Conecte-se

Bibliografias temáticas / Metal crystals / Artigos de revistas

Siga este link para ver outros tipos de publicações sobre o tema: Metal crystals.

Artigos de revistas sobre o tema "Metal crystals"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 31 de julho de 2024

Crie uma referência precisa em APA, MLA, Chicago, Harvard, e outros estilos

Selecione um tipo de fonte:

Veja os 50 melhores artigos de revistas para estudos sobre o assunto "Metal crystals".

Ao lado de cada fonte na lista de referências, há um botão "Adicionar à bibliografia". Clique e geraremos automaticamente a citação bibliográfica do trabalho escolhido no estilo de citação de que você precisa: APA, MLA, Harvard, Chicago, Vancouver, etc.

Você também pode baixar o texto completo da publicação científica em formato .pdf e ler o resumo do trabalho online se estiver presente nos metadados.

Veja os artigos de revistas das mais diversas áreas científicas e compile uma bibliografia correta.

1

Shao, Lixiong, Jiang Diao, Wang Zhou, Tao Zhang, and Bing Xie. "Non-isothermal crystallization behavior of spinel crystals in FeO-SiO2-TiO2-V2O3-Cr2O3 slag." Metallurgical Research & Technology 116, no. 1 (December 18, 2018): 110. http://dx.doi.org/10.1051/metal/2018033.

Texto completo da fonte

Resumo:

The growth behaviour of spinel crystals in vanadium slag with high Cr2O3 content was investigated and clarified by statistical analyses based on the Crystal Size Distribution (CSD) theory. The results indicate that low cooling rate and Cr2O3 content benefit the growth of spinel crystals. The chromium spinel crystals firstly precipitated and then acted as the heterogeneous nuclei of vanadium and titanium spinel crystals. The growth mechanisms of the spinel crystals at the cooling rate of 5 K/min consist two regimes: firstly, nucleation control in the temperature range of 1873 to 1773 K, in whic

Estilos ABNT, Harvard, Vancouver, APA, etc.

2

Zhou, Wu Zong. "Mesoporous Crystals of Transition Metal Oxides." Solid State Phenomena 140 (October 2008): 37–46. http://dx.doi.org/10.4028/www.scientific.net/ssp.140.37.

Texto completo da fonte

Resumo:

Using mesoporous silicas as hard templates and facilitating crystal growth of transition metal oxides inside the pores, some mesoporous crystals can be produced after removing the templates. This paper gives a brief review of the research of mesoporous crystals of transition metal oxides in the last five years, including the technical development and potential applications of the new form of oxides.

Estilos ABNT, Harvard, Vancouver, APA, etc.

3

JIA, JIN-FENG, X. LIU, S. C. LI, J. Z. WANG, J. L. LI, H. LIU, M. H. PAN, et al. "ARTIFICIAL METAL NANOCLUSTER CRYSTALS." Modern Physics Letters B 16, no. 23n24 (October 20, 2002): 889–94. http://dx.doi.org/10.1142/s0217984902004408.

Texto completo da fonte

Resumo:

Artificial metal nanocluster crystals, (i.e. periodic lattices consisting of identical metal nanoclusters) were fabricated using a novel technique in which surface mediated magic clustering was used to achieve identical cluster size, while the Si(111)-7 × 7 surface was used as a template for ordering the clusters. The universality of this strategy was demonstrated by fabricating more than 10 different nanocluster arrays with different metals and alloys. The atomic structures, formation mechanism and stability of the nanoclusters were studied with in situ scanning tunneling microscopy combined

Estilos ABNT, Harvard, Vancouver, APA, etc.

4

Jiao, Benqi, Weizhong Han, Wen Zhang, Zhongwu Hu, and Jianfeng Li. "Preparation, Deformation Behavior and Irradiation Damage of Refractory Metal Single Crystals for Nuclear Applications: A Review." Materials 17, no. 14 (July 10, 2024): 3417. http://dx.doi.org/10.3390/ma17143417.

Texto completo da fonte

Resumo:

Refractory metal single crystals have been applied in key high-temperature structural components of advanced nuclear reactor power systems, due to their excellent high-temperature properties and outstanding compatibility with nuclear fuels. Although electron beam floating zone melting and plasma arc melting techniques can prepare large-size oriented refractory metals and their alloy single crystals, both have difficulty producing perfect defect-free single crystals because of the high-temperature gradient. The mechanical properties of refractory metal single crystals under different loads all

Estilos ABNT, Harvard, Vancouver, APA, etc.

5

KIRUBAVATHI, K., K. SELVARAJU, and S. KUMARARAMAN. "STUDIES ON GROWTH AND CHARACTERIZATION OF BIS THIOUREA LEAD CHLORIDE: A NOVEL NONLINEAR OPTICAL CRYSTAL." Journal of Nonlinear Optical Physics & Materials 18, no. 01 (March 2009): 153–59. http://dx.doi.org/10.1142/s0218863509004531.

Texto completo da fonte

Resumo:

Single crystals of the metal-organic nonlinear optical material bis thiourea lead chloride were grown from solution growth technique for the first time. The grown crystals were characterized by single crystal X-ray diffraction analysis to confirm the crystal structure. The presence of various functional groups and the coordination of metal ions to thiourea were confirmed by Fourier transform infrared analysis. UV-Vis. spectrum was recorded to study the optical transparency of the grown crystals. The second order nonlinear optical property of the grown crystal was examined by Kurtz powder techn

Estilos ABNT, Harvard, Vancouver, APA, etc.

6

Øien-Ødegaard, Sigurd, and Karl Lillerud. "Twinning in Zr-Based Metal-Organic Framework Crystals." Chemistry 2, no. 3 (September 16, 2020): 777–86. http://dx.doi.org/10.3390/chemistry2030050.

Texto completo da fonte

Resumo:

Ab initio structure determination of new metal-organic framework (MOF) compounds is generally done by single crystal X-ray diffraction, but this technique can yield incorrect crystal structures if crystal twinning is overlooked. Herein, the crystal structures of three Zirconium-based MOFs, that are especially prone to twinning, have been determined from twinned crystals. These twin laws (and others) could potentially occur in many MOFs or related network structures, and the methods and tools described herein to detect and treat twinning could be useful to resolve the structures of affected cry

Estilos ABNT, Harvard, Vancouver, APA, etc.

7

Sreenivasan, R. S., N. Kanagathara, G. Ezhamani, N. G. Renganathan, and G. Anbalagan. "Effect of Metal Dopant on Ninhydrin—Organic Nonlinear Optical Single Crystals." Journal of Spectroscopy 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/386024.

Texto completo da fonte

Resumo:

In the present work, metal (Cu2+)-substituted ninhydrin single crystals were grown by slow evaporation method. The grown crystals have been subjected to single crystal XRD, powder X-ray diffraction, FTIR, dielectric and SHG studies. Single crystal X-ray diffraction analysis reveals that the compound crystallizes in monoclinic system with noncentrosymmetric space group P21 with lattice parametersa=11.28 Å,b=5.98 Å,c=5.71 Å,α=90∘,β=98.57,γ=90∘, andV=381 (Å)3, which agrees very well with the reported value. The sharp and strong peaks in the powder X-ray diffraction pattern confirm the good crysta

Estilos ABNT, Harvard, Vancouver, APA, etc.

8

Hayashi, Tomohiro, Hidemoto Shiga, Masayoshi Sadakata, Tatsuya Okubo, and Masahiro Yoshimura. "Hydrothermal growth of millimeter-sized aluminosilicate sodalite single crystals in noble metal capsules." Journal of Materials Research 13, no. 4 (April 1998): 891–95. http://dx.doi.org/10.1557/jmr.1998.0120.

Texto completo da fonte

Resumo:

Aluminosilicate sodalite Na8[SiAlO4]6Cl2 single crystals are synthesized by hydrothermal processing at 873–973 K and 100–150 MPa in noble metal capsules to avoid contamination. The starting material is aluminosilicate gel, and spontaneous nucleation followed by its growth takes place. The largest size of the single crystals obtained is 1 mm across. Longer aging and heating result in larger single crystals. It is also found that the aluminum source in the synthesis gel and the element used in the noble metal capsules influence the single crystal growth. Judging from x-ray diffraction (XRD) (pow

Estilos ABNT, Harvard, Vancouver, APA, etc.

9

Kobayashi, Jun, Keisuke Shimura, Keisuke Mikurube, Saki Otobe, Takashi Matsumoto, Eri Ishikawa, Haruo Naruke, and Takeru Ito. "Polyoxomolybdate Layered Crystals Constructed from a Heterocyclic Surfactant: Syntheses, Pseudopolymorphism and Introduction of Metal Cations." Materials 15, no. 7 (March 25, 2022): 2429. http://dx.doi.org/10.3390/ma15072429.

Texto completo da fonte

Resumo:

Crystals with layered structures are crucial for the construction of functional materials exhibiting intercalation, ionic conductivity, or emission properties. Polyoxometalate crystals hybridized with surfactant cations have distinct layered packings due to the surfactants which can form lamellar structures. Introducing metal cations into such polyoxometalate-surfactant hybrid crystals is significant for the addition of specific functions. Here, polyoxomolybdate–surfactant hybrid crystals were synthesized as single crystals, and unambiguously characterized by X-ray structure analyses. Octamoly

Estilos ABNT, Harvard, Vancouver, APA, etc.

10

Wade, Colin, Nicolas Barrière, Lorraine Hanlon, Pierre Bastie, Gerard Fitzpatrick, Michael Jentschel, Gilles Roudil, and Peter Von Ballmoos. "Laue diffraction behaviour in silver mosaic crystals at several gamma-ray energies and orientations." Journal of Applied Crystallography 49, no. 2 (March 24, 2016): 606–15. http://dx.doi.org/10.1107/s1600576716002880.

Texto completo da fonte

Resumo:

The Laue lens is an emerging technology that uses crystal diffraction to concentrate gamma-rays. The Darwin model describes diffraction in mosaic crystals at high energies (>50 keV) and is the basis for assessing the throughput of a Laue lens. While the Darwin model has been used successfully to describe binary alloys, it has shown inconsistencies when applied to diffraction with pure-metal crystals. This paper presents a systematic study of diffraction in pure-metal silver mosaic crystals and the performance of the Darwin model when applied to the data. Two cut silver crystals were tested

Estilos ABNT, Harvard, Vancouver, APA, etc.

11

Chen, Chen, Xiao-Tong He, Dan-Li Hong, Jing-Wen Wang, Yang-Hui Luo, and Bai-Wang Sun. "Tuning the crystal structures of metal-tetraphenylporphines via a magnetic field." New Journal of Chemistry 42, no. 15 (2018): 12570–75. http://dx.doi.org/10.1039/c8nj01882k.

Texto completo da fonte

Resumo:

In this work, two new single crystals of copper-tetraphenylporphine (Cu-TPP) (crystals 2 and 3), which were induced by external magnetic fields with strengths of 0.5 and 0.8 T, respectively, have been prepared and characterized by single-crystal X-ray diffraction and Hirshfeld surface analysis.

Estilos ABNT, Harvard, Vancouver, APA, etc.

12

Radka, Christopher D., Lawrence J. DeLucas, Landon S. Wilson, Matthew B. Lawrenz, Robert D. Perry, and Stephen G. Aller. "Crystal structure ofYersinia pestisvirulence factor YfeA reveals two polyspecific metal-binding sites." Acta Crystallographica Section D Structural Biology 73, no. 7 (June 30, 2017): 557–72. http://dx.doi.org/10.1107/s2059798317006349.

Texto completo da fonte

Resumo:

Gram-negative bacteria use siderophores, outer membrane receptors, inner membrane transporters and substrate-binding proteins (SBPs) to transport transition metals through the periplasm. The SBPs share a similar protein fold that has undergone significant structural evolution to communicate with a variety of differentially regulated transporters in the cell. InYersinia pestis, the causative agent of plague, YfeA (YPO2439, y1897), an SBP, is important for full virulence during mammalian infection. To better understand the role of YfeA in infection, crystal structures were determined under sever

Estilos ABNT, Harvard, Vancouver, APA, etc.

13

Chen, Xin, Zhi-Yuan Yao, Chen Xue, Zhu-Xi Yang, Jian-Lan Liu, and Xiao-Ming Ren. "Novel isomorphism of two hexagonal non-centrosymmetric hybrid crystals of M(en)3Ag2I4 (M = transition metal Mn2+ or main-group metal Mg2+; en = ethylenediamine)." CrystEngComm 20, no. 3 (2018): 356–61. http://dx.doi.org/10.1039/c7ce02005h.

Texto completo da fonte

Resumo:

For the first time, a main-group metal complex is used as a template for the formation of hybrid crystal structures and isomorphic hybrid crystals are obtained using transition and main-group metal complexes.

Estilos ABNT, Harvard, Vancouver, APA, etc.

14

Yu, Shimo, Xiang Wang, Xiuling Jiao, Cheng Li, and Dairong Chen. "Polyhedral metal–organic framework monolayer colloidal crystals with sharpened and crystal facet-dependent selectivity for organic vapor sensing." Journal of Materials Chemistry C 9, no. 16 (2021): 5379–86. http://dx.doi.org/10.1039/d1tc00810b.

Texto completo da fonte

Resumo:

Polyhedral metal–organic framework monolayer colloidal crystals demonstrate sharpened and crystal facet-dependent selectivity for organic vapors by eliminating grain boundaries and randomly exposed crystal surfaces.

Estilos ABNT, Harvard, Vancouver, APA, etc.

15

Daeges, J., H. Gleiter, and J. H. Perepezko. "Superheating of metal crystals." Physics Letters A 119, no. 2 (December 1986): 79–82. http://dx.doi.org/10.1016/0375-9601(86)90418-4.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

16

Krasavin, V. V., and A. V. Krasavin. "Study of the elastic properties of hexagonal metal single crystals." Industrial laboratory. Diagnostics of materials 85, no. 9 (September 28, 2019): 29–35. http://dx.doi.org/10.26896/1028-6861-2019-85-9-29-35.

Texto completo da fonte

Resumo:

Hexagonal metals (e.g., Be, Zr, Ti) are widely used in the nuclear industry, space and aircraft engineering (in manufacturing of the structural elements operating under extreme conditions). A promising way to improve the quality of products made of them is to improve the physical properties of materials using the natural anisotropy of metal single crystals. The results of studying anisotropy and a comparative analysis of the technical characteristics of the elastic properties of single crystals of hexagonal metals are presented. The equations of the elastic compliance matrix components are der

Estilos ABNT, Harvard, Vancouver, APA, etc.

17

D. S., Christy, Sahaya Shajan X., and Mahadevan C. K. "Study of Physico-Chemical Properties and Growth Dimension Augmentation of Barium Succinate Single Crystals Grown by Slow Evaporation Technique." Journal of Physical Science 33, no. 1 (April 25, 2022): 29–49. http://dx.doi.org/10.21315/jps2022.33.1.3.

Texto completo da fonte

Resumo:

Slow evaporation method was adopted to grow barium succinate (BS) single crystals for the first time and diamond shape crystals were successfully synthesised with dimension 14 mm3 × 17 mm3 × 4 mm3. Single crystal x-ray diffraction studies show that the crystal system is monoclinic. Powder x-ray diffraction studies confirmed the crystallinity of the grown BS crystal. From energy dispersive x-ray spectroscopy (EDS) analysis the presence of barium metal was confirmed. The functional group of the BS crystal was confirmed from fourier transform infrared (FTIR) spectrum. The crystals were found to b

Estilos ABNT, Harvard, Vancouver, APA, etc.

18

Horichok, Ihor, Myroslava Shevchuk, Taras Parashchuk, and Mar’jan Galushchak. "INTRINSIC POINT DEFECTS OF SAMARIUM MONOSULPHIDE CRYSTALS IN METAL PHASE." Chemistry & Chemical Technology 11, no. 3 (August 28, 2017): 319–26. http://dx.doi.org/10.23939/chcht11.03.319.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

19

Jackson, Michael R., and Thomas L. Selby. "Crystallization, optimization and preliminary X-ray characterization of a metal-dependent PI-PLC fromStreptomyces antibioticus." Acta Crystallographica Section F Structural Biology and Crystallization Communications 68, no. 11 (October 30, 2012): 1378–86. http://dx.doi.org/10.1107/s1744309112041371.

Texto completo da fonte

Resumo:

A recombinant metal-dependent phosphatidylinositol-specific phospholipase C (PI-PLC) fromStreptomyces antibioticushas been crystallized by the hanging-drop method with and without heavy metals. The native crystals belonged to the orthorhombic space groupP222, with unit-cell parametersa= 41.26,b= 51.86,c = 154.78 Å. The X-ray diffraction results showed significant differences in the crystal quality of samples soaked with heavy atoms. Additionally, drop pinning, which increases the surface area of the drops, was also used to improve crystal growth and quality. The combination of heavy-metal soak

Estilos ABNT, Harvard, Vancouver, APA, etc.

20

Kobayashi, Hiroyuki, Yoshinori Ikumura, Chang-Hyoun Lee та Akiko Hori. "Co-Crystallization and Structural Studies of Benzophenone Recognized by Positively Shifted ESPs of Perfluorinated β-Diketonate Complexes (M = Cu, Pd, Pt)". Crystals 14, № 7 (27 червня 2024): 593. http://dx.doi.org/10.3390/cryst14070593.

Texto completo da fonte

Resumo:

Benzophenone was encapsulated in molecular crystals of fully fluorinated coordination complexes, [ML2] [1, M = Cu2+ and Pd2+, L = bis(pentafluorobenzoyl)-methanido−], forming a unique chiral co-crystal with a ratio of [ML2]:benzophenone = 2:3, while no encapsulation was observed in the corresponding non-fluorinated complexes [M(dbm)2] (dbm = dibenzoylmethanido−). Notable π-hole···π and metal(M)···π interactions were detected between the complex and the adapted orientation of benzophenone in the co-crystals. Analyses from crystal structures and thermogravimetric (TG) results indicated that the

Estilos ABNT, Harvard, Vancouver, APA, etc.

21

Vasilyeva, Natalie, Marina Grigorieva, Alexander Antipin, Natalia Sorokina, and Alexey Voloshin. "Growth and structure of K2CoxNi(1-x)(SO4)2·6H2O mixed single crystals." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C1029. http://dx.doi.org/10.1107/s2053273314089700.

Texto completo da fonte

Resumo:

To date, crystals of Tutton salts with the general formula (M+)2M2+(SO4)2*6N2O (where M+- alkali metal or ammonium, M2+ - bivalent metal - Co2+, Ni2+) are used as a materials for ultraviolet (UV) filters. Only in recent year effort of ternary crystal growth has been taken. The main problem of mixed crystal growth from liquid solution is high level of the crystal inhomogeneity, which leads to generation of the elastic stress, inclusion trapping and micro- and macrocrack formation in the bulk crystal. For the first time the optically homogeneous mixed K2CoxNi(1 – x)(SO4)2 · 6H2O (KCNSH) large si

Estilos ABNT, Harvard, Vancouver, APA, etc.

22

Mulijanto, Caroline Evania, Hong Sheng Quah, Geok Kheng Tan, Bruno Donnadieu, and Jagadese J. Vittal. "Curved crystal morphology, photoreactivity and photosalient behaviour of mononuclear Zn(II) complexes." IUCrJ 4, no. 1 (January 1, 2017): 65–71. http://dx.doi.org/10.1107/s2052252516019072.

Texto completo da fonte

Resumo:

A dramatic effect of crystal morphology, photoreactivity and photosalient property is observed in a zinc(II) complex due to solvent effects and fluorine substitution at the backbone of the ligand. Of the two crystal forms with a 3-fluoro derivative, one yielded a curved morphology of single crystals and the second form shows photoreactivity in the solid state, whereas crystals of the 2-fluoro derivative pop during the [2 + 2] photocycloaddition reaction. This is the first report documenting curved single crystals of metal complexes obtained naturally during crystallization, although such bent

Estilos ABNT, Harvard, Vancouver, APA, etc.

23

Choudhury, Tanushree H., Xiaotian Zhang, Zakaria Y. Al Balushi, Mikhail Chubarov, and Joan M. Redwing. "Epitaxial Growth of Two-Dimensional Layered Transition Metal Dichalcogenides." Annual Review of Materials Research 50, no. 1 (July 1, 2020): 155–77. http://dx.doi.org/10.1146/annurev-matsci-090519-113456.

Texto completo da fonte

Resumo:

Transition metal dichalcogenide (TMD) monolayers and heterostructures have emerged as a compelling class of materials with transformative properties that may be harnessed for novel device technologies. These materials are commonly fabricated by exfoliation of flakes from bulk crystals, but wafer-scale epitaxy of single-crystal films is required to advance the field. This article reviews the fundamental aspects of epitaxial growth of van der Waals–bonded crystals specific to TMD films. The structural and electronic properties of TMD crystals are initially described along with sources and method

Estilos ABNT, Harvard, Vancouver, APA, etc.

24

Chen, Li, and Yanan Wang. "Doping of metal into transition metal dichalcogenides PdTe₂." Journal of Physics: Conference Series 2713, no. 1 (February 1, 2024): 012025. http://dx.doi.org/10.1088/1742-6596/2713/1/012025.

Texto completo da fonte

Resumo:

Abstract Rh-doped PdTe2 single crystals were successfully prepared using the solid-state reaction. The change of lattice constants and T c with increasing Rh content were studied and investigated. It was found that there is a very slight increase of lattice constant c with increasing Rh content. The values of T c were above 2 K when Rh content is equal to 0.05 and 0.1. The largest T c was~2.7 K for Rh0.05PdTe2 single crystal. T c does not increase with increasing x from 0.05 to 0.1. M-T measurement of Rh0.05PdTe2 single crystal with applied magnetic field H perpendicular to the c axis and alon

Estilos ABNT, Harvard, Vancouver, APA, etc.

25

Kousaka, Yusuke, Satoshi Iwasaki, Taisei Sayo, Hiroshi Tanida, Takeshi Matsumura, Shingo Araki, Jun Akimitsu, and Yoshihiko Togawa. "Chirality-controlled enantiopure crystal growth of a transition metal monosilicide by a floating zone method." Japanese Journal of Applied Physics 61, no. 4 (March 16, 2022): 045501. http://dx.doi.org/10.35848/1347-4065/ac4e2f.

Texto completo da fonte

Resumo:

Abstract We performed a crystal growth to obtain chirality-controlled enantiopure crystals using a laser-diode-heated floating zone (LDFZ) method with a composition-gradient feed rod. It has been argued that the crystal handedness of TSi (T : transition metal) is fixed depending on T in the case of the ones grown by the conventional methods. We found that right-handed single crystals of CoSi and MnSi were grown from the composition-gradient feed rods that consist of FeSi–CoSi and FeSi–MnSi, respectively. The obtained CoSi and MnSi crystals inherit the chirality from the seed part of FeSi, whic

Estilos ABNT, Harvard, Vancouver, APA, etc.

26

Yurov, V. M. "ANISOTROPY OF THE SURFACE OF CUBIC BODY-CENTERED CRYSTAL LATTICES." Eurasian Physical Technical Journal 18, no. 1 (March 30, 2021): 9–15. http://dx.doi.org/10.31489/2021no1/9-15.

Texto completo da fonte

Resumo:

In the work of Shebzukhova and Arefieva, by the method of electronic-statistical calculation of the anisotropy of the surface energy of metals, a method for estimating the work function of electrons from a metal was determined. The surface energy and electron work function of four main faces of cadmium and zinc crystals and five faces of mercury are estimated. In the work of Bokarev, the anisotropy of the surface energy of single crystals was calculated from the model of coordination melting of crystals. Based on experimental studies and theoretical calculations, it is shown that the model of

Estilos ABNT, Harvard, Vancouver, APA, etc.

27

Makarov, Yu N., D. Litvin, A. Vasiliev, and S. Nagalyuk. "Sublimation Growth of 4 and 6 Inch 4H-SiC Low Defect Bulk Crystals in Ta (TaC) Crucibles." Materials Science Forum 858 (May 2016): 101–4. http://dx.doi.org/10.4028/www.scientific.net/msf.858.101.

Texto completo da fonte

Resumo:

Recently, the wide bandgap semiconductors, especially silicon carbide (SiC), have become more important due to the unique electrical and thermophysical properties that make them applicable to a variety of electronic devices (Schottky and PiN diodes, JFETs, MOSFETs, etc.). For these applications, the crystals need to be manufactured with highest possible quality, both structural and chemical, at reduced cost. This requirement places rather extreme constraints on the crystal growth as the simultaneous goals of high quality and low cost are generally incompatible.Refractory metal carbide technolo

Estilos ABNT, Harvard, Vancouver, APA, etc.

28

Chen, Lung-Chien, Kuan-Lin Lee, Kun-Yi Lee, Yi-Wen Huang, and Ray-Ming Lin. "Study of Metal–Semiconductor–Metal CH3NH3PbBr3 Perovskite Photodetectors Prepared by Inverse Temperature Crystallization Method." Sensors 20, no. 1 (January 5, 2020): 297. http://dx.doi.org/10.3390/s20010297.

Texto completo da fonte

Resumo:

Numerous studies have addressed the use of perovskite materials for fabricating a wide range of optoelectronic devices. This study employs the deposition of an electron transport layer of C60 and an Ag electrode on CH3NH3PbBr3 perovskite crystals to complete a photodetector structure, which exhibits a metal–semiconductor–metal (MSM) type structure. First, CH3NH3PbBr3 perovskite crystals were grown by inverse temperature crystallization (ITC) in a pre-heated circulator oven. This oven was able to supply uniform heat for facilitating the growth of high-quality and large-area crystals. Second, th

Estilos ABNT, Harvard, Vancouver, APA, etc.

29

Yeo, Hyun Ku, Jina Kang, Young Woo Park, Jung-Suk Sung, and Jae Young Lee. "Crystallization and preliminary X-ray diffraction analysis of the metalloregulatory protein DtxR fromThermoplasma acidophilum." Acta Crystallographica Section F Structural Biology and Crystallization Communications 68, no. 2 (January 26, 2012): 172–74. http://dx.doi.org/10.1107/s1744309111051700.

Texto completo da fonte

Resumo:

The diphtheria toxin repressor (DtxR) is a metal-ion-dependent transcriptional regulator which regulates genes encoding proteins involved in metal-ion uptake to maintain metal-ion homeostasis. DtxR fromThermoplasma acidophilumwas cloned and overexpressed inEscherichia coli. Crystals of N-terminally His-tagged DtxR were obtained by hanging-drop vapour diffusion and diffracted to 1.8 Å resolution. DtxR was crystallized at 296 K using polyethylene glycol 4000 as a precipitant. The crystals belonged to the orthorhombic space groupP21212, with unit-cell parametersa= 61.14,b= 84.61,c= 46.91 Å, α = β

Estilos ABNT, Harvard, Vancouver, APA, etc.

30

Camara-Artigas, Ana, Marina Plaza-Garrido, Sergio Martinez-Rodriguez, and Julio Bacarizo. "New crystal form of human ubiquitin in the presence of magnesium." Acta Crystallographica Section F Structural Biology Communications 72, no. 1 (January 1, 2016): 29–35. http://dx.doi.org/10.1107/s2053230x15023390.

Texto completo da fonte

Resumo:

Ubiquitin is a small globular protein that has a considerable number of lysine residues on its surface. This results in a high surface entropy that precludes the formation of crystal-packing interactions. To date, only a few structures of the native form of ubiquitin have been solved, and most of the crystals that led to these structures were obtained in the presence of different divalent metal cations. In this work, a new crystallographic structure of human ubiquitin solved from crystals grown in the presence of magnesium is presented. The crystals belonged to a triclinic space group, with un

Estilos ABNT, Harvard, Vancouver, APA, etc.

31

Apkarian, R. P., and M. D. Gutekunst. "High-Resolution Topographic Imaging of Enamel Crystal Surfaces." Proceedings, annual meeting, Electron Microscopy Society of America 46 (1988): 188–89. http://dx.doi.org/10.1017/s0424820100103024.

Texto completo da fonte

Resumo:

Previous interpretations of enamel crystal morphology have been handicapped by preparation techniques and the understanding of enamel crystals was derived from TEM and conventional SEM studies looking into lesion formation in enamel. Early studies focused on the demineralization and effects of mineralization on enamel structure. Enamel crystals were previously described as flattened hexagonal structures 100 μm long and 35-40 nm in diameter using conventional SEM and 47.3 nm in diameter using TEM. A methodology has been developed and employed in order to accurately image hydroxyapatite crystals

Estilos ABNT, Harvard, Vancouver, APA, etc.

32

Sano, Daisuke, and Soshu Kirihara. "Fabrication of Metal Photonic Crystals with Graded Lattice Spacing by Using Micro-Stereolithography." Materials Science Forum 631-632 (October 2009): 287–92. http://dx.doi.org/10.4028/www.scientific.net/msf.631-632.287.

Texto completo da fonte

Resumo:

We designed micro-scale photonic crystal with or without graded lattice spacing composed of copper to control Terahertz (THz) waves. Designed structures were fabricated by using micro-stereolithography. By proper dewaxing and sintering process, pure copper photonic crystals were obtained. Transmission properties of THz waves propagating through the photonic crystals were measured by THz time-domain spectroscopy. Measured results showed good agreements with the simulated results.

Estilos ABNT, Harvard, Vancouver, APA, etc.

33

Suponitsky, Kyrill Yu, Ivan V. Fedyanin, Valentina A. Karnoukhova, Vladimir A. Zalomlenkov, Alexander A. Gidaspov, Vladimir V. Bakharev, and Aleksei B. Sheremetev. "Energetic Co-Crystal of a Primary Metal-Free Explosive with BTF. Ideal Pair for Co-Crystallization." Molecules 26, no. 24 (December 9, 2021): 7452. http://dx.doi.org/10.3390/molecules26247452.

Texto completo da fonte

Resumo:

Co-crystallization is an elegant technique to tune the physical properties of crystalline solids. In the field of energetic materials, co-crystallization is currently playing an important role in the engineering of crystals with improved performance. Here, based on an analysis of the structural features of the green primary explosive, tetramethylammonium salt of 7-oxo-5-(trinitromethyl)-4,5,6,7-tetrahydrotetrazolo[1,5-a][1,3,5]triazin-5-ide (1), a co-former such as the powerful secondary explosive, benzotrifuroxan (BTF, 2), has been proposed to improve it. Compared to the original 1, its co-cr

Estilos ABNT, Harvard, Vancouver, APA, etc.

34

Krause, Simon, Volodymyr Bon, Hongchu Du, Rafal E. Dunin-Borkowski, Ulrich Stoeck, Irena Senkovska, and Stefan Kaskel. "The impact of crystal size and temperature on the adsorption-induced flexibility of the Zr-based metal–organic framework DUT-98." Beilstein Journal of Nanotechnology 10 (August 20, 2019): 1737–44. http://dx.doi.org/10.3762/bjnano.10.169.

Texto completo da fonte

Resumo:

In this contribution we analyze the influence of adsorption cycling, crystal size, and temperature on the switching behavior of the flexible Zr-based metal–organic framework DUT-98. We observe a shift in the gate-opening pressure upon cycling of adsorption experiments for micrometer-sized crystals and assign this to a fragmentation of the crystals. In a series of samples, the average crystal size of DUT-98 crystals was varied from 120 µm to 50 nm and the obtained solids were characterized by X-ray diffraction, infrared spectroscopy, as well as scanning and transmission electron microscopy. We

Estilos ABNT, Harvard, Vancouver, APA, etc.

35

Abrahams, Brendan F., Nicholas J. FitzGerald, Timothy A. Hudson, Richard Robson, and Richard D. Shalders. "Metal Exchange within a Body-Centred Cubic Hydrogen-Bonded Network." Australian Journal of Chemistry 60, no. 1 (2007): 68. http://dx.doi.org/10.1071/ch06334.

Texto completo da fonte

Resumo:

A hydrogen bonded network of composition Zn8(C4O7)4(H2O)12·hydrate was shown to undergo a single crystal to single crystal exchange process when crystals are immersed in a concentrated aqueous solution of Ni(ii). In the exchange process, half of the zinc(ii) centres are replaced by nickel(ii) centres. The process of metal ion exchange was monitored using IR spectroscopy. Crystal structures of the transformed crystal and the product generated from a direct synthetic approach are presented.

Estilos ABNT, Harvard, Vancouver, APA, etc.

36

Lillo, Vanesa, and José Ramón Galán-Mascarós. "Transition metal complexes with oligopeptides: single crystals and crystal structures." Dalton Trans. 43, no. 26 (2014): 9821–33. http://dx.doi.org/10.1039/c4dt00650j.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

37

Tian, Yu, A. Lysyakov, Haoyu Wang, and Haoyu Xie. "Development of Wide Bandgap One-dimensional MOF/TiO2 Photonic Crystal and Its Gas-sensing Properties." Bulletin of Science and Practice 10, no. 6 (June 14, 2024): 306–16. http://dx.doi.org/10.33619/2414-2948/103/34.

Texto completo da fonte

Resumo:

Metal-organic framework (MOFs) materials are a type of coordination polymer that have seen significant breakthroughs in material science over the past decade. Because of their high specific surface area and porosity, they are widely used for gas adsorption, storage, and separation. Additionally, their structural tunability allows for a wide variety of MOFs, with more remarkable properties yet to be discovered as research continues. When MOFs are applied in photonic crystals, adjustments to their structure enable them to act as specific gas-sensitive materials, causing shifts in the photonic cr

Estilos ABNT, Harvard, Vancouver, APA, etc.

38

Yang, Xue, Michel Giorgi, Hakim Karoui, Didier Gigmes, Virginie Hornebecq, Olivier Ouari, Anthony Kermagoret, and David Bardelang. "A single-crystal-to-single-crystal transformation affording photochromic 3D MORF crystals." Chemical Communications 55, no. 92 (2019): 13824–27. http://dx.doi.org/10.1039/c9cc07121k.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

39

Liu, Chong, and Nathaniel L. Rosi. "Ternary gradient metal–organic frameworks." Faraday Discussions 201 (2017): 163–74. http://dx.doi.org/10.1039/c7fd00045f.

Texto completo da fonte

Resumo:

Gradient MOFs contain directional gradients of either structure or functionality. We have successfully prepared two ternary gradient MOFs based on bMOF-100 analogues, namely bMOF-100/102/106 and bMOF-110/100/102, via cascade ligand exchange reactions. The cubic unit cell parameter discrepancy within an individual ternary gradient MOF crystal is as large as ∼1 nm, demonstrating the impressive compatibility and flexibility of the component MOF materials. Because of the presence of a continuum of unit cells, the pore diameters within individual crystals also change in a gradient fashion from ∼2.5

Estilos ABNT, Harvard, Vancouver, APA, etc.

40

Chen, Jing, Meng-Yao Chao, Yan Liu, Bo-Wei Xu, Wen-Hua Zhang, and David J. Young. "An N,N′-diethylformamide solvent-induced conversion cascade within a metal–organic framework single crystal." Chemical Communications 56, no. 44 (2020): 5877–80. http://dx.doi.org/10.1039/d0cc02420a.

Texto completo da fonte

Resumo:

A two-dimensional metal–organic framework undergoes four-step single-crystal to single-crystals conversions, including a three-step DEF-induced cascade conversion to shuttle back to its original connectivity.

Estilos ABNT, Harvard, Vancouver, APA, etc.

41

Perumal, R., S. Thanikaikarasan, M. Saravannan, R. Kanimozhi, and S. Sudharthini. "Influence of Halogens on the Growth Aspects of Allylthiourea Cadmium Complex Nonlinear Optical Single Crystals." Journal of New Materials for Electrochemical Systems 25, no. 2 (June 10, 2022): 110–15. http://dx.doi.org/10.14447/jnmes.v25i2.a04.

Texto completo da fonte

Resumo:

Allylthiourea complex crystals is an organometallic complex, a new nonlinear optical materials with high second harmonic generation effect. Tri-allylthiourea cadmium chloride and Tri-allylthiourea cadmium bromide are the promising nonlinear optical crystals belonging to this family. Both the crystals have been grown from an aqueous solution by slow cooling technique. The solubility and growth optimization of the grown crystals in terms of pH were analyzed and the influence of the different halogen atoms on the properties of as grown single crystals was studied by conducting various characteriz

Estilos ABNT, Harvard, Vancouver, APA, etc.

42

Yu, Jianyuan, Yingeng Wang, Yan Huang, Xiuwen Wang, Jing Guo, Jingkai Yang, and Hongli Zhao. "Structural and electronic properties of SnO2 doped with non-metal elements." Beilstein Journal of Nanotechnology 11 (September 3, 2020): 1321–28. http://dx.doi.org/10.3762/bjnano.11.116.

Texto completo da fonte

Resumo:

Crystal structure and electronic properties of SnO2 doped with non-metal elements (F, S, C, B, and N) were studied using first-principles calculations. The theoretical results show that doping of non-metal elements cannot change the structure of SnO2 but result in a slight expansion of the lattice volume. The most obvious finding from the analysis is that F-doped SnO2 has the lowest defect binding energy. The doping with B and S introduced additional defect energy levels within the forbidden bandgap, which improved the crystal conductivity. The Fermi level shifts up due to the doping with B, F

Estilos ABNT, Harvard, Vancouver, APA, etc.

43

Lim, W. T., J. H. Jang, N. Y. Park, S. M. Paek, W. C. Kim, and M. Park. "Spontaneous nanoparticle formation coupled with selective adsorption in magadiite." Journal of Materials Chemistry A 5, no. 8 (2017): 4144–49. http://dx.doi.org/10.1039/c7ta00038c.

Texto completo da fonte

Resumo:

The adsorbed heavy metal cations were spontaneously and systematically transformed into the corresponding hydroxide nanoparticles exclusively on the crystal edges and the nanoparticles ultimately sprouted out of the crystals on full growth.

Estilos ABNT, Harvard, Vancouver, APA, etc.

44

Su, Longxing. "Growth of a Sub-Centimeter-Sized CsPbBr3 Bulk Single Crystal Using an Anti-Solvent Precipitation Method." Symmetry 16, no. 3 (March 9, 2024): 332. http://dx.doi.org/10.3390/sym16030332.

Texto completo da fonte

Resumo:

A facile and low-cost strategy to fabricate CsPbBr3 single crystals is essential for developing perovskite optoelectronic devices. Herein, we have presented a room temperature anti-solvent precipitate method for growing sub-centimeter-sized CsPbBr3 single crystals. The as-prepared CsPbBr3 single crystal has an orthorhombic structure, and phase transition occurs as the measured temperature increases. The as-grown CsPbBr3 single crystal also shows abundant surface morphologies including footsteps, precipitated crystals, cracks, and pits. Subsequently, a metal–semiconductor–metal (MSM)-structured

Estilos ABNT, Harvard, Vancouver, APA, etc.

45

Shen, Kui, Lei Zhang, Xiaodong Chen, Lingmei Liu, Daliang Zhang, Yu Han, Junying Chen, et al. "Ordered macro-microporous metal-organic framework single crystals." Science 359, no. 6372 (January 11, 2018): 206–10. http://dx.doi.org/10.1126/science.aao3403.

Texto completo da fonte

Resumo:

We constructed highly oriented and ordered macropores within metal-organic framework (MOF) single crystals, opening up the area of three-dimensional–ordered macro-microporous materials (that is, materials containing both macro- and micropores) in single-crystalline form. Our methodology relies on the strong shaping effects of a polystyrene nanosphere monolith template and a double-solvent–induced heterogeneous nucleation approach. This process synergistically enabled the in situ growth of MOFs within ordered voids, rendering a single crystal with oriented and ordered macro-microporous structur

Estilos ABNT, Harvard, Vancouver, APA, etc.

46

Hans, Philipp, Berthold Stöger, Matthias Weil, and Erich Zobetz. "Structure of the mixed-metal carbonate KAgCO3revisited: order–disorder (OD) polytypism and allotwinning." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 71, no. 2 (March 31, 2015): 194–202. http://dx.doi.org/10.1107/s2052520615004138.

Texto completo da fonte

Resumo:

Crystals of KAgCO3belong to an order–disorder (OD) family of structures composed of layers of two kinds. There are two polytypes with a maximum degree of order [MDO1:Pccb; MDO2:Ibca, doubleda-axis compared with MDO1], which are both realised to a different extent in two crystals under investigation [volume fraction MDO1:MDO2in crystal (I): 0.0216:0.9784 (3) and in crystal (II): 0.9657:0.0343 (3)]. Sharp diffraction spots and the absence of diffuse scattering indicate highly ordered macroscopic domains. The structure of KAgCO3was refined concurrently against all reflections using an allotwin mo

Estilos ABNT, Harvard, Vancouver, APA, etc.

47

Owens-Baird, Bryan, Juliana P. S. Sousa, Yasmine Ziouani, Dmitri Y. Petrovykh, Nikolai A. Zarkevich, Duane D. Johnson, Yury V. Kolen'ko, and Kirill Kovnir. "Crystallographic facet selective HER catalysis: exemplified in FeP and NiP2 single crystals." Chemical Science 11, no. 19 (2020): 5007–16. http://dx.doi.org/10.1039/d0sc00676a.

Texto completo da fonte

Resumo:

The effect of the crystal structure of ordered transition-metal phosphide catalysts on the hydrogen-evolution reaction is investigated using single crystals of iron-phosphide (FeP) and monoclinic nickel-diphosphide (m-NiP<sub>2</sub>).

Estilos ABNT, Harvard, Vancouver, APA, etc.

48

Ge, Meng, Xiaodong Zou, and Zhehao Huang. "Three-Dimensional Electron Diffraction for Structural Analysis of Beam-Sensitive Metal-Organic Frameworks." Crystals 11, no. 3 (March 8, 2021): 263. http://dx.doi.org/10.3390/cryst11030263.

Texto completo da fonte

Resumo:

Electrons interact strongly with matter, which makes it possible to obtain high-resolution electron diffraction data from nano- and submicron-sized crystals. Using electron beam as a radiation source in a transmission electron microscope (TEM), ab initio structure determination can be conducted from crystals that are 6–7 orders of magnitude smaller than using X-rays. The rapid development of three-dimensional electron diffraction (3DED) techniques has attracted increasing interests in the field of metal-organic frameworks (MOFs), where it is often difficult to obtain large and high-quality cry

Estilos ABNT, Harvard, Vancouver, APA, etc.

49

Krishnamoorthy, Aravind, Lindsay Bassman, Rajiv K. Kalia, Aiichiro Nakano, Fuyuki Shimojo, and Priya Vashishta. "Kinetics and Atomic Mechanisms of Structural Phase Transformations in Photoexcited Monolayer TMDCs." MRS Advances 3, no. 6-7 (2018): 345–50. http://dx.doi.org/10.1557/adv.2018.122.

Texto completo da fonte

Resumo:

ABSTRACTRapid transitions between semiconducting and metallic phases of transition-metal dichalcogenides are of interest for 2D electronics applications. Theoretical investigations have been limited to using thermal energy, lattice strain and charge doping to induce the phase transition, but have not identified mechanisms for rapid phase transition. Here, we use density functional theory to show how optical excitation leads to the formation of a low-energy intermediate crystal structure along the semiconductor-metal phase transition pathway. This metastable crystal structure results in signifi

Estilos ABNT, Harvard, Vancouver, APA, etc.

50

Kirman, Marina, Artem Talantsev, and Roman Morgunov. "Peierls “Washboard” Controls Dynamics of the Domain Walls in Molecular Ferrimagnets." Solid State Phenomena 233-234 (July 2015): 55–59. http://dx.doi.org/10.4028/www.scientific.net/ssp.233-234.55.

Texto completo da fonte

Resumo:

The magnetization dynamics of metal-organic crystals has been studied in low frequency AC magnetic field. Four modes of domain wall motion (Debye relaxation, creep, slide and over - barrier motion (switching)) were distinguished in [MnII(H(R/S)-pn)(H2O)] [MnIII(CN)6]⋅2H2O crystals. Debye relaxation and creep of the domain walls are sensitive to Peierls relief configuration controlled by crystal lattice chirality. Structural defects and periodical Peierls potential compete in the damping of the domain walls. Driving factor of this competition is ratio of the domain wall width to the crystal lat

Estilos ABNT, Harvard, Vancouver, APA, etc.

Oferecemos descontos em todos os planos premium para autores cujas obras estão incluídas em seleções literárias temáticas. Contate-nos para obter um código promocional único!