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Online since: December 2009
Authors: Jie Shen, Wen Chen, Jing Zhou, Jie Zhu, Qiong Lei
The structure analysis in terms of tolerance factor gives an identical result as calculation.
Uncovering the relationship between chemistry, structure and dielectric properties is of the utmost importance for the rational of design of new dielectric materials.
In other words, t controls the bond character in terms of structure, while the atomic net charge indicates the bond character in terms of chemistry.
It can be concluded from the results that the microwave dielectric properties of (1-x)CT-xCZN ceramics varies with element chemistry and structure, such as bond length and bond angle, and it can be easily modified by changing the relative content of Zn and Nb to Ti.
The structure analysis in terms of tolerance factor gives an identical result as calculation.
Online since: September 2014
Authors: Nataliya A. Gavrilenko, Mikhail A. Gavrilenko, Yurii G. Slizhov, Zhanna V. Faustova, Tatiana A. Kasymova
Complexes of Cu(acac)2 on the surface of silica gel are arranged in the form of island structures.
Modification with chelate containing complexes changes the structure and properties of the initial sorbents.
Mihargo, Correlation between physical properties and structure of silica xerogels, Journal of Non-Crystalline Solids, 347 (2004) 128-137
Gavrilenko, Complexation with Metal Chelates at the Phase Interface in Gas Chromatography, Russian Journal of Coordination Chemistry, 10 (2002) 736-752 [7] Zh.V.
Journal of Physical Chemistry B, 108 (2004) 7323-7330
Online since: February 2012
Authors: Ya Yin He
Application Research of Reverse Engineering in the Bionic Structure Design YaYin He College of Mechanical Engineering, Shaanxi University of Technology, Hanzhong 723003, China heyayin@21cn.com Keywords: reverse engineering, bionic structure design, surface reconstruction, Geomagic Abstract: According to the fact that there need the model to simulate the biological structure and principle in the modern bionic design, the thought combining the reverse engineering(RE) with the bionic structure design was put forward.
Its research scope includes mechanical bionic, physical bionic, chemistry bionic, human bionic, intelligent bionic and so on.
Bionic structure design mainly study the application problem of organism and natural substances internal structure principle for the design, and it applies to product design and architecture design.
There are many successful examples in the bionic structure, for example, honeycomb structure, texture structure, framework structure, and so on.
When bionic structure uses the reverse engineering, it can quickly find the connection between the corresponding biological structure and the design according to the psychological needs of consumer groups.
Online since: December 2012
Authors: Yu Du, Gui Jun Shen, Xin Hua
Yuan, Fabrication of poly(hydroquinone) modified expanded graphite electrode and its properties, Chinese Journal of Analytical Chemistry, 38 (2010) 555-558
Kan, Fabrication of expanded graphite electrode and its application in electrochemical detection of tryptophan, Chinese Journal of Chemistry, 37 (2009) 62-66
Krauss, The structure and electrochemical behavior of nitrogen-containing nanocrystalline diamond films deposited from CH4/N2/Ar mixtures, Journal of The Electrochemical Society, 148 (2001) E44-E51
Pyun, Electrochemical ELISA using diamond-like carbon (DLC) microelectrode for RA diagnosis, Procedia Chemistry, 1 (2009) 1047-1050
Qi, Voltammetric sensor based on ordered mesoporous carbon for folic acid determination, Journal of Electroanalytical Chemistry, 660 (2011) 2-7
Online since: August 2008
Authors: S. Janta, Sakdiphon Thiensem, S. Watanesk, R. Watanesk
Thiansem 2, 1 Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand. 2Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200,Thailand.
It has high porous structure, low density, high surface area and high amounts of adsorbing species in the oxide form of silica, alumina and iron.
The morphology of the surface through SEM shown in Fig. 1 reveals that the diatomite has a high porous structure with waffle-like rods.
Acknowledgment The authors are thankful to the Center for Innovation in Chemistry: Postgraduate Education and Research Program in Chemistry (PERCH-CIC) for partial financial support, Chiang Mai Rajabhat University, the Graduate School and the Department of Chemistry, Chiang Mai University for facilities provision.
Online since: February 2013
Authors: De Ming Han, Gang Zhang, Li Hui Zhao
Theoretical Studies on the Electronic Structures and Spectral Properties of Two Iridium(III) Complexes with Tetraphenylimidodiphosphinate Ligand Han De-ming1,a, Zhang Gang2,b and Zhao Li-hui1,c 1 International Joint Research Center for Nanophotonics and Biophotonics, School of Life Science and Technology, Changchun University of Science and Technology, Changchun 130022, China 2 State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China ahandeming2009@yahoo.com, bzhanggang1999@yahoo.com, czhaolihui@yahoo.com Keywords: DFT, TDDFT, Electroluminescence, Iridium Abstract.
The geometrical structures, electronic structures, and spectral properties of two Ir(III) complexes with tetraphenylimidodiphosphinate ligand were investigated theoretically.
In order to investigate the structure-property relationships and improve the design of OLEDs, we theoretically investigated the electronic structure, absorption and emission properties of two iridium(III) complexes using density functional theory (DFT) and time-dependent density functional theory (TDDFT).
In Fig. 1, the sketch map and the optimized ground-state geometrical structures of IrL1 and IrL2 are presented.
Here, our calculated results demonstrate that excited-state electronic structures can best be described in terms of multiconfigurations.
Online since: June 2014
Authors: Sulaiman Hasan, Sitikhadijah Hubadillah, Muhamad Zaini Yunos, Zawati Harun
They found that the chemistry between the flux performance and polyethersulfone membrane was enhanced with the addition of water, ethanol and propanol of non-solvent additives.
As for example, in phase inversion method, the structure of membrane is always being observed in finger-like structure.
Therefore the formation of structure is more likely to be homogeneous porous instead of fingerlike structure.
Maiti, Journal of Physics and Chemistry of Solids (2009). 70(11): p. 1395-1400
Hoek: submitted to Industrial & Engineering Chemistry Research (2011).
Online since: April 2015
Authors: Raden Dadan Ramdan, Rochim Suratman, Asep Ridwan Setiawan
It can also be observed coarser structure of the later sample in the form of granular structure, which is then causing the more porous structure of the sample.
For Cr2O3-La2O3 coated sample, only Cr2O3 structure was observed.
Kim, Journal of Industrial and Engineering Chemistry. 15 (4) (2009) 445-450 [2] W.Shong, C.K Liu, S.H.
Zaza, Materials Chemistry and Physics. 144 (3)(2014) 491-497 [8] H.S.
Yang, Materials Chemistry and Physics. 134(2-3) (2012) 670-676 [14] J.
Online since: January 2014
Authors: Chang Jun Shi, Rui Zhen Xie, Ren Xiaoming, Liu Lan, Xue Yan
Study of MEMS based Micropyrotechnic Igniter XUE Yan1, a, SHI Changjun2,b, REN Xiaoming1,c, LIU Lan1,d and XIE Ruizhen1,e 1Science and Technology on Applied Physical Chemistry Laboratory, Shaanxi Applied Physics-Chemistry Research Institute, ZhuQue Avenue No.213, Xi’an 710061, China 2Xi’an Modern Chemistry Resezrch Institute, ZhangBa East Road No.68, Xi’an,710065,China axueyan213@163.com, bdrawn550@126.com, crxm_2003@163.com, d383131204@qq.com, eXieruizhen@126.com, Keywords: Micro-electro-mechanical system(MEMS); Ni-Cr bridges; Lead styphnate(LTNR); Micropyrotechnic igniter.
Then etched and then passivated, iterative process form the structure of holes or chambers.
Fig.3:The process flow of the silicon chamber Firstly,the silicon with double-sided polishing is cleaning by wet; The back of the silicon is spined coating, lithographed, developmented, etched to form structure of channel, and prominent structure on glass are embed into structure of channel in silicon by next process of bonding; Secondly, a metal layer of Al was deposited on positive of silicon, the process of spin coating, lithography, development and wet etch are doing on Al layer of silicon to form array hole of protecting structure; Thirdly, silicon with array hole of protecting structure array hole of protecting structure is formed array hole of charge by etch of ICP. 3.Experiments The energetic materials of pyrotechnics are relatively unstable materials, which is easy to explosion and burning effect by exoteric energy.
Journal of Physics and Chemistry of Solids 71.p75-79
Online since: November 2017
Authors: Samart Kongtaweelert, Kittisak Choojun, Chaval Sriwong
Investigation of the Influences of Reaction Temperature and Time on the Chemical Reduction of Graphene Oxide by Conventional Method Using Vitamin C as a Reducing Agent Chaval Sriwong1,a*, Kittisak Choojun1,2,b, Samart Kongtaweelert1,c 1Department of Chemistry, Faculty of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok, 10520, Thailand 2Catalytic Chemistry Research Unit, Department of Chemistry, Faculty of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Road, Ladkrabang, Bangkok 10520, Thailand akschaval@yahoo.com, bkittisak.ch@kmitl.ac.th, csamart523@gmail.com Keywords: Graphene oxide (GO), reduced graphene oxide (rGO), chemical reduction, vitamin C, reducing agent.
The crystal structures of GO and rGO were identified by X-ray diffraction (XRD) (XRD-6100, Shimadzu, Japan).
This result indicted that the electronic conjugations inside the rGO structure were restored after the reduction of GO [1,3], which these the chemical structures as shown in Scheme 1.
Possible chemical structures of GO sheet, and the obtained rGO sheet over the chemical reduction by using Vitamin C as a reducing agent.
Acknowledgment The authors would like to thanks the Department of Chemistry, Faculty of Science, King Mongkut’s Institute of Technology Ladkrabang for the financial support.