Relevant bibliographies by topics / Dendritic materials

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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 'Dendritic materials'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 February 2022

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Journal articles on the topic "Dendritic materials"

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Nenchev, Bogdan, Joel Strickland, Karl Tassenberg, Samuel Perry, Simon Gill, and Hongbiao Dong. "Automatic Recognition of Dendritic Solidification Structures: DenMap." Journal of Imaging 6, no. 4 (2020): 19. http://dx.doi.org/10.3390/jimaging6040019.

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Dendrites are the predominant solidification structures in directionally solidified alloys and control the maximum length scale for segregation. The conventional industrial method for identification of dendrite cores and primary dendrite spacing is performed by time-consuming laborious manual measurement. In this work we developed a novel DenMap image processing and pattern recognition algorithm to identify dendritic cores. Systematic row scan with a specially selected template image over an image of interest is applied via a normalised cross-correlation algorithm. The DenMap algorithm locates the exact dendritic core position with a 98% accuracy for a batch of SEM images of typical as-cast CMSX-4® microstructures in under 90 s per image. Such accuracy is achieved due to a sequence of specially selected image pre-processing methods. Coupled with statistical analysis the model has the potential to gather large quantities of structural data accurately and rapidly, allowing for optimisation and quality control of industrial processes to improve mechanical and creep performance of materials.
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Takakura, Genki, Mukannan Arivanandhan, Kensaku Maeda, et al. "Dendritic Growth in Si1−xGex Melts." Crystals 11, no. 7 (2021): 761. http://dx.doi.org/10.3390/cryst11070761.

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We investigated the types of dendrites grown in Si1−xGex (0 < x < 1) melts, and also investigated the initiation of dendrite growth during unidirectional growth of Si1-xGex alloys. Si1−xGex (0 < x < 1) is a semiconductor alloy with a completely miscible-type binary phase diagram. Therefore, Si1−xGex alloys are promising for use as epitaxial substrates for electronic devices owing to the fact that their band gap and lattice constant can be tuned by selecting the proper composition, and also for thermoelectric applications at elevated temperatures. On the other hand, regarding the fundamentals of solidification, some phenomena during the solidification process have not been clarified completely. Dendrite growth is a well-known phenomenon, which appears during the solidification processes of various materials. However, the details of dendrite growth in Si1−xGex (0 < x < 1) melts have not yet been reported. We attempted to observe dendritic growth in Si1−xGex (0 < x < 1) melts over a wide range of composition by an in situ observation technique. It was found that twin-related dendrites appear in Si1−xGex (0 < x < 1) melts. It was also found that faceted dendrites can be grown in directional solidification before instability of the crystal/melt interface occurs, when a growing crystal contains parallel twin boundaries.
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Alexandrov, Dmitri V., Peter K. Galenko, and Lyubov V. Toropova. "Thermo-solutal and kinetic modes of stable dendritic growth with different symmetries of crystalline anisotropy in the presence of convection." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 376, no. 2113 (2018): 20170215. http://dx.doi.org/10.1098/rsta.2017.0215.

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Motivated by important applications in materials science and geophysics, we consider the steady-state growth of anisotropic needle-like dendrites in undercooled binary mixtures with a forced convective flow. We analyse the stable mode of dendritic evolution in the case of small anisotropies of growth kinetics and surface energy for arbitrary Péclet numbers and n -fold symmetry of dendritic crystals. On the basis of solvability and stability theories, we formulate a selection criterion giving a stable combination between dendrite tip diameter and tip velocity. A set of nonlinear equations consisting of the solvability criterion and undercooling balance is solved analytically for the tip velocity V and tip diameter ρ of dendrites with n -fold symmetry in the absence of convective flow. The case of convective heat and mass transfer mechanisms in a binary mixture occurring as a result of intensive flows in the liquid phase is detailed. A selection criterion that describes such solidification conditions is derived. The theory under consideration comprises previously considered theoretical approaches and results as limiting cases. This article is part of the theme issue ‘From atomistic interfaces to dendritic patterns’. This article is part of the theme issue ‘From atomistic interfaces to dendritic patterns’.
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Lee, Jae Wook, Seung Choul Han, Byoung-Ki Kim, et al. "Facile synthesis of dendritic-linear-dendritic materials by click chemistry." Macromolecular Research 17, no. 7 (2009): 499–505. http://dx.doi.org/10.1007/bf03218898.

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Hallensleben, Philipp, Felicitas Scholz, Pascal Thome, et al. "On Crystal Mosaicity in Single Crystal Ni-Based Superalloys." Crystals 9, no. 3 (2019): 149. http://dx.doi.org/10.3390/cryst9030149.

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In the present work, we investigate the evolution of mosaicity during seeded Bridgman processing of technical Ni-based single crystal superalloys (SXs). For this purpose, we combine solidification experiments performed at different withdrawal rates between 45 and 720 mm/h with advanced optical microscopy and quantitative image analysis. The results obtained in the present work suggest that crystal mosaicity represents an inherent feature of SXs, which is related to elementary stochastic processes which govern dendritic solidification. In SXs, mosaicity is related to two factors: inherited mosaicity of the seed crystal and dendrite deformation. Individual SXs have unique mosaicity fingerprints. Most crystals differ in this respect, even when they were produced using identical processing conditions. Small differences in the orientation spread of the seed crystals and small stochastic orientation deviations continuously accumulate during dendritic solidification. Direct evidence for dendrite bending in a seeded Bridgman growth process is provided. It was observed that continuous or sudden bending affects the growth directions of dendrites. We provide evidence which shows that some dendrites continuously bend by 1.7° over a solidification distance of 25 mm.
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Makarenko, Konstantin, Oleg Dubinin, and Igor Shishkovsky. "Analytical Evaluation of the Dendritic Structure Parameters and Crystallization Rate of Laser-Deposited Cu-Fe Functionally Graded Materials." Materials 13, no. 24 (2020): 5665. http://dx.doi.org/10.3390/ma13245665.

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The paper is devoted to the direct energy deposition (DED) of functionally graded materials (FGMs) created from stainless steel and aluminum bronze with 10% content of Al and 1% of Fe. The results of the microstructure analysis using scanning electronic microscopy (SEM) demonstrate the existence of a dendritic structure in the specimens. The crystallization rate of the gradient binary Cu-Fe system structures was investigated and calculated using the model of a fast-moving concentrated source with an ellipsoid crystallization front. The width of the secondary elements of the dendrites in the crystallized slab was numerically estimated as 0.2 nm at the center point of the circle heat spot, and the two types of dendrites were predicted in the specimen: the dendrites from 0.2 to approximately 50 nm and from approximately 0.1 to 0.3 μm in width of the secondary elements. The results were found to be in good accordance with the measured experimental values of the dendritic structure geometry parameters.
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Glicksman, M. E., and A. O. Lupulescu. "Dendritic crystal growth in pure materials." Journal of Crystal Growth 264, no. 4 (2004): 541–49. http://dx.doi.org/10.1016/j.jcrysgro.2003.12.034.

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LIU, JUN, and DONGFENG XUE. "A GENERAL TEMPLATE-FREE AND SURFACTANT-FREE SOLUTION-BASED ROUTE TOWARDS DENDRITIC TRANSITION-METAL SULFIDE NANOSTRUCTURES." Modern Physics Letters B 23, no. 31n32 (2009): 3777–83. http://dx.doi.org/10.1142/s021798490902182x.

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A template-free and surfactant-free hydrothermal method has been successfully developed to fabricate hierarchically dendritic metal sulfides ( PbS and CdS ). It has been found that the reaction temperature play important roles in the formation of well-defined sulfide dendritic nanostructures. A possible mechanism for the formation of present dendrites was proposed. The as-obtained transition-metal sulfide dendritic nanostructures may bring wide applications in optics, electricity, gas sensors, and other related fields. The synthetic route present in this work provides a new principle for the designing synthesis of dendritic metal sulfide nanomaterials and can be regarded as a general way to fabricate other metal chalcogenide materials.
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Xiao, J. Z., and H. W. Kui. "Solidification of undercooled molten Cu30Ni70." Journal of Materials Research 14, no. 5 (1999): 1771–81. http://dx.doi.org/10.1557/jmr.1999.0239.

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Recently, it was demonstrated that grain refinement in undercooled Cu30Ni70 is brought about by a remelting of those initially formed dendrites (termed novel dendrites) which are unstable against melting. Also, it was found that in the same transition regime, there is a sharp drop in the specific volume of the undercooled specimens. Before entering into the transition regime, the novel dendrites found in an undercooled specimen are arranged in a regular pattern and the microstructures consist of large dendrites. Voids are found mainly at the dendritic spacings of the large dendrites. On the other hand, near the upper end of the transition regime, the microstructures consist of equiaxed refined grains. Furthermore, each of these grains contains a novel dendrite. Voids have moved to the interdendritic or grain boundaries. Based on these observations, a solidification mechanism of undercooled molten Cu30Ni70 is proposed.
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Allen, Jeffrey B. "Phase-field simulations of isomorphous binary alloys subject to isothermal and directional solidification." Multidiscipline Modeling in Materials and Structures 17, no. 5 (2021): 955–73. http://dx.doi.org/10.1108/mmms-02-2021-0033.

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PurposeIn this work, with a goal to ultimately forward the advancement of additive manufacturing research, the author applies the Wheeler-Boettinger-McFadden model through a progressive series of increasingly complex solidification problems illustrating the evolution of both dendritic as well as columnar growth morphologies. For purposes of convenience, the author assumes idyllic solutions (i.e. the excess energies associated with mixing solid and liquid phases can be neglected).Design/methodology/approachIn this work, the author applied the phase-field model through a progressive series of increasingly complex solidification problems, illustrating the evolution of both dendritic as well as columnar growth morphologies. Beginning with a non-isothermal treatment of pure Ni, the author further examined the isothermal and directional solidification of Cu–Ni binary alloys.Findings(1) Consistent with previous simulation results, solidification simulations from each of the three cases revealed the presence of parabolic, dendrite tips evolving along directions of maximum interface energy. (2) For pure Ni simulations, changes in the anisotropy and noise magnitudes resulted in an increase of secondary dendritic branches and changes in the direction of propagation. The overall shape of the primary structure tended also to elongate with increased anisotropy. (3) For simulations of isothermal solidification of Ni–Cu binary alloys, the development of primary and secondary dendrite arm formation followed similar patterns associated with a pure substance. Calculations of dendrite tip velocity tended to increase monotonically with increasing anisotropy in accordance with previous research. (4) Simulations of directional solidification of Ni–Cu binary alloys with a linear temperature profile demonstrated the presence of cellular dendrites with relatively weak side-branching. The occurrence of solute trapping was also apparent between the primary dendrite columns. Dendrite tip velocities increased with increasing cooling rate.Originality/valueThis research, particularly the section devoted to directional solidification of binary alloys, describes a novel numerical framework and platform for the parametric analysis of various microstructural related quantities, including the effects due to changes in temperature gradient and cooling rate. Both the evolution of the phase and concentration are resolved.
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Dissertations / Theses on the topic "Dendritic materials"

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Ito, Fumiaki. "Development of Advanced Dendritic Materials." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487261.

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Electroactive organic materials have been making progress towards technological applications such as organic light-emitting diodes (OLEDs). In particular, use of electroluminescent dendritic materials in OLEDs show significant promise for a wide range of practical requirements because of their macromolecular structure being highly controllable with regard to both the chemical and physical properties. This thesis describes the development of synthetic approaches to novel phosphorescent dendrimers containing either 1,3,S-triazine or benzimidazole dendrons with the aim to develop materials in which the high electron affinity of the dendrons would be higher than the core and hence facilit~te electron transport through emissive layers in OLEDs. At an early stage, significant difficulties in the stability of triazine derivatives were identified, requiring an introduction of stabilising groups onto triazine rings. With analysis of reactivity and stability of 1,3,S-triazine derivatives, a promising structural modification of using carbzolyl moieties attached to triazine-branching units was discovered. It was found that triazine-based dendronised ligands could not be complexed to iridium(III) to give a single compound due to multiple co-ordination sites. The introduction of an amine linker solved this problem with the dendrons being added to the already fonned complex. 2-Ethylhexyloxy surface groupS were found to increase the solubility of the dendrimers in common organic solvents and also decreased intermolecular interactions of the emissive cores. Dendrimers with benzimidazolyl units in the dendrons were also prepared. that the redox processes were also dendron-dependent. Molecular orbital calculations quantum yield was dependent on the dendron type. Electrochemical analysis showed The photophysical properties of the dendrimers showed that the photoluminescence of the orbital energies and distribution were consistent with the observed properties. containing a light-emitting dendrimer comprised of the dendrimer 114 blended with Finally, OLED devices were fabricated using the soluble dendrimers. The highest external quantum efficiency of 5.4% at 100 cdlcm2 was observed for a bilayer device 4,4'_bis(N-carbazolyl)biphenyl (CBP) as a host.
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Kang, Jeonghee Peng Zhonghua. "Functional organic/inorganic hybrids and triphenylene-based dendritic materials." Diss., UMK access, 2007.

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Thesis (Ph. D.)--Dept. of Chemistry and School of Pharmacy. University of Missouri--Kansas City, 2007.<br>"A dissertation in chemistry and pharmaceutical science." Advisor: Zhonghua Peng. Typescript. Vita. Description based on contents viewed Apr. 22, 2008; title from "catalog record" of the print edition. Includes bibliographical references (leaves 160-176). Online version of the print edition.
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Antoni, Per. "Functional Dendritic Materials using Click Chemistry : Synthesis, Characterizations and Applications." Doctoral thesis, KTH, Fiber- och polymerteknik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4808.

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Förfrågan efter nya och mer avancerade applikationer är en pågående process vilket leder till en konstant utveckling av nya material. För att förstå relationen mellan en applikations egenskaper och dess sammansättning krävs full förståelse och kontroll över materialets uppbyggnad. En sådan kontroll över uppbyggnaden hos material hittas i en undergrupp till dendritiska polymerer som kallas dendrimerer. I den här doktorsavhandlingen belyses nya metoder för att framställa dendrimer med hjälp av selektiva kemiska reaktioner. Sådana selektiva reaktioner kan hittas inom konceptet klickkemi och har i detta arbete kombinerats med traditionell anhydrid- och karbodiimidmedierad kemi. Denna avhandling diskuterar en accelererad tillväxtmetod, dendrimerer med inre och yttre reaktiva grupper, simultana reaktioner och applikationer baserade på dessa dendritiska material. En accelererad tillväxtmetod har utvecklats baserad på AB2- och CD2-monomerer. Dessa monomerer tillåter tillväxt av dendrimerer utan att använda sig av skyddsgruppkemi eller aktivering av ändgrupper. Detta gjordes genom att kombinera kemoselektiviteten hos klickkemi tillsammans med traditionell syraklorid kopplingar. Dendrimerer med inre alkyn- eller azidfunktionalitet syntetiserades genom att använda AB2C-monomerer. Den dendritiska tillväxten skedde med hjälp av karbodiimidmedierad kemi. Monomererna som användes bär på en C-funktionalitet, alkyn eller azid, och på så sätt byggs får interiören i de syntetiserade dendrimeren en inneburen aktiv funktionell grupp. Ortogonaliteten hos klickkemi användes för att sammanfoga monomerer till en dendritisk struktur. Traditionell anhydridkemi- och klickemireaktioner utfördes samtidigt och på så sätt kunde dendritiska strukturer erhållas med färre antal uppreningssteg. En ljusemitterande dendrimer syntetiserades genom att koppla azidfunktionella dendroner till en alkynfunktionell cyclenkärna. Europiumjoner inkorporerades i kärnan varpå dendrimerens fotofysiska egenskaper analyserades. Mätningarna visade att den bildade triazolen hade en sensibiliserande effekt på europiumjonen. Termiska studier på några av de syntetiserade dendrimerer utfördes för att se om några av dem kunde fungera som templat vid framställning av isoporösa filmer.<br>The need for new improved materials in cutting edge applications is constantly inspiring researchers to developing novel advanced macromolecular structures. A research area within advanced and complex macromolecular structures is dendrimers and their synthesis. Dendrimers consist of highly dense and branched structures that have promising properties suitable for biomedical and electrical applications and as templating materials. Dendrimers provide full control over the structure and property relationship since they are synthesized with unprecedented control over each reaction step. In this doctoral thesis, new methodologies for dendrimer synthesis are based on the concept of click chemistry in combination with traditional chemical reactions for dendrimer synthesis. This thesis discusses an accelerated growth approach, dendrimers with internal functionality, concurrent reactions and their applications. An accelerated growth approach for dendrimers was developed based on AB2- and CD2-monomers. These allow dendritic growth without the use of activation or deprotection of the peripheral end-groups. This was achieved by combining the chemoselective nature of click chemistry and traditional acid chloride reactions. Dendrimers with internal azide/alkyne functionality were prepared by adding AB2C monomers to a multifunctional core. Dendritic growth was obtained by employing carbodiimide mediated chemistry. The monomers carry a pendant C-functionality (alkyne or azide) that remains available in the dendritic interior resulting in dendrimers with internal and peripheral functionalities. The orthogonal nature of click chemistry was utilized for the simultaneous assembly of monomers into dendritic structures. Traditional anhydride chemistry and click chemistry were carried out concurrently to obtain dendritic structures. This procedure allows synthesis of dendritic structures using fewer purification steps. Thermal analyses on selected dendrimers were carried out to verify their use as templates for the formation of honeycomb membranes. Additionally, a light emitting dendrimer was prepared by coupling of azide functional dendrons to an alkyne functional cyclen core. A Europium ion was incorporated into the dendrimer core, and photophysical measurements on the metal containing dendrimer revealed that the formed triazole linkage possesses a sensitizing effect.<br>QC 20100629
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Kernag, Casey Alexander. "Dendritic materials for optical applications: A. Synthesis and study of non-aggregating octasubstituted dendritic phthalocyanines for optical limiting applications B. Synthesis and study of two-photon dendritic dyes for biomedical imaging applications." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280715.

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This dissertation investigates the synthesis and analysis of new dendritic compounds for their utility as nonlinear optical materials. Two-photon absorbing dendritic dyes and octasubstituted dendritic phthalocyanines utilize the dendrons along the periphery in order to shield the central, "active" core from the external environment. An attempt to obtain phthalocyanine materials for use as optical limiters entailed the attachment of dendritic substituents through a hydroquinone spacer to phthalonitriles which were then cyclized to give the target phthalocyanines. Investigation of the aggregation properties of these compounds showed that as the generation of the dendritic substituent increased, the amount of aggregation decreased. This was seen both in thin films as well as in solution. However, as the dielectric constant of the solvent increased, aggregation of individual phthalocyanines in solution also increased. Substitution on the periphery of the dendron also had a role in how the phthalocyanine behaved in solution. The presence of t-butyl groups in the meta positions along the periphery of the dendrimer further decreased the amount of aggregation that occurred in solution. The addition of zinc to the core of the phthalocyanine led to further prevention of aggregation, again in both thin films and in solution. Fluorescence studies on these compounds had indicated the presence of an energy transfer mechanism between the dendron periphery and the phthalocyanine core. The dendritic zinc phthalocyanines also displayed small KSV values which suggest that the approach of quenching molecules to the core of the phthalocyanine is greatly hindered in solution by the dendritic periphery. In the development of a material for biomedical imaging, a strong effect was exhibited by the change in polarity of the solvent on the two-photon absorption (TPA) of bis-styrylbenzene (BSB) dyes which resulted in a loss of the fluorescence quantum yield (phif) as the polarity increased. Covalent attachment of different generations of a 4-carboxy terminated dendron to the dye resulted in a smaller decrease in the phif based upon the generation of the attached dendron. A study of the solvent effect on the dicyano-substituted BSB dendritic TPA dye indicated the presence of a possible hydrogen bonding interaction between the dendron and the dye at low pH. This interaction resulted in a strong decrease in the phif of the dye, a loss that was partially remedied by raising the pH to 12.
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Santini, Catherine Marie Bambenek 1973. "The synthesis and assembly of linear-dendritic rod diblock copolymers." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/29247.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2002.<br>Includes bibliographical references.<br>Dendrimers are three-dimensional, hyperbranched macromolecules that possess a uniform size and shape. Most dendrimers are spherical in shape; however, the shape of the dendrimer can be adjusting using the number and the position of the branching groups in the core. For example, dendritic rods have been prepared by assembling a dendron around each repeat unit of a linear polymer core, and hybrid-linear dendritic diblock copolymers have been prepared by attaching a dendron to the end functional group of a linear polymer. This linear block in the diblock copolymers also adds physical integrity and an assembly mechanism for arrangement of the polymer. Nonetheless, no one has combined the unique shape of the dendritic rod with that of the linear dendritic diblock copolymer. The objective of this research was to prepare a linear-dendritic rod diblock copolymer, and to examine its assembly behavior in solution, at the air/water interface, and in the bulk. These polymers consisted of a linear poly(ethylene oxide)-poly(ethylene imine) diblock copolymer around which poly(amido amine) branches were divergently synthesized. The dendritic branches were terminated with amine and ester groups, as well as alkyl chains of various lengths in order to "tune" the amphiphilic nature of the polymer.<br>(cont.) A fundamental change in the assembly behavior of the polymers was observed at generation 4.0 (eight end-groups). In solution, the hydrodynamic and viscometric radii were found to increase to a much greater extent than expected for the generation 4.0 and 4.5 polymers, consistent with a breakdown of the spherical approximation as the dendritic block extended into a rod-like shape. Similarly, at the air/water interface, the dendritic block of generation 4.0-alkyl terminated polymers all adopted a horizontal rod configuration, while the dendritic block of the lower generation polymers took on a random coil configuration, whose shape depended on the length of the terminal alkyl groups as well as the generation number of the dendritic block. Finally, in the bulk, direct observation of the generation 4.0-dodecyl terminated polymer with TEM indicated that the polymer was adopting a rod- or worm-like conformation, while the lower generation polymers only exhibited traditional diblock copolymer or polymer brush behavior.<br>by Catherine Marie Bambenek Santini.<br>Ph.D.
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Paul, Noel Michael. "Studies in dendritic secondary structural control." Connect to this title online, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1104365307.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xix, 343 p.; also includes graphics (some col.) Includes bibliographical references (p. 325-343).
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Shankar, Sucharita P. "Glycoprotein-mediated interactions of dendritic cells with surfaces of defined chemistries." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/29790.

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Thesis (Ph. D.)--Biomedical Engineering, Georgia Institute of Technology, 2007.<br>Committee Chair: Julia Babensee ; Committee Members: Barbara Boyan, John Brash, Andres Garcia, and Niren Murthy. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Song, Andrew M. Eng Massachusetts Institute of Technology. "Financial viability and technical evaluation of dendritic cell-carrying "vaccination nodes" for immunotherapy." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45353.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2008.<br>Includes bibliographical references (leaves 66-69).<br>Cancer immunotherapy attempts to stimulate the immune system to reject and destroy tumor cells. Despite the amount of ongoing intensive research to prevent cancer, tumor cells continue to evade immune responses. Currently, dendritic cell vaccines are in development, in which autologous antigen-loaded dendritic cells are injected back into the patient in order to generate an appropriate immune response. Improving upon this idea, members of the Irvine laboratory are in development of an injectable dendritic cell based formulation that gels in situ around the tumor site. In this way, immune cells (most notably T cells) can be recruited and become activated against specific tumor antigens, and (hopefully) kill tumor cells. Recent studies have shown the potential benefit of incorporation of cytokine interleukin-15 complexed with its soluble receptor interleukin-5R[alpha], which is discussed. Economic considerations are also discussed, including topics such as intellectual property, barriers to entry, initial markets and market drivers, and entry into the current supply chain considerations. A business strategy is outlined and evaluated.<br>by Andrew Song.<br>M.Eng.
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Eghtesadi, Seyed Ali. "SUPRAMOLECULAR ASSEMBLY OF DENDRITIC POLYIONS INTORESPONSIVE NANOSTRUCTURES." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1522527868518926.

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Hashemi, Mohammad. "Lattice Boltzmann Simulation of Natural Convection During Dendritic Growth." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1459444594.

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Books on the topic "Dendritic materials"

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Tomalia, Donald A. Dendrimers, dendrons, and dendritic polymers: Discovery, applications, and the future. Cambridge University Press, 2012.

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R, Dvornic Petar, and Owen Michael J. Dr, eds. Silicon-containing dendritic polymers. Springer, 2009.

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Dvornic, Petar R., and Michael J. Owen. Silicon-Containing Dendritic Polymers. Dvornic Petar Radivoj Owen Michael J, 2010.

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United States. National Aeronautics and Space Administration. and Westinghouse Electric Corporation. Advanced Energy Systems Division., eds. Process research of non-CZ silicon material: Quarterly report no. 5, April 1, 1985 - June 30, 1985. National Aeronautics and Space Administration, 1985.

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United States. National Aeronautics and Space Administration. and Westinghouse Electric Corporation. Advanced Energy Systems Division., eds. Process research of non-CZ silicon material: Quarterly report no. 5, April 1, 1985 - June 30, 1985. National Aeronautics and Space Administration, 1985.

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Book chapters on the topic "Dendritic materials"

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Thangadurai, T. Daniel, N. Manjubaashini, Sabu Thomas, and Hanna J. Maria. "Quantum Effects, CNTs, Fullerenes and Dendritic Structures." In Nanostructured Materials. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-26145-0_5.

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Brückner, Udo, Alexander Epishin, Thomas Link, Bernard Fedelich, and Pedro D. Portella. "Dendritic Stresses in Nickel-Base Superalloys." In Materials Science Forum. Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-969-5.497.

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Kaufmann, E., I. Stalder, and J. H. Bilgram. "Quantitative Studies on Dendritic Solidification." In Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy. Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607277.ch18.

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Alsehli, Mosa, and Mario Gauthier. "Dendritic Polymer Micelles for Drug Delivery." In Bioinspired Materials Science and Engineering. John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119390350.ch16.

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Schlüter, A. Dieter, Wilhelm Claussen, Birol Karakaya, and W. Lamer. "Dendritic Structures with Polyfunctional Cores." In Step-Growth Polymers for High-Performance Materials. American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0624.ch008.

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Hawker, Craig J., and Marcelo Piotti. "Dendritic Macromolecules: Hype or Unique Specialty Materials." In ACS Symposium Series. American Chemical Society, 2000. http://dx.doi.org/10.1021/bk-2000-0755.ch008.

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Gao, Chao, Deyue Yan, and Holger Frey. "Promising Dendritic Materials: An Introduction to Hyperbranched Polymers." In Hyperbranched Polymers. John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9780470929001.ch1.

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Hawker, Craig J., and Jean M. J. Fréchet. "Comparison of Linear, Hyperbranched, and Dendritic Macromolecules." In Step-Growth Polymers for High-Performance Materials. American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0624.ch007.

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Hawker, Craig J., and Wayne Devonport. "Design, Synthesis, and Properties of Dendritic Macromolecules." In Step-Growth Polymers for High-Performance Materials. American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0624.ch010.

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Glicksman, Martin E. "Capillary-Mediated Interface Energy Fields: Deterministic Dendritic Branching." In Microstructural Design of Advanced Engineering Materials. Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527652815.ch13.

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Conference papers on the topic "Dendritic materials"

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Yoon, Ikroh, and Seungwon Shin. "Numerical Simulation of Multiple Seeds Interaction During Three-Dimensional Dendritic Solidification With Fluid Flow." In ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASMEDC, 2009. http://dx.doi.org/10.1115/mnhmt2009-18129.

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Most material of engineering interest undergoes solidification process from liquid to solid state which governs the microstructure of materials. Identifying the growth characteristic of the microstructure during the solidification process is essential to determine the physical properties of final product. Numerical simulation can provide valuable information during solidification process since heat and mass transfer associated with micro-structural growth of dendrite is in greatly small scale which is almost impossible to obtain by experiments. In real situations, dendrite tends to grow from multiple seeds as well as with external fluid flow. Growth characteristics of the dendrites will be greatly influenced by both external fluid convection and interaction between dendrites. In this paper, three-dimensional numerical simulation of multiple dendritic growth during solidification process with melt fluid convection is presented. The high-order Level Contour Reconstruction Method (LCRM), a hybrid form of Front-Tracking and Level-Set, is used to track the moving liquid-solid interface explicitly and sharp interface technique has been used to implement correct phase changing boundary conditions on the moving interface. To get the indicator function and the interface curvature more efficiently and accurately for three-dimensional simulation, we have generated the distance function directly from the interface. The method is validated by comparing with other numerical technique and showed good agreements. Three-dimensional results showed clear difference compared to two-dimensional simulation on growth behavior, especially with multiple seeds.
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Dantras, E. "Dielectric study of dendritic macromolecules." In Eighth International Conference on Dielectric Materials, Measurements and Applications. IEE, 2000. http://dx.doi.org/10.1049/cp:20000486.

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Suh, H., P. Bharathi, J. Moore, and D. J. Beebe. "Dendritic materials as a dry release sacrificial layer." In Technical Digest. IEEE International MEMS 99 Conference. Twelfth IEEE International Conference on Micro Electro Mechanical Systems (Cat. No.99CH36291). IEEE, 1999. http://dx.doi.org/10.1109/memsys.1999.746808.

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Rusova, D. A., K. V. Zvonarev, and L. M. Martyushev. "Modeling dendritic structures on a water surface." In THE 2ND INTERNATIONAL CONFERENCE ON PHYSICAL INSTRUMENTATION AND ADVANCED MATERIALS 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0032874.

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Kang, Seung-Wan, Joo Yeon Kim, Ran Hee Kim, et al. "Multibranched and dendritic organic materials with high two-photon absorption activity." In European Symposium on Optics and Photonics for Defence and Security, edited by Anthony W. Vere, James G. Grote, and Francois Kajzar. SPIE, 2004. http://dx.doi.org/10.1117/12.582709.

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Jen, Alex K. Y., Hong Ma, Takafumi Sassa, et al. "Highly efficient and thermally stable organic/polymeric electro-optic materials by dendritic approach." In International Symposium on Optical Science and Technology, edited by Manfred Eich and Mark G. Kuzyk. SPIE, 2001. http://dx.doi.org/10.1117/12.449830.

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André, P., G. Cheng, A. Ruseckas, D. J. Cole-Hamilton, and I. D. W. Samuel. "Hybrid organic-inorganic POSS dendritic materials: photoluminescence chromophore control via confinement and steric hindrance." In SPIE NanoScience + Engineering, edited by Oliver L. A. Monti and Oleg V. Prezhdo. SPIE, 2009. http://dx.doi.org/10.1117/12.826220.

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Chowdhury, Md Mahmudur R., Mohd Aminul Hoque, Abdullah Fahim, Jeffrey C. Suhling, Sa'd Hamasha, and Pradeep Lall. "Microstructural Evolution in SAC305 and SAC-Bi Solders Subjected to Mechanical Cycling." In ASME 2018 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ipack2018-8414.

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Fatigue failure of solder joints is one of the most common methods by which electronic packages fail. Electronic assemblies usually must cope with a temperature varying environment. Due to the mismatches in coefficients of thermal expansion (CTEs) of the various assembly materials, the solder joints are subjected to cyclic thermal-mechanical loading during temperature cycling. The main focus of this work is to investigate the changes in microstructure that occur in SAC305 and SAC+Bi lead free solders subjected to mechanical cycling. In this paper, we report on results for the SAC+Bi solder commonly known as SAC_Q or CYCLOMAX. Uniaxial solder specimens were prepared in glass tubes, and the outside surfaces were polished. A nanoindenter was then used to mark fixed regions on the samples for subsequent microscopy evaluation. The samples were subjected to mechanical cycling, and the microstructures of the selected fixed regions were recorded after various durations of cycling using Scanning Electron Microscopy (SEM). Using the recorded images, it was observed that the cycling induced damage consisted primarily of small intergranular cracks forming along the subgrain boundaries within dendrites. These cracks continued to grow as the cycling continued, resulting in a weakening of the dendrite structure, and eventually to the formation of large transgranular cracks. The distribution and size of the intermetallic particles in the inter-dendritic regions were observed to remain essentially unchanged.
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Lu, Yili, C. Beckermann, and A. Karma. "Convection Effects in Three-Dimensional Dendritic Growth." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32838.

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A phase-field model is developed to simulate free dendritic growth coupled with fluid flow for a pure material in three dimensions. The preliminary results presented here illustrate the strong influence of convection on the three-dimensional (3D) dendrite growth morphology. The detailed knowledge of the flow and temperature fields in the melt around the dendrite from the simulations allows for a detailed understanding of the convection effects on dendritic growth.
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Nabavizadeh, Seyed Amin, Mohsen Eshraghi, and Sergio D. Felicelli. "Feasibility Study of Different Pseudopotential Multiphase Lattice Boltzmann Methods for Dendritic Solidification." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71019.

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The formation of porosity and bubbles during solidification in manufacturing processes like casting or welding of metals has a negative effect on the mechanical properties of the manufactured components. Numerical simulation of this problem is important since the direct observation of the interaction of bubbles with dendrites is limited by the opacity of metals. Therefore, developing a reliable numerical model is essential to predict the mechanical properties of materials after solidification. The pseudopotential multiphase model is a popular method for simulating multiphase flow using the lattice Boltzmann method. This model and its variations have been used to simulate a variety of problems successfully. However, the original pseudopotential model has some deficiencies, including large spurious current and restriction to model low density and viscosity ratios. Several schemes have been proposed to improve the pseudopotential multiphase model and overcome the limitations, including using a realistic equation of state, introducing a force with higher order of isotropy, introducing a middle-range repulsion force, and implementing the force similarly to the Exact Difference Method (EDM). The aim of this article is to investigate these various enhancements available for the pseudopotential multiphase model in order to come up with a reliable scheme to simulate motion and interaction of bubbles during dendritic solidification in binary alloys. The proposed model is validated against published literature.
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Reports on the topic "Dendritic materials"

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Moore, Jeffrey S. Dendritic Materials Systems. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada422098.

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Long, Chiang. Ultrafast Photoresponsive Starburst and Dendritic Fullerenyl Nanostructures for Broadband Nonlinear Photonic Material Applications. Defense Technical Information Center, 2014. http://dx.doi.org/10.21236/ada608881.

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