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Online since: December 2012
Authors: U. Hashim, Tijjani Adam, Pei Ling Leow, Q. Humayun
The nanostructure form in this study is a rectangular structure.
The structure will be exact rectangular and In the rectangular structure have a width, length and height on it, such as in the figure (a).
The original resist structure is about 120 µm.
That is why the resist structure forms an isotropic on the middle of the resist structure.
References [1] T.Tsakalokos, I.A.ovid’ko, A.K.Vasudevan (2000), Nanostructures: Synthesis, functional properties and Applications, Vol 128, Mathematics, Physic and Chemistry
Online since: April 2012
Authors: M. Sutapun, Naratip Vittayakorn, B. Boonchom
FT-IR spectra indicated the presences of different crystallographic PO43− ion and H2O molecules for the Zn3(PO4)2.4H2O and Zn3(PO4)2 structures.
The Zn3(PO4)2.4H2O is an orthorhombic structure, dominated by the presence of puckered corner-sharing tetrahedral sheets of O atoms perpendicular to the b-axis, and separated by face-sharing O octahedral sheets.
The structures and crystallite sizes of the prepared hydrated sample and its dehydration product were identified by X-ray powder diffraction (Bruker-D8 Advanced) with Cu Ka radiation (λ = 0.1546 nm).
The synthesized Zn3(PO4)2.4H2O crystal showed an orthorhombic structure with the space group Pnma (Z=4), while its decomposed Zn3(PO4)2 crystal showed a monoclinic structure with the space group C2/c (Z=4).
The FT-IR and XRD data clearly confirmed the pure phase formation of Zn3(PO4)2.4H2O and Zn3(PO4)2, showing orthorhombic and monoclinic structure, respectively.
Online since: February 2011
Authors: Yan Hong Zhao, Li Chun Hou, Xiang Li, Xiaodong Yang, Xiao Jing Wang
E-mail address: ceyanhong@imu.edu.cn; wang_xiao_jing@hotmail.com , Lichun Hou1, b, Xiang Li1, c, Xiaodong Yang2, d, Xiaojing Wang1, e* 1College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, China, 010021 2College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot, China, 010051 aceyanhong@imu.edu.cn, b309200249@qq.com, clixiang420621@163.com, dyxd900226@163.com, ewang_xiao_jing@hotmail.com Keywords: Tantalum Oxide, Photocatalysis, Hydrothermal, Dope.
The phase structure of W-Ta2O5 particles was characterized by X-ray diffraction (XRD).
The phase structure was identified by X-ray diffraction (D8-ADVANCE, Bruker, Germany) with Cu Kα (λ= 1.5406 Å) radiation at a scan rate of 0.02 2θ S-1.
W doped Ta2O5 might change the surface structure of Ta2O5.
Online since: July 2015
Authors: Yose Fachmi Buys, Nor Afiza Syafina Lokman
It was found that the PLA/NR blends were immiscible, and the sea-island and co-continuous morphological structures were observed at PLA/NR with ratio of 80/20 vol% and 60/40 vol% respectively.
Fig 2 (a) revealed the sea-island structure, with the minor phase (NR) become the island or the dispersed phase. a While Fig. 2 (b) revealed that as the NR content Fig. 2 SEM micrograph of (a) PLA/NR (80/20) and (b) PLA/NR (60/40) increased, the NR droplets coalesced together, result in formation of co-continuous structure of the blend [6].
Materials Chemistry and Physics, 129(3), 823-831
Online since: January 2013
Authors: Rihayat Teuku, Amroel Suryani
The morphologies of samples were revealed by transmission electron microscopy (TEM) and Intercalation of PU into clay galleries and crystalline structure of PU were investigated using X-ray diffraction (XRD).
Although the technology of polyurethanes is of recent origin, the chemistry of organic Isocyanates dates back to 1849 when Wurtz (G.Wegener, 2001; H.F.Mark, 1969) first synthesized aliphatic Isocyanates by reacting organic sulfates with cyanates (fig.1) Figure 1 : First synthesized aliphatic isocyanates by Wurtz The initial step that led to the worldwide interest in polyurethanes was taken by Otto Bayer of I.G.
Figures 8.c and 8.d, exhibits a well-intercalated and exfoliated structure.
At the other image in figures 8.e and 8.f, show fine and almost uniform distribution of clay particles in the PU matrix where the clay particles exhibit both stacked and flocculated to the sample surface and an intercalated structure has been produced.
Online since: April 2010
Authors: Guo Qiang Tan, Hong Yan Miao, Hai Yang Bo, Ao Xia
Co-precipitation Synthesis of BiFeO3 Powders Bo Hai-Yanga, Tan Guo-Qiang, Miao Hong-Yanb and Xia Ao Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an, Shaanxi,710021, China a bohaiyang2008@163.com; b mhy@sust.edu.cn Keywords: BiFeO3 powders; Co-precipitation synthesis; Ferromagnetic material.
The work studies the calcination temperature and molar ratio of Fe and Bi on the structure and morphology.
BFO, rhombohedrally distorted perovskite structure with space group R3c at room temperature, is ferroelectric (TC=830°C) and antiferromagnetic (TN=370°C)[1].
In addition, solid solutions with excellent ferroelectric properties can be formed by BFO and a number of other perovskite structure compounds [3~6].
Online since: May 2012
Authors: Edwige Bano, Laurence Latu-Romain, Thierry Chevolleau, Thierry Baron, J.H. Choi
We obtained hexagonal symmetry of SiC nanopillar, which might be attributed to the crystallographic structure of the SiC phase.
As a result of the SiC etching, hexagonal structure is formed since it energetically favored due to the minimum surface free energy of the facets [11].
Summary We have investigated the etching characteristics of SiC nanopillar in SF6/O2 plasma chemistry by using ICP methods.
It might be attributed to the crystallographic structure of the SiC phase.
Online since: November 2011
Authors: Wen Cai Xu, Sha Sun, Chun Xiu Zhang, Shi Yong Luo
The structures of these compounds were characterized by the methods of 1H-NMR and FTIR.
Cis-trans isomerization happens to its structure with the irradiation of light in a certain wavelength, which is beneficial for photoisomerization.
The structures of these compounds were characterized by the methods of 1H-NMR and FTIR.
Forum Vol.43-6 (2006), p. 46-47 [7] Information on http://www.hcclib.net/col2004/chemistry/col/2000/c00128.htm
Online since: January 2014
Authors: Zaliman Sauli, Vithyacharan Retnasamy, Nooraihan Abdullah, K. Anwar, Nurhafizah Ramli, They Yee Chin
Atomic force microscopy (AFM) was used in whole work to investigate the crystalline structure and surface roughness of the BST thin films.
The polycrystalline structure of BST thin films exhibit the properties that strongly dependent to composition microstructure, film thickness stoichiometry, homogeneity of the film and electrode characteristics.
The characteristics of BST thin films crystalline structure and surface roughness was determined by atomic force microscopy (AFM).
Tseng, "Progress in the developments of (Ba,Sr)TiO3 (BST) thin films for Gigabit era DRAMs," Materials Chemistry and Physics, vol. 65, pp. 227-248, 2000
Online since: May 2014
Authors: Ke Gao Liu, Jing Li, Zhi Gang Wang, Wen Cheng Gao
The band gap energy of films with the zinc blend structure was found to be about 1.76 eV.
Crystal structure of SnS compounds There are mainly two types of crystal structures for SnS: zinc blende structure and orthorhombic structure [17-20].
The film has a zinc blende structure or orthorhombic structure which is determined by the pH value of the deposition solution.
The earliest report about SnS/ZnO structured battery is meantioned [35].
Eventually the solar cell with structure of SnO2/SnS/ZMO/GZO was prepared [36].