发布求助
文献互助 智能选刊 最新文献

结晶过程及技术期刊(英文)最新文献

筛选
英文 中文
Growth and Characterization of Bisthiourea Nickel Bromide—New Semiorganic Nonlinear Optical Crystal 新型半有机非线性光学晶体双硫脲-溴化镍的生长与表征
结晶过程及技术期刊(英文) Pub Date : 2013-04-30 DOI: 10.4236/JCPT.2013.32008
R. Sundararajan, M. Senthilkumar, C. Ramachandraraja
{"title":"Growth and Characterization of Bisthiourea Nickel Bromide—New Semiorganic Nonlinear Optical Crystal","authors":"R. Sundararajan, M. Senthilkumar, C. Ramachandraraja","doi":"10.4236/JCPT.2013.32008","DOIUrl":"https://doi.org/10.4236/JCPT.2013.32008","url":null,"abstract":"A new semiorganic nonlinear optical crystal of bisthiourea nickel bromide (BTNB) was grown successfully by slow evaporation technique using water as solvent. The lattice parameters of the grown crystal have been determined by X-ray diffraction studies. Vibrational spectrum is recorded to determine symmetries of molecular vibrations. Optical absorbance spectrum recorded revealed that this crystal has good transparency in the visible region. The second harmonic generation test of BTNB confirmed the nonlinear nature of the crystal. The BTNB crystal was analyzed by a differential thermal analysis and thermogravimetric analysis (DTA-TGA) to obtain its thermal stability. Vickers microhardness test done on the crystal shows that the crystal has greater physical strength.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"3 1","pages":"56-59"},"PeriodicalIF":0.0,"publicationDate":"2013-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70941371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Optical Methods in Orientation of High-Purity Germanium Crystal 高纯锗晶体取向的光学方法
结晶过程及技术期刊(英文) Pub Date : 2013-04-30 DOI: 10.4236/JCPT.2013.32009
Guojian Wang, Yongchen Sun, Y. Guan, D. Mei, Gang Yang, A. A. Chiller, Bruce Gray
{"title":"Optical Methods in Orientation of High-Purity Germanium Crystal","authors":"Guojian Wang, Yongchen Sun, Y. Guan, D. Mei, Gang Yang, A. A. Chiller, Bruce Gray","doi":"10.4236/JCPT.2013.32009","DOIUrl":"https://doi.org/10.4236/JCPT.2013.32009","url":null,"abstract":"Two optical methods, namely crystal \u0000facet reflection and etching pits reflection, were used to orient \u0000and high-purity germanium crystals. The X-ray diffraction patterns \u0000of three slices that were cut from the oriented and \u0000crystals were measured by X-ray diffraction. The experimental errors of crystal \u0000facet reflection method and etching pits reflection method are in the range of 0.05° - 0.12°. The crystal facet reflection \u0000method and etching pits reflection method are extremely simple and cheap and \u0000their accuracies are acceptable for characterizing high purity detector-grade \u0000germanium crystals.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"03 1","pages":"720-726"},"PeriodicalIF":0.0,"publicationDate":"2013-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70941490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Dielectric and Optical Characterization of Boron Doped Ammonium Dihydrogen Phosphate 掺硼磷酸二氢铵的介电和光学特性
结晶过程及技术期刊(英文) Pub Date : 2013-01-28 DOI: 10.4236/JCPT.2013.31002
Delci Zion, Shyamala Devarajan, T. Arunachalam
{"title":"Dielectric and Optical Characterization of Boron Doped Ammonium Dihydrogen Phosphate","authors":"Delci Zion, Shyamala Devarajan, T. Arunachalam","doi":"10.4236/JCPT.2013.31002","DOIUrl":"https://doi.org/10.4236/JCPT.2013.31002","url":null,"abstract":"Single crystals of pure and boron doped ammonium dihydrogen phosphate were grown from aqueous solution by slow solvent evaporation process. ICP studies were done to confirm the presence of the dopant boron in the parent crystal. The values of the lattice parameters were determined by single crystal X-ray diffraction. The pure and doped ADP crystals were found to have tetragonal structure. Complete optical characterizations of the crystals were done using the FTIR, UV-Vis and NLO studies. The presences of the various functional groups in the crystals were identified by FTIR spectrum. The band gap energies of the pure and doped crystals have been calculated at their cut off frequencies using the UV-Vis spectrum. The second harmonic generation efficiency of the crystals was determined. The electric properties of the grown crystal have been analyzed by studying the variation of dielectric constant and dielectric loss with frequency.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"03 1","pages":"5-11"},"PeriodicalIF":0.0,"publicationDate":"2013-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70940889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Crystallization and Characterization of a New Fluorescent Molecule Based on Schiff Base 一种新型希夫碱荧光分子的结晶与表征
结晶过程及技术期刊(英文) Pub Date : 2013-01-28 DOI: 10.4236/JCPT.2013.31004
Dehua Zhang, Xiaoyan Zhang
{"title":"Crystallization and Characterization of a New Fluorescent Molecule Based on Schiff Base","authors":"Dehua Zhang, Xiaoyan Zhang","doi":"10.4236/JCPT.2013.31004","DOIUrl":"https://doi.org/10.4236/JCPT.2013.31004","url":null,"abstract":"In this analysis, the single crystal of schiff base has been synthesized and the purity of material has been increased by repeated recrystallization process. Single crystal was grown by adopting the method growing in a slow evaporation solution using ethanol as solvent at room temperature. A new fluorescent molecule based on Schiff base has been synthesised and its binding properties investigated by fluorescence spectroscopy to show that it can selectively bind Cu2+ with fluorescence quenching.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"2013 1","pages":"28-30"},"PeriodicalIF":0.0,"publicationDate":"2013-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70941078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
ACCEPT-NMR: A New Tool for the Analysis of Crystal Contacts and Their Links to NMR Chemical Shift Perturbations ACCEPT-NMR:一种分析晶体接触及其与核磁共振化学位移摄动的联系的新工具
结晶过程及技术期刊(英文) Pub Date : 2013-01-28 DOI: 10.4236/JCPT.2013.31003
I. Sergeyev, A. McDermott
{"title":"ACCEPT-NMR: A New Tool for the Analysis of Crystal Contacts and Their Links to NMR Chemical Shift Perturbations","authors":"I. Sergeyev, A. McDermott","doi":"10.4236/JCPT.2013.31003","DOIUrl":"https://doi.org/10.4236/JCPT.2013.31003","url":null,"abstract":"We have developed an open-source cross-platform software toolkit entitled ACCEPT-NMR (Automated Crystal Contact Extrapolation/Prediction Toolkit for NMR) as a helpful tool to automate many of the complex tasks required to find and visualize crystal contacts in structures of biomolecules and biomolecular assemblies. This toolkit provides many powerful features geared toward NMR spectroscopy and related disciplines, such as isotopic labeling, advanced visualization options, and reporting tools. Using this software, we have undertaken a survey of available chemical shift data in the literature and deposited in the BMRB, and show that the mere presence of one or more crystal contacts to a residue confers an approximately 65% likelihood of significant chemical shift perturbations (relative to solution NMR chemical shifts). The presence of each additional crystal contact subsequently increases this probability, resulting in predictive accuracies in excess of 80% in many cases. Conversely, the presence of a significant experimental chemical shift perturbation indicates a >60% likelihood of finding one or more crystal contacts to a particular residue. Pinpointing sites likely to experience large CSPs is critical to mapping solution NMR chemical shifts onto solid-state NMR data as a basis for preliminary assignments, and can thus simplify the assignment process for complex biomolecules. Mapping observed CSPs onto the molecular structure, on the other hand, can indicate the presence of crystal interfaces where no crystal structure is available. Finally, by detecting sites critical to intermolecular interfaces, ACCEPT-NMR can help guide experimental approaches (e.g. isotopic labeling schemes) to detect and probe specific inter-subunit interactions.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"03 1","pages":"12-27"},"PeriodicalIF":0.0,"publicationDate":"2013-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70940948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Oleic Acid Composition Effect on the Carboxymethyl Cellulose Based Biopolymer Electrolyte 油酸组成对羧甲基纤维素基生物聚合物电解质的影响
结晶过程及技术期刊(英文) Pub Date : 2013-01-28 DOI: 10.4236/JCPT.2013.31001
M. Chai, D. Zion, S. Devarajan, I. Sergeyev, D. H. Zhang, R. Rastogi, S. K. Srivastava, A. Fouzri, M. A. Boukadhaba, A. H. Tauré, N. Sakly, I. Sergeyev, Ann E. McDermott
{"title":"The Oleic Acid Composition Effect on the Carboxymethyl Cellulose Based Biopolymer Electrolyte","authors":"M. Chai, D. Zion, S. Devarajan, I. Sergeyev, D. H. Zhang, R. Rastogi, S. K. Srivastava, A. Fouzri, M. A. Boukadhaba, A. H. Tauré, N. Sakly, I. Sergeyev, Ann E. McDermott","doi":"10.4236/JCPT.2013.31001","DOIUrl":"https://doi.org/10.4236/JCPT.2013.31001","url":null,"abstract":"Biopolymer electrolyte based on carboxymethyl cellulose has been prepared by doping with different concentration of oleic acid via solution casting technique. Fourier Transform Infrared spectroscopy was used to study the complexation between the salt and polymer. New peak was observed at 1710, 2850, 2920 cm-1. X-ray diffraction study reveals the amorphous nature of the biopolymer electrolyte. Impedance study shows the highest ionic conductivity, σ, was found to be 2.11 × 10-5 S·cm-1 at room temperature (303 K) for sample containing 20 wt.% of oleic acid and the biopolymer electrolyte obeys Arrhenius behaviour.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"2013 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2013-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70940814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 111
Synthesis, Spectral Characterization and Ligation of N-(2-(Phenylseleno)ethyl)phthalimide N-(2-(苯硒基)乙基)邻苯亚胺的合成、光谱表征及连接
结晶过程及技术期刊(英文) Pub Date : 2013-01-28 DOI: 10.4236/JCPT.2013.31005
R. Rastogi, S. Srivastava, Shikha Asolia, R. Butcher
{"title":"Synthesis, Spectral Characterization and Ligation of N-(2-(Phenylseleno)ethyl)phthalimide","authors":"R. Rastogi, S. Srivastava, Shikha Asolia, R. Butcher","doi":"10.4236/JCPT.2013.31005","DOIUrl":"https://doi.org/10.4236/JCPT.2013.31005","url":null,"abstract":"PhSe-Na+ generated in situ by reduction of PhSeSePh, with sodium borohydride on reaction with N-(2-bromoethyl) phthalimide in N2 atmosphere results in the formation of N-[2-(phenylseleno)ethyl]phthalimide (L1). The title compound has been characterized by elemental analysis, FT-IR, 1H and 13C NMR techniques. The crystal structure of L1 has been solved by direct methods and refined by full-matrix least squares. The ligand L1 crystallize in the monoclinic space group. Selenium forms two Se-C linkages, one is due to Se-Calkyl and the other one to Se-Caryl. Further, the ligation reaction of L1 with complex 1 is also explored whose identities are characterized by spectroscopic techniques.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"03 1","pages":"31-34"},"PeriodicalIF":0.0,"publicationDate":"2013-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70941101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Structural, Morphological, Optical and Electrical Properties of Zn(1−x)CdxO Solid Solution Grown on a- and r-Plane Sapphire Substrate by MOCV MOCV法生长Zn(1−x)CdxO固溶体的结构、形态、光学和电学性质
结晶过程及技术期刊(英文) Pub Date : 2013-01-28 DOI: 10.4236/JCPT.2013.31006
A. Fouzri, M. A. Boukadhaba, A. H. Tauré, N. Sakly, A. Bchetnia, V. Sallet
{"title":"Structural, Morphological, Optical and Electrical Properties of Zn(1−x)CdxO Solid Solution Grown on a- and r-Plane Sapphire Substrate by MOCV","authors":"A. Fouzri, M. A. Boukadhaba, A. H. Tauré, N. Sakly, A. Bchetnia, V. Sallet","doi":"10.4236/JCPT.2013.31006","DOIUrl":"https://doi.org/10.4236/JCPT.2013.31006","url":null,"abstract":"Zn(1-x)CdxO films have been grown on (a-plane) and (r-plane) sapphire substrate by metal organic chemical vapor deposition. A maximum cadmium incorporation of 8.5% and 11.2% has been respectively determined for films deposited on a- and r-plane sapphire. The optical transmission spectra and energy band-gap equation established by Makino et al. were used to estimate the cadmium mole fraction of the solid solutions. Structural, morphological and optical properties of these films were examined using high resolution X-ray diffraction (HRXRD), atomic force microscopy (AFM) and room and low temperature photoluminescence (Pl) as Cd incorporation and employed substrate. X-ray diffraction study revealed that all films had wurtzite phase but solid solution grown on a-plane sapphire are polycrystalline with a preferred orientation along the [0001] direction and a-plane film are epitaxially grown on r-plane sapphire. AFM image show significant differences between morphologies depending on orientation sapphire substrate but no significant differences on surface roughness have been found. The near band-edge photoluminescence emission shifts gradually to lower energies as Cd is incorporated and reaches 2.916 eV for the highest Cd content (11.2%) at low temperature (20 K). The room temperature hall mobility decreases with the Cd incorporation but it is larger for Zn(1-x)CdxO grown on r-plane sapphire.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"03 1","pages":"36-48"},"PeriodicalIF":0.0,"publicationDate":"2013-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4236/JCPT.2013.31006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70941553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Rietveld Refinement of Nanocrystalline LiFeO 2 Synthesized by Sol-Gel Method and Its Structural and Magnetic Properties 溶胶-凝胶法制备纳米晶life2o2的Rietveld细化及其结构和磁性能
结晶过程及技术期刊(英文) Pub Date : 2012-10-17 DOI: 10.4236/JCPT.2012.24022
K. Kumar, A. Sangeetha, A. Raghavender, Ž. Skoko, G. Kumar
{"title":"Rietveld Refinement of Nanocrystalline LiFeO 2 Synthesized by Sol-Gel Method and Its Structural and Magnetic Properties","authors":"K. Kumar, A. Sangeetha, A. Raghavender, Ž. Skoko, G. Kumar","doi":"10.4236/JCPT.2012.24022","DOIUrl":"https://doi.org/10.4236/JCPT.2012.24022","url":null,"abstract":"Nanocrystalline lithium iron oxide LiFeO2 was synthesized using sol-gel method. Rietveld analysis was performed to confirm the different phases associated in the formation of LiFeO2. Quantitative Rietveld refinement revealed that sample contains: 39.9 wt% of cubic α – LiFeO2 phase, 58.5 wt% of monoclinic β - LiFeO2 and tetragonal 1.7 wt%. of γ - LiFeO2. The nanocrystalline nature of the prepared samples was confirmed by SEM analysis. The magnetic properties of LiFeO2 showed ferromagnetic property at room temperature.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"2012 1","pages":"152-155"},"PeriodicalIF":0.0,"publicationDate":"2012-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70941110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Growth of Gallium Oxide Nanowires by Pulsed Laser Deposition 脉冲激光沉积法生长氧化镓纳米线
结晶过程及技术期刊(英文) Pub Date : 2012-10-17 DOI: 10.4236/JCPT.2012.24017
H. Yamahara, M. Seki, H. Tabata
{"title":"Growth of Gallium Oxide Nanowires by Pulsed Laser Deposition","authors":"H. Yamahara, M. Seki, H. Tabata","doi":"10.4236/JCPT.2012.24017","DOIUrl":"https://doi.org/10.4236/JCPT.2012.24017","url":null,"abstract":"We report on the synthesis of gallium oxide nanowires by pulsed laser deposition using a gold catalyst. In the vapor-liquid-solid process, gold thickness was the crucial parameter for deciding the morphology of nanowires. In the case of 1 nm thick gold, homogeneous nanowire growth was confirmed at temperatures of 700°C to 850°C. Transmission electron microscopy and selected area electron diffraction measurements showed that the nanowires were polycrystalline. In the cathode luminescence spectra, UV, blue, green and red emission peaks were observed, as reported in previous studies. As growth temperature was increased, the relative intensities of blue, green, and red emissions decreased. Thermal annealing treatments were effective in decreasing the blue, green and red emission peaks, suggesting that these emission peaks were associated with oxygen vacancies.","PeriodicalId":64440,"journal":{"name":"结晶过程及技术期刊(英文)","volume":"2012 1","pages":"125-129"},"PeriodicalIF":0.0,"publicationDate":"2012-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70940944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信