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Online since: September 2016
Authors: Sophia Arnauts, Dennis H. van Dorp, Frank Holsteyns, Graniel Abrenica
After the 130nm node, equivalent scaling based on judicious materials selection took over from dimensional scaling: straining the Si channel by means of epitaxial strained SiGe source and drain structures boosted mobility and hence drive currents (90-65 nm node), high-k oxides helped reducing gate leakage (65-45 nm node), Trigate or FinFET transistors allow better electrostatic control (22-10nm nodes).
Besides the striking similarity between Ge and III-As in HCl based chemistries, the etching control of the group IV semiconductor up to (sub) atomic-layer-scale shows that aqueous systems are excellent candidates for advanced CMOS processing.
Besides the striking similarity between Ge and III-As in HCl based chemistries, the etching control of the group IV semiconductor up to (sub) atomic-layer-scale shows that aqueous systems are excellent candidates for advanced CMOS processing.
Online since: July 2014
Authors: Hong Jing Jia, Cong Bin Fan, Ying Long Fu
Research on Photochromic Compounds with Synthesis and Properties of a Novel Unsymmetrical Diarylethene with a Benzothiophene and a Pyrrole Group
Hongjing Jia, Yinglong Fu and Congbin Fan *
Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University,
Nanchang 330013, P.
The structure of compound 1o was confirmed by 1H NMR spectroscopy.
The structure of compound 1o was confirmed by 1H NMR spectroscopy.
Online since: September 2013
Authors: Torranin Chairuangsri, John T.H. Pearce, Amporn Wiengmoon, Pattama Apichai
Pearce3,c
and Torranin Chairuangsri4,d
1Department of Physics, Faculty of Science, Naresuan University, Phitsanulok, 65000, Thailand
2Faculty of Science, Lampang Rajabhat University, Lampang, 52100, Thailand
3National Metal and Materials Technology Center, Pathumthani, 12120, Thailand
4Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50202, Thailand.
OM images compare the microstructure of eutectic structure: (a) as-cast condition, (b) after solution treatment and (c) after solution treatment plus aging at 170°C for 24 hours.
OM images compare the microstructure of eutectic structure: (a) as-cast condition, (b) after solution treatment and (c) after solution treatment plus aging at 170°C for 24 hours.
Online since: March 2013
Authors: Jayabharathi Jayaraman, Jayamoorthy Karunamoorthy
Sensing nanoparticulate ZnO with benzimidazole derivative by fluorescence
Jayabharathi Jayaraman1,a and Jayamoorthy Karunamoorthy1
1Department of Chemistry, Annamalai University, Annamalainagar 608 002, India
aEmail: jtchalam2005@yahoo.co.in
Keywords: Sensor, SEM, EDX, Impedance, Fluorescence
Abstract
A sensitive benzimidazole derivative fluorescent sensor for nanoparticulate ZnO has been designed and synthesized.
The crystal structures of undoped and doped ZnO are primitive hexagonal with crystal constants a and b as 3.249A° and c as 5.025 A°.As there is no change in the crystal parameters on doping ZnO with silver, the larger Ag+ (radius 1.22 A°) cannot be incorporated in the ZnO lattice; the radius of Zn2+ is 0.72 A°.
The crystal structures of undoped and doped ZnO are primitive hexagonal with crystal constants a and b as 3.249A° and c as 5.025 A°.As there is no change in the crystal parameters on doping ZnO with silver, the larger Ag+ (radius 1.22 A°) cannot be incorporated in the ZnO lattice; the radius of Zn2+ is 0.72 A°.
Online since: March 2012
Authors: Shou Zhi Pu, Hui Li, Xiao Ting Li
Photochromic, Kinetics, and Fluorescence of A Novel Diarylethene
Xiaoting Li, Shouzhi Pu* and Hui Li
Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University
Nanchang 330013, P.R.
The structure of compound 1o was characterized by 1H NMR spectroscopy. 1H NMR (400 MHz, CDC13): δ 1.04 (t, 3H, -CH3),2.26 (d, 6H, -CH3), 2.53-2.62 (m, 2H,-CH2-), 6.75 (s, 1H, thiophene-H), 7.40-7.43 (m, 2H, Ar-H), 7.47-7.49 (d,1H, J = 7.6 Hz, Ar-H),7.56-7.58 (d, 1H, J = 7.6 Hz, Ar-H).
The structure of compound 1o was characterized by 1H NMR spectroscopy. 1H NMR (400 MHz, CDC13): δ 1.04 (t, 3H, -CH3),2.26 (d, 6H, -CH3), 2.53-2.62 (m, 2H,-CH2-), 6.75 (s, 1H, thiophene-H), 7.40-7.43 (m, 2H, Ar-H), 7.47-7.49 (d,1H, J = 7.6 Hz, Ar-H),7.56-7.58 (d, 1H, J = 7.6 Hz, Ar-H).
Online since: March 2012
Authors: Cun Jing Wang, Li Zhang
The catalytic properties of the anodic aluminum oxide template in synthesis of carbon nanotubes
Li Zhang1,a and Cunjing Wang1,b
College of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China
bemail: wangcunjing@126.com
Keywords: Carbon nanotubes; Chemical vapor deposition; anodic aluminum; template
Abstract.
Jeong [6] also showed that CNTs synthesized by the pyrolysis of C2H2 at 650℃ in an AAO template with or without Co catalysts had the same tube wall structures consisting of numerous stacked carbon flakes, instead of straight coaxial cylindrical graphitic units.
Jeong [6] also showed that CNTs synthesized by the pyrolysis of C2H2 at 650℃ in an AAO template with or without Co catalysts had the same tube wall structures consisting of numerous stacked carbon flakes, instead of straight coaxial cylindrical graphitic units.
Online since: April 2014
Authors: Xiao Meng, Xian Bing Wu, Wu Qun Cheng
To achieve this aim, the author first grasp the content level, weight and internal relation, based on the teaching content of priorities and students' knowledge structure, centering on the syllabus, teaching " draw in Pyramid ".
[2] Cheng Sikun, Xin Chunyan, Liu Peng and He We: Analysis of Gradual Pedagogy in Analytical Chemistry Teaching.
[2] Cheng Sikun, Xin Chunyan, Liu Peng and He We: Analysis of Gradual Pedagogy in Analytical Chemistry Teaching.
Online since: August 2010
Authors: C.W. Cheng, J.S. Chen, P.X. Lee, C.W. Chien
Top view Side view
1.5mm
0.13mm
0.13mm
(a)
0.5 mm
(b)
0.5 mm
A
(c)
10 um
(d)
Fig. 8: (a) Schematic illustration of a U-shaped microchannel, (b)-(c) top view and incline view
microscope images of the fabricated microchannel, and (d) magnified view of the area A of Fig. 8(c)
Side view
2mm
0.2mm
0.2mm
Top view
(a)
200 um
B
(b)
20 um
(c)
Fig. 9: (a) Schematic illustration of a arc-type microchannel, (b) top view microscope images of the
fabricated microchannel filled with red ink, and (c) magnified view of the area B of Fig. 9(b)
Conclusions
The experimental results showed that microstructure sizes of less than 10 µm can be fabricated
on the surface and inside the photosensitive glass by using a femtosecond laser direct write
manufacturing process followed by heat treatment and chemical etching in an HF solution. 3D
microchannel structures were fabricated inside the photosensitive glass, a process which could be
applied in
the fields of biotechnology and micro-fluidics for chemistry in the future.
the fields of biotechnology and micro-fluidics for chemistry in the future.
Online since: May 2010
Authors: Ye Fei Li, Fang Yu Li, Jiang Hui, Fang Huang
Technical Design
Structure Design
Detail Design
Concept Design
Anthropometry
Ergonomic
Centered Design
Product Design
Comfort Model Experiments
Regression
Fig. 1 Design Strategy based on Anthropometry
To design ergonomic-centered products, all sizes concerned with human should be determined by
the customers.
Ergonomics in Product Design, Beijing: Chemistry Industry Press (2004) [6] DING Yulang.
Ergonomics in Product Design, Beijing: Chemistry Industry Press (2004) [6] DING Yulang.