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Online since: May 2012
Authors: Jean Camassel, Konstantinos Zekentes, Hervé Peyre, Katerina Tsagaraki, Maria Kayambaki, Antonis Stavrinidis, Maria Androulidaki
SIMS (continuous line) and ECV (dotted line) profile from an Al-implanted 6H-SiC sample.
All spectra exhibit an edge luminescence (EL) peak at 391nm and a green-yellow (GYL) band around 570 nm, which according to the bibliography is related to residual doping and particularly to boron.
Note that the intensity ratio between the EL and the GYL peaks is higher for the as-post-implantation-annealed sample in comparison to the as-grown one.
The as-implanted sample AGP4A presents an “attenuated” spectrum (Fig. 5 middle) in comparison to the as-grown one with a higher attenuation for the EL peak.
This is observed for all as-implanted samples whatever the implanted species (Al, N) and/or the polytype (4H-, 6H-).
Online since: March 2006
Authors: Chang Seung Lee, Jun Hyub Park, Yun Jae Kim
A material to be tested, Al-3%Ti is deposited as shown in Fig. 2(b).
Spring Parts • material : Al-3%Ti Body Parts Spring Parts • material : Al-3%Ti Spring Parts • material : Al-3%Ti Body Parts Fig. 1 Schematic illustration of a RF MEMS switch for a mobile phone.
Fig. 6 The micron-sized Al-3%Ti thin film specimen before and after tensile test.
Fatigue test results of the Al-3%Ti thin film.
Gad-El-Hak and Mohamed Gad-El-Hak: The MEMS handbook CRC press (2001) Table 1 Geometry of specimen tested in the present work No.
Online since: October 2012
Authors: Jun Peng, Guan Rong, Zhi Lin Li
One is the sand slate part which is above the elevation of (EL.) 1820 m, and the other is the marble part which is below EL. 1820 m.
The model is consisted of sand slate in the third segment of Zagunao group which is above EL. 1850 m and marble in the second segment of Zagunao group which is below EL. 1850 m.
It located in EL. 1800 m.
After excavation of the third stage, the interior boundary of EDZ above EL. 1880 m is close to Lamprophyre X and the interior boundary of EDZ below EL. 1880 m is close to fault f42-9.
Ding, et al.
Online since: December 2007
Authors: Rui Li Song, Yu Duan
Finally a LiF buffer layer and Al cathode were deposited at a background pressure of 10 -4 Pa onto the organic films.
All measurements were carried out at room temperature under ambient conditions. 400 500 600 700 EL Intensity (a.u.)
Fig. 3 shows the EL spectra of ITO/NPB(40 nm)/ CBP: Ir(ppy)3: Ir(piq)2(acac) (30 nm)/TPBI(50 nm)/LiF(0.8 nm)/Al with various doping concentrations of Ir(ppy)3 and Ir(piq)2(acac).
The structure of devices is ITO/NPB(40 nm)/ CDBP:Firpic /CBP: Ir(ppy)3: Ir(piq)2(acac) /TPBI (50 nm)/LiF(0.8 nm)/Al.
Figure 4 shows the EL spectra of the WOLEDs with configuration of ITO/NPB(40 nm)/ CDBP:FIrpic (10 nm) /TPBI (4 nm)/CBP: Ir(ppy)3: Ir(piq)2(acac) (20 nm)/TPBI (50 nm)/LiF(0.8 nm)/Al under various operating voltage.
Online since: October 2006
Authors: Le Hua Qi, Ji Ming Zhou, Guo Ding Chen
Hyperbolic sine constitutive equation (HSCE) J.M.Zhou et al[7] reviewed the constitutive relationship of material forming in high temperature and discussed what situation they can be used to thoroughly.
(2) 2 el el ij ij kk ij σ βδε µε = +& & &
The following equation can be derived from Eq. 3: 2 el ij ijS eµ=& &
(5) where ijS& is deviatoric stress rate, and el ije& is deviatoric elastic strain rate.
Chen et al: Journal of Plasticity Engineering Vol. 12 (2005), p. 58
Online since: July 2012
Authors: Zhi Jian Peng, Tian Ling Ren, Dan Xie, Cheng Peng
From the recorded E-J curves, electrical parameters were calculated, which were defined as following: leakage current IL, current density at a field strength of 10 V/mm; field strength EL, field strength at a current density of 1 μA/cm2; nonlinearity coefficient aL, nonlinearity coefficient at 1 μA/cm2; breakdown field strength EB, field strength at a current density of 0.13 mA/cm2; breakdown nonlinearity coefficient aB, nonlinearity coefficient at 0.13 mA/cm2.
From this figure, it can be seen that with increasing sintering temperature from 1035 to 1175 °C, the nonlinear coefficients of the samples (both of nonlinearity coefficient aL and breakdown nonlinearity coefficient aB) generally increased, but the samples prepared at 1145 or Fig. 3 Electrical parameters of the samples prepared by different sintering systems: (a) nonlinearity coefficient aL, (b) field strength EL, (c) breakdown nonlinearity coefficient aB, (d) breakdown field strength EB, and (e) leakage current IL. 1175 °C almost presented the same value of nonlinear coefficients, implying that the optimum sintering temperature for the varistors with the as-proposed compositions may not be higher than 1145 °C.
Fu, et al: J.
Wang, et al: Acta Metall.
Gauckler, et al: Key Eng.
Online since: January 2019
Authors: Fa Gen Li, An Qing Fu, Xun Ji Li, Xian Ming Li, Ze Liang Chang, Quan Feng
[12] Pan Xu, et.al.
Han, at el.
[24] Singh, B., et al.
[25] Li Helin, et.al.
[26] Li Fagen, et.al.
Online since: December 2012
Authors: Wen Jie Ren, Zhi Cheng Ma, Zhi Qiang Wang
El-Dakhakhni et al [7] presented a simple method of estimating the stiffness and the lateral load capacity of masonry-infilled steel frames failing in corner crushing mode, as well as the internal forces in the steel frame members.
In the El-Dakhakhni’s method , each masonry panel was replaced by three struts with force-deformation characteristics based on the orthotropic behavior of the masonry infill.
Ehsani et al [8] used the vertical composite strips to retrofit the brick walls of the unreinforced masonry buildings.
[7] El-Dakhakhni W W, Elgaaly M and Hamid A A.
[9] Almusallam T H and Al-Salloum Y A.
Online since: November 2011
Authors: Wei Cao, Wen Juan Wang, Rui Wang
The dividing space distance (DS) was calculated as Eq. 2, Cl is defined as the maximum value of the residuals and CS is defined as the minimum value of the residuals, DS= (CL-CS) / 5=0.1526 (2) Then the state space was divided into five states, which is showed in Table 1, Table 1, State Space Division state space EL ES S1 EL(1)= CL ES(1)= CL -DS S2 EL(2)= CL - DS ES(2)= CL -3* DS S3 EL(3)= CL -3* DS ES(3)= CL -3.6* DS S4 EL(4)= CL -3.6*DS ES(4)= CL -3.7* DS S5 EL(5)= CL -3.7* DS ES(5)= CL -5* DS The division of the state space depends on the people’s experience, which affects prediction accuracy.
Wu, et al, Wear Characterization by On-Line Ferrograph Image.
Online since: August 2019
Authors: H. Shivananda Nayaka, S. Ramesh
El et al investigated wear behavior, of ECAP processed Al-Cu alloy, under dry sliding condition.
Manjunath et al [10] conducted dry sliding wear tests on Al-Zn-Mg alloy (5%, 10% and 15%Zn with 2 %Mg) processed by ECAP.
[6] A.El, M.
A, El Mahallawy, N.Shehata, F.
A.El Hameed, M.
Showing 681 to 690 of 9913 items