in terms of air quality management. The review compiles evidence from a range of sources. The review acknowledges that the expansion of urban areas and populations is associated with both positive and negative consequences. Cities and metropolitan areas are considered to be engines of economic growth; however, cities are also responsible for about 70% of the world's carbon emissions. Emerging trends in air quality management recommend that effective air quality management requires not only diagnosing and modelling air pollutants, but the development of a holistic approach where the spatial nature of air pollutants, socio-economic and institutional factors are integrated.
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Wakoli, Martha, Nyamolo Abagi, Kiplabat Tarus, and Shalom Mulinge. Leave No One Behind: Bridging the Energy Access Gap with Innovative Off-Grid Solar Solutions. Efficiency for Access, 2024. https://doi.org/10.70098/ewrx1506.

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This Efficiency for Access research spotlights the gap in access to life-changing, off-grid solar appliances for millions worldwide. The report highlights the opportunity and steps that governments, entrepreneurs, investors, and other stakeholders have to accelerate sector growth, and the potential business opportunities that can come from this.
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García Zaballos, Antonio, and Ginya Truitt Nakata. Bridging Gaps, Building Opportunity: Broadband as a Catalyst of Economic Growth and Social Progress in Latin America and the Caribbean: A View from the Industry. Inter-American Development Bank, 2012. http://dx.doi.org/10.18235/0009027.

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This report is intended to encourage and reinforce the efforts of policymakers and industry stakeholders throughout the region to accelerate broadband deployment. The report has two primary aims. The first is to help identify public policy and regulatory issues that need to be addressed in order to eliminate the digital divide within and between LAC countries, and between the region and the world's leading broadband nations. The second is to highlight the range of options that policymakers have in achieving that goal by offering examples of specific solutions implemented in the region and elsewhere that have proved successful in accelerating broadband deployment and adoption.
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Parkins. L51743 Stress Corrosion Cracking of Pipelines in Contact with Near-Neutral pH Solutions. Pipeline Research Council International, Inc. (PRCI), 1995. http://dx.doi.org/10.55274/r0010322.

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While much has been learned about low pH stress corrosion cracking in the decade since it was recognized, a review of the published papers and reports since the last overview of the subject in 1992 indicates that there is still much to be understood about this matter. Most of the laboratory studies have involved dilute solutions based upon those found in the vicinity of cracks in operating lines, but the possible role of bacteria, for which there is supporting field evidence, has not received systematic study. The trans-granular service cracking has been reproduced in the laboratory, most readily when relatively high stresses and/or strains are applied to specimens, but there is still difficulty in reproducing cracking in the laboratory with stressing conditions similar to those on an operating pipeline. If meaningful modeling of low pH cracking is to be achieved, there is need for more data on crack initiation and the early stages of growth with stressing conditions no overly excessive by comparison with service conditions. There is also a need, related to modeling, of an understanding of the mechanistic aspects of cracking, since while it is known, not least from visible evidence of corrosion on the sides of cracks, that dissolution occurs within the crack enclave, there is indirect evidence that the ingress of hydrogen into the steel may be involved also in the overall crack growth process. If hydrogen is involved then existing models based upon high pH cracking, and involving a quantifiable dissolution mechanism, will not be directly applicable to the low pH problem.
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Watson, Mark, Martyn Wilmott, and Brian Erno. GRI-96-0452_2 Stress Corrosion Cracking Under Field Simulated Conditions II. Pipeline Research Council International, Inc. (PRCI), 1997. http://dx.doi.org/10.55274/r0011974.

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The pH of solutions found under disbonded polyethylene tape coatings in the field is generally in the range of 6.5 to 7.5. Electrochemically determining corrosion rates for pipeline steels exposed to neutral pH solutions in this pH range indicate that corrosion rates are too low to account for the observed crack growth rates from field excavation programs. This suggests that for the SCC process to be based on a simple dissolution mechanism then the pH at the crack tip would have to be lower than the bulk solution pH. A computer model was developed to determine solution chemistry changes within an SCC crack under anaerobic conditions as a function of time The numerical simulation model showed that the pH at a crack tip is lower by at least one pH unit than the trapped electrolyte outside the crack. A second thermodynamic model was used to show that under appropriate conditions dilute groundwater can be converted to a concentrated carl ornately bicarbonate solution. High temperatures were not required to concentrate on this solution. The concentration of this electrolyte under coal tar or asphalt coatings can occur by a cyclical process in which groundwater levels fluctuate and in tum influence the ability of cathodic protection to reach the steel surface. The high pH is generated by effective cathodic protection and the carbonate concentration is developed by absorption of CO2 from soil gases.
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zur Loye, Hans-Conrad. A Synthetic Strategy to Prepare New Complex Uranium- and Thorium-Containing Oxides: Predictive Solid State Synthesis of New Composition using Radius Ratio Rules and Materials Discovery based on Crystal Growth from High Temperature Solutions. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1476440.

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Katan, Jaacov, and Michael E. Stanghellini. Clinical (Major) and Subclinical (Minor) Root-Infecting Pathogens in Plant Growth Substrates, and Integrated Strategies for their Control. United States Department of Agriculture, 1993. http://dx.doi.org/10.32747/1993.7568089.bard.

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In intensive agriculture, harmful soilborne biotic agents, cause severe damage. These include both typical soilborne (clinical) major pathogens which destroy plants (e.g. Fusarium and Phytophthora pathogens), and subclinical ("minor") pathogens (e.g. Olpidium and Pythium). The latter cause growth retardation and yield decline. The objectives of this study were: (1) To study the behavior of clinical (major) and subclinical (minor) pathogens in plant growth substrate, with emphasis on zoosporic fungi, such as Pythium, Olipidium and Polymyxa. (2) To study the interaction between subclinical pathogens and plants, and those aspects of Pythium biology which are relevant to these systems. (3) To adopt a holistic-integrated approach for control that includes both eradicative and protective measures, based on a knowledge of the pathogens' biology. Zoospores were demonstrated as the primary, if not the sole propagule, responsible for pathogen spread in a recirculating hydroponic cultural system, as verified with P. aphanidermatum and Phytophthora capsici. P. aphanidermatum, in contrast to Phytophthora capsici, can also spread by hyphae from plant-to-plant. Synthetic surfactants, when added to the recirculating nutrient solutions provided 100% control of root rot of peppers by these fungi without any detrimental effects on plant growth or yield. A bacterium which produced a biosurfactant was proved as efficacious as synthetic surfactants in the control of zoosporic plant pathogens in the recirculating hydroponic cultural system. The biosurfactant was identified as a rhamnolipid. Olpidium and Polymyxa are widespread and were determined as subclinical pathogens since they cause growth retardation but no plant mortality. Pythium can induce both phenomena and is an occasional subclinical pathogen. Physiological and ultrastructural studies of the interaction between Olpidium and melon plants showed that this pathogen is not destructive but affects root hairs, respiration and plant nutrition. The infected roots constitute an amplified sink competing with the shoots and eventually leading to growth retardation. Space solarization, by solar heating of the greenhouse, is effective in the sanitation of the greenhouse from residual inoculum and should be used as a component in disease management, along with other strategies.
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Yue, Yunfeng. Making Urban Power Distribution Systems Climate-Resilient. Asian Development Bank, 2022. http://dx.doi.org/10.22617/wps220221.

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This working paper is designed to help ADB’s developing member countries build climate-resilient energy systems that can better support fast-growing cities in Asia and the Pacific. It shows how the COVID-19 pandemic underscored the urgent need for improved power networks and outlines why social inclusion should be central to energy system planning. Using actual examples from countries including India and Bangladesh, the study analyzes the risks and reliability of different energy solutions. Proposing a risk-based approach to energy system planning, it also considers the role that renewables and microgrids can play in building the climate-resilient infrastructure needed to support sustainable urban growth.
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Eberle, Caitlyn, Oscar Higuera Roa, Amy Newsom, and Samara Polwatta. Technical Report: Wandering elephants. United Nations University - Institute for Environment and Human Security (UNU-EHS), 2022. http://dx.doi.org/10.53324/iemf6334.

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From March 2020 to September 2021, a herd of approximately 15 Asian elephants left their home in Xishuangbanna National Nature Reserve. Along their journey, the herd broke into homes, damaged buildings and infrastructure, and destroyed crops, totaling estimated damage of over $1 million. The migration coincided with a severe drought in the region, indicating that the elephant’s habitat was likely unable to support them. As elephant populations have grown in southern China, habitat size and suitability has been reduced, increasing the likelihood of human-elephant conflict. As pressures such as climate change and population growth further push people and wildlife into shared spaces, management approaches must be tailored to the concept of coexistence. This technical background report for the 2021/2022 edition of the Interconnected Disaster Risks report analyses the root causes, drivers, impacts and potential solutions for the wandering elephants through a forensic analysis of academic literature, media articles and expert interviews.
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