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Online since: June 2023
Authors: Yu Han Gao, Hong Yan Zhang, Xiao Li Yang, Ya Ni Pan, Qing Rui Liang, Lu Ping Wang, Chao Gao, Jiu Yang Zhang, Xiu Xiu Ning
It should be stressed that the temperature gradient and corresponding diameter expansion structure for each run of crystal diameter expansion differs a lot.
Identical thermal field and crystal growth chamber structures for SiC diameter-expansion are used in the simulation processes in order to fix the crystal diameter as the single variable.
Therefore, it is necessary to design different growth chamber structures and RTG when crystal diameter expands to certain size in order to balance the thermal stress and lateral growth driving force.
The diameter expansion angle and related growth structure is optimized accordingly.
El-Ashry, Raman Mapping of Local Phases and Local Stress Fields in Silicon–Silicon Carbide Composites, Materials Chemistry and Physics 98 (2006) 410–414
Identical thermal field and crystal growth chamber structures for SiC diameter-expansion are used in the simulation processes in order to fix the crystal diameter as the single variable.
Therefore, it is necessary to design different growth chamber structures and RTG when crystal diameter expands to certain size in order to balance the thermal stress and lateral growth driving force.
The diameter expansion angle and related growth structure is optimized accordingly.
El-Ashry, Raman Mapping of Local Phases and Local Stress Fields in Silicon–Silicon Carbide Composites, Materials Chemistry and Physics 98 (2006) 410–414
Online since: May 2007
Authors: Yun Soo Lim, C.J. Kang, Jung Min Kim, Yong Sang Kim, Hyun Jung Her, Y.J. Choi, Jae Wan Kim
Nano-structured titania is one of the good candidates
showing the enhancement of physical properties by widening effective surface area.
Experimental The fabrication procedure of the ordered nanopores titania structures are schematically shown in Fig. 1.
Dimensions of the porous structure of the anodic alumina depend on the conditions of anodizing and subsequent pore widening process.
It shows that the initial pattern of the porous alumina template is preserved in the final titania structure.
References [1] Adachi M., Murata Y., Harada M., Yoshikawa S: Chemistry letters Vol. 2000 No. 8 (2000) p. 942
Experimental The fabrication procedure of the ordered nanopores titania structures are schematically shown in Fig. 1.
Dimensions of the porous structure of the anodic alumina depend on the conditions of anodizing and subsequent pore widening process.
It shows that the initial pattern of the porous alumina template is preserved in the final titania structure.
References [1] Adachi M., Murata Y., Harada M., Yoshikawa S: Chemistry letters Vol. 2000 No. 8 (2000) p. 942
Online since: May 2004
Authors: Toshiaki Yamaguchi, Koichi Kikuta, Shin Ichi Hirano, K. Ueno
Hirano
Department of Applied Chemistry, Graduate School of Engineering,
Nagoya University, Japan
Keywords: Strontium titanate, Varistor characteristics, Lanthanum nickel oxide, Electroconductive
oxide and Chemical solution deposition
Abstract.
Fig. 1 Schematic of SrTiO3/ Nb-doped SrTiO3/ SrTiO3 stacked layer structure SrTiO3 thin film (insulator) Pt/Ti/SiO2/Si substrate Nb:SrTiO3 thin film (semiconductor) SrTiO3 thin film (insulator) The authors have reported that the stacked films with SrTiO3 (insulator)/ Nb-doped SrTiO3 (semiconductor)/ SrTiO3 (insulator) structure prepared on platinized silicon (Pt/ Ti/ SiO2/ Si) substrate exhibit the characteristic nonlinear J-E varistor property as shown in Fig. 1 [6].
In this paper, we describe the electrical properties of the stacked varistor with SrTiO3/ Nb-doped SrTiO3/ SrTiO3 structure fabricated on Pt/ Ti/ SiO2/ Si and LaNiO3/ SiO2 substrates by CSD method.
The successive spin coating of the SrTiO3 and Nb: SrTiO3 precursor solutions on Pt/ Ti/ SiO2/ Si or LaNiO3/ SiO2 substrates followed by the crystallization at 600-700°C for 1 h with the calcination at 300°C for 1 h, affords the stacked films with SrTiO3/ Nb: SrTiO3/ SrTiO3 structure.
Synthesis and evaluation of SrTiO3-based stacked layer varistors SrTiO3/ Nb: SrTiO3/ SrTiO3 stacked layer structures were successfully synthesized on Pt/ Ti/ SiO2/ Si and LaNiO3/ SiO2 substrates by calcining SrTiO3 under-layer, Nb: SrTiO3 middle-layer and SrTiO3 top-layer at 700°C, 650°C and 600°C, respectively.
Fig. 1 Schematic of SrTiO3/ Nb-doped SrTiO3/ SrTiO3 stacked layer structure SrTiO3 thin film (insulator) Pt/Ti/SiO2/Si substrate Nb:SrTiO3 thin film (semiconductor) SrTiO3 thin film (insulator) The authors have reported that the stacked films with SrTiO3 (insulator)/ Nb-doped SrTiO3 (semiconductor)/ SrTiO3 (insulator) structure prepared on platinized silicon (Pt/ Ti/ SiO2/ Si) substrate exhibit the characteristic nonlinear J-E varistor property as shown in Fig. 1 [6].
In this paper, we describe the electrical properties of the stacked varistor with SrTiO3/ Nb-doped SrTiO3/ SrTiO3 structure fabricated on Pt/ Ti/ SiO2/ Si and LaNiO3/ SiO2 substrates by CSD method.
The successive spin coating of the SrTiO3 and Nb: SrTiO3 precursor solutions on Pt/ Ti/ SiO2/ Si or LaNiO3/ SiO2 substrates followed by the crystallization at 600-700°C for 1 h with the calcination at 300°C for 1 h, affords the stacked films with SrTiO3/ Nb: SrTiO3/ SrTiO3 structure.
Synthesis and evaluation of SrTiO3-based stacked layer varistors SrTiO3/ Nb: SrTiO3/ SrTiO3 stacked layer structures were successfully synthesized on Pt/ Ti/ SiO2/ Si and LaNiO3/ SiO2 substrates by calcining SrTiO3 under-layer, Nb: SrTiO3 middle-layer and SrTiO3 top-layer at 700°C, 650°C and 600°C, respectively.
Online since: May 2012
Authors: Xue Wang, Jing Lin Jiang, Zhan Xing Yang
Regional structure.
This region is located in east China, with the tectinic mobile belt of Mesozoic era, Cenozoic era, and belong to coast of the pacific tectonic domains, show the NE to the structure of the cloth to show for the main structure outline.
According to the rock chemistry, petrology and geochemistry of rocks and characteristics such as accessory minerals, speculate that granite in the area dominated by I-type, S-type take second place
The formation of metamorphism metallogenic series of gold metallogenic belt in Fuxin region mainly includes north and south zone, Southern zone is as the Paishanlou –construction of gold mine zone(belt), form a series of small, medium and large with the ductile shear zone type of gold deposits, such as the Paishanlou , large plate , Guohua , Yingtaogou gold mine, in which Are located Jinzhou Triangle Hill - Hal sets of NE trending of ductile shear zone; Northern zone is as Yangjiazhangzi – Balouzi gold mine zone(belt) , such as small and medium - sized gold output of Chagan, Haili board, Balouzi, all that belong to secondary strong brittle structure belt of the large faults of nearly EW trending of Chifeng - Kaiyuan of the Archaeozoic Eon.
The distribution characteristics of gold mine mine reflects that gold mineralization of growth generated inextricably linked with the geological structure.
This region is located in east China, with the tectinic mobile belt of Mesozoic era, Cenozoic era, and belong to coast of the pacific tectonic domains, show the NE to the structure of the cloth to show for the main structure outline.
According to the rock chemistry, petrology and geochemistry of rocks and characteristics such as accessory minerals, speculate that granite in the area dominated by I-type, S-type take second place
The formation of metamorphism metallogenic series of gold metallogenic belt in Fuxin region mainly includes north and south zone, Southern zone is as the Paishanlou –construction of gold mine zone(belt), form a series of small, medium and large with the ductile shear zone type of gold deposits, such as the Paishanlou , large plate , Guohua , Yingtaogou gold mine, in which Are located Jinzhou Triangle Hill - Hal sets of NE trending of ductile shear zone; Northern zone is as Yangjiazhangzi – Balouzi gold mine zone(belt) , such as small and medium - sized gold output of Chagan, Haili board, Balouzi, all that belong to secondary strong brittle structure belt of the large faults of nearly EW trending of Chifeng - Kaiyuan of the Archaeozoic Eon.
The distribution characteristics of gold mine mine reflects that gold mineralization of growth generated inextricably linked with the geological structure.
Online since: March 2010
Authors: Yong Wei Zhu, Dun Wen Zuo, Jun Li, Yong Zhu, Chuang Tian Chen
In the same CMP process conditions, the anisotropy of the crystal
leads to the different structure and atomic array of each crystal face and affects on MRR of
polishing process and surface roughness.
The LBO crystal is a structure of continuous reticular space arrangement of the (B3O7)-screw chain.
The structure of the crystal has boron oxygen anion group B3O7 and the cation Li distributes in the frame gap of the anion group [14].
According to the structure of LBO crystal, the cation Li of the first layer of c face is more than b face, and that of a face is less than b face.
Consequently, the different structure and atomic array of each crystal face result in the different mechanical and chemical reaction, and the different effect on MRR.
The LBO crystal is a structure of continuous reticular space arrangement of the (B3O7)-screw chain.
The structure of the crystal has boron oxygen anion group B3O7 and the cation Li distributes in the frame gap of the anion group [14].
According to the structure of LBO crystal, the cation Li of the first layer of c face is more than b face, and that of a face is less than b face.
Consequently, the different structure and atomic array of each crystal face result in the different mechanical and chemical reaction, and the different effect on MRR.
Online since: July 2011
Authors: Yan Ming Wang, De Ming Wang, Xiao Xing Zhong, Gou Qing Shi
Wavelet transformation is becoming increasingly more popular in analytical chemistry [4,5], where it has been applied in the feature extraction, noise suppression, data compression and classification of NIR spectra [6,7].
Wold, Orthogonal projections to latent structures, J.
Wold, Orthogonal projections to latent structures, J.
Online since: April 2012
Authors: S. Promdsorn, P. Chaiyasat, A. Chaiyasat
Chaiyasat1,a,*
1Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Klong 6, Thanyaburi, Pathumthani 12110, Thailand
aa_chaiyasat@mail.rmutt.ac.th
Keywords: Polymer Nanocomposite, Natural Rubber, Heterocoagulation
Abstract.
Introduction Polymer composite particles having heterogeneous structure such as core-shell can be produced by heterocoagulation technique.
Introduction Polymer composite particles having heterogeneous structure such as core-shell can be produced by heterocoagulation technique.
Online since: August 2012
Authors: Xin Dong, Jin Wang, Hui Wang, Zhi Feng Shi, Bao Lin Zhang
The crystal structure and orientation of the NiZnO films were characterized by XRD using SIEMENS D8 X-ray diffractometor in a θ- 2θ configuration with Cu Ka radiation.
Xie, The handbook of physics and chemistry vol.111(1985)
Xie, The handbook of physics and chemistry vol.111(1985)
Online since: November 2012
Authors: Yan Li, Hong Ju
Introduction
At present, the use of modern testing analytical tools and theoretical chemistry methods to research the structure-activity relationship of the mechanism of corrosion inhibitor and inhibitor molecules and guide the application of practice have become the development trend of the inhibitor scientific.
Online since: May 2011
Authors: Feng Tsai Weng, Chi Ting Ho, Fang Chang Hsu, Kuei Shu Hsu
Masuzawa, “Micro electro-discharge machining and its application”, Micro Electro Mechanical Systems, Proceedings, an Investigation of Micro Structures, Sensors, Actuators, Machines and Robots.
Wu, “Chemicl Machined Thin Foils of TiNi Shape Memory Alloy”, Materials Chemistry and Physics, 58, pp. 162-165. 1999
Wu, “Chemicl Machined Thin Foils of TiNi Shape Memory Alloy”, Materials Chemistry and Physics, 58, pp. 162-165. 1999