Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: December 2011
Authors: Jia Li Ding, Wen Wu
The structure of the sericin-based silver nanoparticles is characterized by TEM.
It is most the Tyr residues which act as reducing agent in the reduction course of Ag+ according to the molecular structure and content of amino acids.
The ionization of the phenolic group (Scheme 1) enables facile electron transfer from the phenolate ion to the silver cations, resulting in the formation of silver nanoparticles, the phenolate ions being converted into a semi-quinone type of structure concomitantly (Scheme 1).
Pearce, Handbook of Fiber Chemistry, 2nd ed., New York: Marcel Dekker, 1998 [10] Q.
It is most the Tyr residues which act as reducing agent in the reduction course of Ag+ according to the molecular structure and content of amino acids.
The ionization of the phenolic group (Scheme 1) enables facile electron transfer from the phenolate ion to the silver cations, resulting in the formation of silver nanoparticles, the phenolate ions being converted into a semi-quinone type of structure concomitantly (Scheme 1).
Pearce, Handbook of Fiber Chemistry, 2nd ed., New York: Marcel Dekker, 1998 [10] Q.
Online since: August 2014
Authors: De Qing Liang, Dong Liang Li, Cui Ping Tang
After structure optimization, the following combined inhibitor structure is adopted in fig. 1.
The simulation set up consists of one unit cell of hydrate of structure I filled with a model for methane.
Oxygen atoms in ring groups form hydrogen bonds with water molecules of the cage, which make this structure stable.
So originally ordered structure after adding the inhibitors become disordered.
Science in China Series B: Chemistry, Vol. 53(2010), p.2622 [16].
The simulation set up consists of one unit cell of hydrate of structure I filled with a model for methane.
Oxygen atoms in ring groups form hydrogen bonds with water molecules of the cage, which make this structure stable.
So originally ordered structure after adding the inhibitors become disordered.
Science in China Series B: Chemistry, Vol. 53(2010), p.2622 [16].
Online since: June 2007
Authors: Sun Il Mho, Mi Jung, Sun Ho Kim, Deok Ha Woo, Young Tae Byun, Young Min Jhon, Seok Lee
Fabrication of Size Controlled Nanohole Array on III-V Semiconductor
substrate by ICP-RIE using Nanoporous Alumina Mask
Mi Jung
1, Seok Lee
1, Young Tae Byun
1, Young Min Jhon1, Sun Ho Kim
1,
Sun-il Mho2, and Deok Ha Woo1a
1
Photonics Research Center, Korea Institute of Science and Technology, Seoul 130-650, Korea
2
Department of Chemistry, Ajou University, Suwon 443-749, Korea
a
Corresponding author: Dockha@kist.re.kr
Keywords: Nanohole, III-V Semiconductor, Nanoporous Alumina Mask, ICP-RIE
Abstract.
The unique structure of nanoporous alumina was directly used as an etching mask for pattern transfer into the GaAs substrate.
Also, the structure of nanoporous alumina has examined as a transfer mask for pattern of nanometer size into the semiconductor substrates [6-9].
The unique structure of nanoporous alumina was directly used as a mask for pattern transfer into the GaAs substrate.
The unique structure of nanoporous alumina was directly used as an etching mask for pattern transfer into the GaAs substrate.
Also, the structure of nanoporous alumina has examined as a transfer mask for pattern of nanometer size into the semiconductor substrates [6-9].
The unique structure of nanoporous alumina was directly used as a mask for pattern transfer into the GaAs substrate.
Online since: November 2012
Authors: Fei Wang, Ying Chao Ji, Hong Li, Ying Wang
The chemical structure of the hemp cellulose ether was characterized by the FTIR analysis.
In order to investigate the chemical structure of the cellulose ether, the FTIR measurement was carried out.
The chemical structure of hemp cellulose ether was characterized by the FTIR analysis.
Fibre Chemistry.
In order to investigate the chemical structure of the cellulose ether, the FTIR measurement was carried out.
The chemical structure of hemp cellulose ether was characterized by the FTIR analysis.
Fibre Chemistry.
Online since: August 2009
Authors: Zhi Xiong Huang, Chuan Ji Zhang
The effect of monomer structure
and mechanical properties has been investigated on the prepared polyesters and is also compared
with that of the analogous polyester by other processing mode.
It is noted that a similar flow effect is observed in various polyolens in which flow aligned stretched chains nucleate and crystallize in an oriented shish-kebab structure[4,5].
Chivers and Moore[8] had found that the change in chemistry had little effect on the stiffness properties, but the addition of glass fiber reduced the in-plane stiffness anisotropy.
As can be seen in the 10% FB composite of Fig. 2a, both thin and small fibrils, and some flat structures,were present.
In the composite with 30% FB and in the rest of the blends, as seen in Fig. 2b, the FB formed large and rather oriented structures.
It is noted that a similar flow effect is observed in various polyolens in which flow aligned stretched chains nucleate and crystallize in an oriented shish-kebab structure[4,5].
Chivers and Moore[8] had found that the change in chemistry had little effect on the stiffness properties, but the addition of glass fiber reduced the in-plane stiffness anisotropy.
As can be seen in the 10% FB composite of Fig. 2a, both thin and small fibrils, and some flat structures,were present.
In the composite with 30% FB and in the rest of the blends, as seen in Fig. 2b, the FB formed large and rather oriented structures.
Online since: March 2007
Authors: Jia Dao Wang, Da Rong Chen, Feng Bin Liu, Bing Liu
Moreover, the most stable structure of the hydride diamond (100)
surface was obtained.
Among the three orientations, (100) surface is of particular interest because of its atomically smooth roughness and rich surface chemistry with two dangling bonds to one surface carbon atom [6,7].
Hamza, Kubiak and Stulen [8] observed the polished diamond (100) surface by means of LEED and noticed that it displays (1×1) structure, and then converts into (2×1) structure as the temperature increases.
Otherwise, the structure of the product is more stable.
So the parallel 1×1:1.5H geometry is a more favorable structure than vertical 1×1:1.5H.
Among the three orientations, (100) surface is of particular interest because of its atomically smooth roughness and rich surface chemistry with two dangling bonds to one surface carbon atom [6,7].
Hamza, Kubiak and Stulen [8] observed the polished diamond (100) surface by means of LEED and noticed that it displays (1×1) structure, and then converts into (2×1) structure as the temperature increases.
Otherwise, the structure of the product is more stable.
So the parallel 1×1:1.5H geometry is a more favorable structure than vertical 1×1:1.5H.
Online since: August 2021
Authors: Victor Koledov, Peter Lega, Svetlana von Gratowski, Zoya Kosakowskiya, Andrey Orlov, Monica A. Cotta
Therefore, by analogy with self-assembling both in living nature and in chemistry, this method of creating nano-devices can be called „mechanical bottom up nano-assembling“.
Pure and Applied Chemistry 82.12 (2010): 2295-2314
Accurate placement of single nanoparticles on opaque conductive structures.
Smart materials and structures, 21(5), 052001
Structure and Morphology of Zinc Oxide Nanorods. (2018) Journal of Communications Technology and Electronics, 63 (1), pp. 75-79
Pure and Applied Chemistry 82.12 (2010): 2295-2314
Accurate placement of single nanoparticles on opaque conductive structures.
Smart materials and structures, 21(5), 052001
Structure and Morphology of Zinc Oxide Nanorods. (2018) Journal of Communications Technology and Electronics, 63 (1), pp. 75-79
Online since: March 2016
Authors: Yan Hui Zhang, Gao Wu Qin, Xing Kui Wang, Cheng Yao
Preparation and Characterization of Amorphous Fe-B-P Ultrafine Particles
Yanhui Zhang1, a, Xingkui Wang1, Cheng Yao2 and Gaowu Qin2, b*
1Institute of Material Physics and Chemistry, Northeastern University, Shenyang 110819 China
2Key Laboratory for Anisotropy and Texture of Materials(MoE), Northeastern University,
Shenyang 110819 China
ayhzhang@imp.neu.edu.cn, bqingw@smm.neu.edu.cn
Keywords: Fe-B-P, Aqueous reduction method, Amorphous particles, Mössbauer spectrum, Hyperfine Structure
Abstract.
Soft magnetic Fe-B-P ultrafine particles with amorphous structure were prepared by aqueous reduction method with variable pH values.
However, the detailed magnetic structure of Fe-B-P particles has not been well understood.
Soft magnetic Fe-B-P ultrafine particles with amorphous structure were prepared by aqueous reduction method with variable pH values.
However, the detailed magnetic structure of Fe-B-P particles has not been well understood.
Influence of Al2O3 Addition on the Temperature Dependence of Initial Permeability of NiCuZn Ferrites
Online since: July 2011
Authors: Taku Murase, Hidenobu Umeda, Shin Takane, Takuya Aoki
Fig.3 EPMA elemental maps of sample A and D
Al2O3 dissolved in the NiCuZn ferrite grains may change the magnetocrystalline anisotropy or magnetic domain structure.
The presence of Al2O3 in the NiCuZn ferrite grains also influences the magnetic domain structure because the temperature dependence of Kd changes only after the addition of Al2O3.
In a future study, we plan to investigate the magnetic domain structure and magnetization process with the help of a Lorentz microscope.
Sawant: Materials Chemistry and Physics Vol. 46 (1996), p. 96
The presence of Al2O3 in the NiCuZn ferrite grains also influences the magnetic domain structure because the temperature dependence of Kd changes only after the addition of Al2O3.
In a future study, we plan to investigate the magnetic domain structure and magnetization process with the help of a Lorentz microscope.
Sawant: Materials Chemistry and Physics Vol. 46 (1996), p. 96
Online since: February 2008
Authors: Shi Gang Long, Feng Cao, Liu Heng Sun, Qing Min Meng
Study on Alumina Ceramics for Dechlorinating Reactor Lining
Shigang Long1, Feng Cao
2, Liuheng Sun1 and Qingmin Meng1
1
School of Metallurgy and Materials, Anhui University of Technology, Maanshan 243002, China
2
Department of Chemistry, Huzhou Teachers College, Huzhou 313000, China
Keywords: Alumina ceramics, Corrosion, Hydrochloride, Thermal shock
Abstract.
An Al2O3-based ceramics was developed to meet the demands of the dechlorinating reactor lining by the control of chemical composition and grain structure.
It can be seen from Fig.1 that the morphological structure (a) Without HCl corrosion (b) After HCl corrosion Fig.1 SEM of the fracture surface of Al2O3 ceramics sample 1 of the samples has changed oblivious after HCl corrosion.
(a) Without HCl corrosion (b) After HCl corrosion Fig.2 SEM of the fracture surface of Al2O3 ceramics sample 4 From Fig.2(a) and Fig.2(b) we found the morphological structure of the sample 4 has no the obvious change after HCl corrosion.
An Al2O3-based ceramics was developed to meet the demands of the dechlorinating reactor lining by the control of chemical composition and grain structure.
It can be seen from Fig.1 that the morphological structure (a) Without HCl corrosion (b) After HCl corrosion Fig.1 SEM of the fracture surface of Al2O3 ceramics sample 1 of the samples has changed oblivious after HCl corrosion.
(a) Without HCl corrosion (b) After HCl corrosion Fig.2 SEM of the fracture surface of Al2O3 ceramics sample 4 From Fig.2(a) and Fig.2(b) we found the morphological structure of the sample 4 has no the obvious change after HCl corrosion.