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Online since: March 2013
Authors: Qi Cheng Liu, Cong Li, An Ming Chen, Jun Feng, Tao Feng
And it breaks the card structure formed by kaolin particles in the shape of edge-face then releases some free water [15].
Because of the special structure of Kaolin that negative charges in layers and positive charges in edges.
When glaze slip is standing, the electric charges in layers and edges combine to space frame-like structure which also called card structure [17].
Hence, the ability to form a space frame-like structure again weakens.
[17] Nanjing institute of chemical, South China institute, Tsinghua University.Ceramic Physical Chemistry[(China Architecture and Building Press,China 1981),p.156-187.
Online since: May 2018
Authors: Kyung Nam Kim, Hellen Nalumaga, Won Duck Kim, Dong Ha Hwang
Crystal structure and crystallite size were investigated using powder X-ray diffraction (D/Max-2200, Rigaku).
The crystal structure of theZnO powders is shown in Figure 2.
The shapes of the particles of all the ZnO powders are almost similar, with a mixture of spherical, pentagon-like and hexagonal shaped structures.
The particle shapes of the ZnO nanoparticles were almost similar with a mixture of spherical, pentagon-like and hexagonal shaped structures.
Confer.on Synthetic Organic Chemistry, Multidisciplinary Digital Publishing Institute, 2013, pp. b019
Online since: March 2017
Authors: Soo Jin Tan, A.G. Supri, M.F. Abdullah, Kai Loong Foo, T.N. Atiqah
Result and Discussion XRD patterns display in Fig. 1 provided an insight to the effect of PANI on the graphite crystal structure.
This peak corresponding to the (200) plane having an orthorhombic structure.
PANI/G 1 composites exhibited a broad diffraction peak at 2θ=25.7° which indicating the PANI structure from partial crystal to amorphous by introducing a small amount of graphite into the PANI structure through solution method.
References [1] Sapurina, & Shishov, On the oxidative polymerization of aniline: molecular synthesis of polyaniline and the formation of supramolecular structure.
Journal of solid state chemistry. (2012) 300-313
Online since: July 2015
Authors: Ivan G. Lukitsa, Galina A. Nikolaychuk, Oleg Y. Moroz, Valeriy M. Smirnov
This band gap value corresponds to soft modification of a-C:H with 40-50% of hydrogen content and 60% fraction of sp3 hybridization in the material’s electronic structure [8,9].
O'Reilly, Electronic and atomic structure of amorphous carbon, Phys.
Vancu, Optical properties and electronic structure of amorphous germanium, Phys.
Ramsteiner, Plasma deposition, properties and structure of amorphous hydrogenated carbon films, Mater.
Brown, Magnetic Materials, Ch 8 in the Handbook of Chemistry and Physics, Condon and Odishaw, eds., McGraw-Hill, 1958.
Online since: September 2008
Authors: Shoichi Onda, Hideyuki Tsuboi, Jun Hasegawa, Norikazu Hosokawa, Akira Miyamoto, Hiromitsu Takaba, Emi Makino, Yasuo Kito, Megumi Kabasawa, Carlos A. Del Carpio, Nozomu Hatakeyama, Michihisa Koyama, Riadh Sahnoun, Seika Ouchi, Miki Sato, Momoj Kubo, Akira Endou
Moreover, we built models involving defects in the crystal structures, and investigated both their electronic structure and electrical conductivity features.
"Colors" program can be applied to calculate the electronic structure of large-scale and complex systems that are difficult to calculate with other computationally-expensive conventional first-principles methods.
Results and Discussion Before the computation for electrical conductivity, the electronic structures of the SiC polytype models have to be amalyzed.
These results show that our original tight-binding quantum chemical molecular dynamics program "Colors" can reproduce the electronic structure of SiC systems very well.
These outstanding results are obtained because of the precise information of the electronic structure for these SiC systems obtained from our original tight-binding quantum chemical molecular dynamics program "Colors".
Online since: September 2020
Authors: Wei Feng, Xian Shuai Chen, Jin Yang Zhang, Xiao Zhang
As an ideal bone tissue scaffold, not only the materials chemistry but also the three-dimensional (3D) porous structure is considered as a crucial role for bone regeneration [2, 3].
With Finite Element Analysis (FEA), the structure response and stress distribution pattern of porous structure under pressure can be easily simulated so the structure can be predesigned and optimized [7, 8].
In present study, two internal and external porous scaffolds structures with diamond lattice pore structure arraying units were modeled.
In particular, another 6 groups of internal porous structure scaffolds were designed for comparative analysis with 6 groups of external porous structure scaffolds (Fig. 1c).
The FEA method was employed to investigate the structure response and stress distribution and total deformation patterns of porous scaffolds with different porous structures and pore sizes.
Online since: June 2020
Authors: Avinash Parashar, Divya Singh
Tschopp et al. [4-5] has studied symmetrical and asymmetrical tilt grain boundary structures for Cu and Al.
GB structures were generated and their energies were calculated in MD based environment.
McDowell ,2007, Asymmetric tilt grain boundary structure and energy in copper and aluminium.
[6] Fatemeh Yazdandoost, Reza Mirzaeifar, 2017, Tilt grain boundaries energy and structure in Ni-Ti alloys.
Materials Chemistry and Physics, 235, 121729
Online since: April 2021
Authors: Olga Buslaeva, Sergey B. Sapozhnikov
PFR structure: general view (a) and fragment (b) Fig. 2.
Olsson, Impact on composite structures, The Aeronautical Journal, 108/1089 (2004) 541-563
Intelligent Material Systems and Structures, 23/12 (2012) 1371–1377
Bruns, Mechanical unfolding of a fluorescent protein enables self-reporting of damage in carbon-fibre-reinforced composites, Journal of Materials Chemistry A, 2/17 (2014) 6231-6237
Dai, Early damage detection in epoxy matrix using cyclobutane-based polymers, Smart Materials and Structures, 23/9 (2014) 095038
Online since: September 2017
Authors: Nurjahirah Janudin, Noor Azilah Mohd Kasim, Norli Abdullah, Luqman Chuah Abdullah, Faizah Md Yasin, Norshafiqah Mohamad Saidi
Acid treatment using Method C displayed the structure of MWCNT become agglomerates and layered.
The changes of MWCNT structure could be because MWCNT was exposed to high heat treatment for long hours of reaction time.
The oxidation of MWCNT breaks some of its bonds and inserts chemical groups that can be interpreted as defects on the structure.
These results indicate certain insertion of defects and/or break on the structure of MWCNT.
Raman analysis indicated the maintenance of the structure of MWCNT after carboxylation.
Online since: October 2018
Authors: Shigeaki Abe, Yasuhiro Yoshida, Satoshi Inoue, Yosuke Bando, Ko Nakanishi, Yuko Era, Eri Seitoku, Koichi Nakamura, Teruo Kusaka, Mariko Nakamura, Hidehiko Sano
For example, Shibata et al., reported that they prepared silica microparticles with spherical cavity structures using a sol-gel method.
Some drugs contain aromatic or aromatic hetrocyclic rings in thier chemical structure.
As shown in Figure 1(b), they have some nano-structure on their surface, Figure 1.
In addition, NPMSs have a large surface areas because of their nano-structures (as shown in Figure 2b), they can capture more large amount of cations compared with nano-/micro-sized sillica particles without nano-structures.
Iler, The Chemistry of Slica, Wiley, New York (1979).