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Online since: September 2016
Authors: Anthony J. Muscat, Pablo Mancheno-Posso, Yissel Contreras
In0.53Ga0.47As(100) epitaxial layers on InP substrates (1000 nm thick, undoped, IntelliEpi), were cut into 1 x 1.5 cm2 coupons and immersed for 1 min in 1:1:10000 v/v NH4OH:H2O2:H2O at room temperature, followed by a 1 min immersion in UPW.
For GaAs, the asymmetric methyl stretch is observed at 2960 cm-1, and the methylene stretches are found at 2918 cm-1 (asymmetric) and 2950 cm-1 (symmetric).
On In0.53Ga0.47As the asymmetric methyl stretch is observed at 2960 cm-1, and the methylene stretches are found at 2918 cm-1 (asymmetric) and 2950 cm-1 (symmetric), while on InSb, absorbance peaks at 2957 cm-1, 2925 cm-1, 2850 cm-1, and 2847 cm-1 are observed.
References [1] J. del Alamo.
Nature 479 (2011), p. 317
Online since: October 2009
Authors: Jun Ting Luo, Yan Xu, Shuang Jing Zhao
Finite Element Model and Experimental Method Extrusion deformation process was simulated by using finite element analysis software DEFORM with 1/4 model.
The finite element model is shown in Fig.1.
Parameters of material properties for pure copper and aluminum were shown in table 1.
References [1] H.J.
Lim..: Materials Science Forum, Vol. 475-479 (2005), pp.967.
Online since: August 2013
Authors: Rui Hong Yu, Ting Xi Liu, Rui Ying Hao
The average water level of the lake is 1018.5m, and the depth of the lake ranges from 0.5m to 3m, and the water depth of 80% of water area varies from 0.8 to 1.0m.
Fig. 1 Relationship of the reflection of various bands and their composition with water depth Fig. 1 shows that: when water depth is more than 1.2 meters, and increase with the depth; when water depth is less than 1.2 meters, and are stable; that is to say, and can reflect deep water characteristics.
The optimal model 1 and model 2 are established.
References [1] V.
International Journal of Remote Sensing Vol. 7(1991), p. 473- 479
Online since: July 2011
Authors: Wei Liu, Du Shu Huang, Zi Jing Li, Yong Min, Rui Min Xiao, Yan Jiang, Li Da Sun
The optimum conditions are: the amount ratio of Au: glyoxal is 1:1000; The pH of solution can be controlled between 8.2 to 8.4 by using 1.00 mol/L NaOH solution under 45℃{TTP}8451 .
It has been used In industry with a wide range [1].
Characterization of gold nanoparticles images using TEM shown in Figure 1.
References [1] Yao Ying,Li Min,Niu Yu lan.
JOURNAL OF CATALYSIS.133(1992) 479-485
Online since: May 2014
Authors: Jin Liang Zhang, Xue Li, Jing Rui Xu
(Fig.1).
Fig.1.
Conclusions (1) The main enrichment region of remaining oil is located nearby heavy oil belt and high structure position
References [1] H.Haiyan, W.Shuhong, Z.
Petroleum Science and Technology, 2014,32:479-487.
Online since: September 2011
Authors: Zhi Fa Wang, Li Xue Yu, Jing Long Bu, Rong Lin Wang
Introduction Literature [1] presumed that novel Zr-Al-O-N composites could be prepared by in situ reaction sintering between ZrO2 and AlN.
The samples of Al powders were coded as A-1, A-2 and A-3 respectively, and additives of CaF2, ZrB2 and MoSi2 were coded as CF, ZB and MS.
From fig.1 (c) we can also see, influencing effects of three additives on bending strength of Zr(Ca)-Al-O-N composites were not selfsame.
References [1] C.
Alloys and Compounds, 479 (2009), 599-602
Online since: September 2013
Authors: Hai Qing Liu, Hong Mei Fan, Jia Ren, Xiang Jun Meng, Xiu Bo Liu
The optimized laser processing parameters were: laser beam power of 1.2kW, beam size of 6 mm×3 mm and beam scanning speed of 6 mm/s.
Table 1 Experimental parameters of wear test Load (N) Temperature (℃) Wear time (min) Rotation radius (mm) Linear velocity (m·min -1) 5 25,300,600 20 2 16.889 Microstructure of the coatings The micrograph of the laser cladding coating is shown in Fig.1.
Fig. 1 Cross-section SEM micrographs of laser cladding NiCr/Cr3C2-10%WS2 coating Results of XRD analysis indicate that the major phases of the laser clad NiCr/Cr3C2 composite coating are Cr7C3 and TiC, while the laser clad NiCr/Cr3C2-10%WS2 coating consists of Cr7C3, TiC, CrS.
References [1]O.F.Ochonogor, C.
[2]Chuanbing Huang, Lingzhong Du, Weigang Zhang, Journal of Alloys and Compounds. 479(2009)777-784
Online since: April 2014
Authors: Guang Su Li, Jie Ding
Due to change the formula of the plating solution, the layer will have good rigidity after heat treatment[1-3].
All the formulas are listed in Table 1 to table3.
Results and discussion The influence of NiSO4·6H2O concentrations in plating solutions to the plated layer thickness and surface brightness are listed in table 1.From table 1, when the concentration of NiSO4·6H2O was 320g/L, the plating speed was quickest.
130 381 432 812 683 3 11.155 105 293 431 478 581 4 13.474 90 299 388 450 525 5 10.637 85 298 418 586 653 6 2.125 130 375 410 893 738 7 4.665 120 355 479 752 782 8 10.651 117 304 407 512 600 9 14.212 75 293 362 457 513 10 12.157 73 296 445 535 621 Fig.1 Abrasion width change of the plated layers by different testing time Fig.2 The layer surface of sample 6 before and after 200, 400, 600oC heat treatment (200×) Fig.3 XRD pattern of sample 6 before and after 200, 400, 600oC heat treatment From table 3, after 1h 400oC heat treatment the layers’ rigidity of sample1, sample2 and sample6 were over 800HV and sample 7 arrived 782HV after 1h 600oC heat treatment.
References [1] K.P.
Online since: April 2016
Authors: Shu Yu Zhong, Pei Song Tang, Ji Qi Jiang, Hai Shao Ye, Qian Yang
Fig. 1 XRD pattern of LaVO4 Morphology Analysis of LaVO4.
There were four characteristic peaks of the 440 cm-1, 795 cm-1, 1426 cm-1 and 3406 cm-1 in the Fig. 4.
The peaks around 3406cm-1 and 1626cm-1 were due to the O-H stretching vibrational mode of absorption. 795 cm-1 and 440 cm-1 should be the vibration peak of Fe-O and V-O bond.
Reference [1] S.
Jinénez-Mier: J Alloy Compd, Vol.479 (2009), p.511
Online since: February 2009
Authors: Chun Xu Pan, Fu Fang Zhou, Bao Gai Zhai, Zhuo Ran She, Yuan Ming Huang
Figure 1 shows the typical I-V curves of the polypyrrole palettes 1, 4, 5-8, respectively.
As described in Ref. [9], the slopes of the curves were calculated be 0.18, 0.18, 0.18, 0.52, 1.33, 16.3, 0.09 and 1.10 for the samples 1-8, and the conductivity of the eight samples were obtained to be 607, 479, 468, 135, 83, 10, 1680 and 251 S/m, respectively.
Fig. 1.
Particle size distributions of the powders of 1-8.
References [1] Y.M.
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