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Online since: October 2006
Authors: Kee Suk Nahm, Eun Kyung Suh, Sang Kwon Lee, Nam Kyu Cho, Han Kyu Seong, Heon Jin Choi, Ki Chul Choi
Introduction
One dimension semiconductor nanowires provide a good system to investigate the dependence of
electrical and thermal transport or mechanical properties on dimensionality and size reduction or
quantum confinement effects [1, 2].
(a) SEM image of single GaN nanowire, (b) Gate voltage dependent ID-VSD data recorded on single GaN nanowire (80 nm radius, 3.1 μm length) shown in Fig. 3(a).
-3 -2 -1 0 1 2 3 -10 -5 0 5 10 ID Drain current (μA) VSD Source-drain voltage (V) Gate voltage (VG) +30V +20V +10V 0V -10V -20-100 102030 8.0 8.2 8.4 8.6 8.8 9.0 9.2 2.94 2.96 2.98 3.00 VSD ID Drain current (μA) VG Gate voltage (V) -4 -3 -2 -1 0 1 2 3 4 -6 -4 -2 0 2 4 6 1.45x10-8 A/V dID/dVG Fitting data Slope μ(c/L2) dID/dVG (x 10 -8 A/V) VSD Source-drain voltage (V) (b) (a) (c) (d) 1 μm
(a) SEM image of single GaN nanowire, (b) Gate voltage dependent ID-VSD data recorded on single GaN nanowire (80 nm radius, 3.1 μm length) shown in Fig. 3(a).
-3 -2 -1 0 1 2 3 -10 -5 0 5 10 ID Drain current (μA) VSD Source-drain voltage (V) Gate voltage (VG) +30V +20V +10V 0V -10V -20-100 102030 8.0 8.2 8.4 8.6 8.8 9.0 9.2 2.94 2.96 2.98 3.00 VSD ID Drain current (μA) VG Gate voltage (V) -4 -3 -2 -1 0 1 2 3 4 -6 -4 -2 0 2 4 6 1.45x10-8 A/V dID/dVG Fitting data Slope μ(c/L2) dID/dVG (x 10 -8 A/V) VSD Source-drain voltage (V) (b) (a) (c) (d) 1 μm
Online since: April 2010
Authors: Alfonso Maffezzoli, Carola Corcione, Antonio Greco
The raw data of Figure 2 were
then used to calculate the water vapour permeability according to Eq. (1).
The water vapor permeability of PETg/omMMT nanocomposites (Ps) normalized to permeability of unfilled PETg (Pp) is reported in Figure 3 as a function of the omMMT volume fraction (Φ). 0.88 0.90 0.92 0.94 0.96 0.98 1.00 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 PETg/omMMT nanocomposites experimental data Bharadwaj model prediction Ps/Pp 1-Φ Figure 3: Water vapor permeability of PETg/omMMT nanocomposites (Ps) normalized to permeability of unfilled PETg (Pp) versus omMMT volume fraction (Φ).
The introduction of an impervious inorganic phase that increases the tortuosity of the path of a low molecular weight penetrant permeating through the nanocomposite, is responsible of a water vapour permeability reduction.
The water vapor permeability of PETg/omMMT nanocomposites (Ps) normalized to permeability of unfilled PETg (Pp) is reported in Figure 3 as a function of the omMMT volume fraction (Φ). 0.88 0.90 0.92 0.94 0.96 0.98 1.00 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 PETg/omMMT nanocomposites experimental data Bharadwaj model prediction Ps/Pp 1-Φ Figure 3: Water vapor permeability of PETg/omMMT nanocomposites (Ps) normalized to permeability of unfilled PETg (Pp) versus omMMT volume fraction (Φ).
The introduction of an impervious inorganic phase that increases the tortuosity of the path of a low molecular weight penetrant permeating through the nanocomposite, is responsible of a water vapour permeability reduction.
Online since: July 2007
Authors: Oh Hyeong Kwon, Chang Hyun Ahn, Kwan Han Yoon, Young Gwang Ko, Hyeon Ae Jeon, Young Chul Kim, Young Jin Kim
(data not shown) The amounts of
PIPAAm-grafted onto PHBV films and mats, which were determined by comparison with ATR-FTIR standard curves, were 6.49 and 6.52 µg/cm2, respectively, consistent with high surface
content.
(data not shown) This result indicates that PIPAAm surfaces, which are hydrophobic at the higher temperature, became markedly more hydrophilic in response to a temperature reduction due to spontaneous hydration of surface-grafted PIPAAm. 2000 1800 1600 1400 1200 1000 ester 1720 cm-1 Amide I 1650 cm-1 Wavenumber (cm-1) a) b) 2000 1800 1600 1400 1200 1000 ester 1720 cm-1 Amide I 1650 cm-1 Wavenumber (cm-1) a) b) Figure 2.
(data not shown) This result indicates that PIPAAm surfaces, which are hydrophobic at the higher temperature, became markedly more hydrophilic in response to a temperature reduction due to spontaneous hydration of surface-grafted PIPAAm. 2000 1800 1600 1400 1200 1000 ester 1720 cm-1 Amide I 1650 cm-1 Wavenumber (cm-1) a) b) 2000 1800 1600 1400 1200 1000 ester 1720 cm-1 Amide I 1650 cm-1 Wavenumber (cm-1) a) b) Figure 2.
Online since: June 2004
Authors: B. Daudin, Eva Monroy, J. Brault, N. Gogneau, F. Enjalbert, E. Bellet-Amalric, Le Si Dang, F. Fossard, Sylvain Monnoye, Hugues Mank
Note that best
values of FWHM are obtained for GaN with N-polarity, and they compare favorable to data in
literature on SiC [6].
On the other hand, the emission is more intense for N-polar GaN than for Ga-polar material, which suggests a reduction in the density of non-radiative recombination centers.
HRXRD and PL data show that high structural quality is achieved in both polarities.
On the other hand, the emission is more intense for N-polar GaN than for Ga-polar material, which suggests a reduction in the density of non-radiative recombination centers.
HRXRD and PL data show that high structural quality is achieved in both polarities.
Online since: April 2012
Authors: Mohd Zakaria Mohammad Nasir, Mohd Zubir Amir, Khisbullah Hudha, Faizul Akmar Abdul Kadir
Through mathematical models, the dynamic behaviour of the specific vehicle model can be investigated via simulation tool without the need of real test which resulting much faster development time, variable data testing as well as cost reduction.
Fig. 2: Vehicle model in MATLAB SIMULINK environment Model Validation Results The accuracy of results obtained from simulations depends on the realism of the model where measured data used to define the model parameter.
Fig. 2: Vehicle model in MATLAB SIMULINK environment Model Validation Results The accuracy of results obtained from simulations depends on the realism of the model where measured data used to define the model parameter.
Online since: November 2005
Authors: Wisessint Attaporn, Kazuto Nishida, Hideo Koguchi
During this process, heat or mechanical
loading applied to the bonding part of COG may cause a large stress, strain and deflection, which are
key factors causing a reduction in the reliability of electric devices.
Firstly, Young's modulus and yield strength for the nickel were determined in the same manner as the experimental data and are shown in Table 1.
The results of the FEM for contact force, shape of ACF interconnection and elastic recovery agreed well with the experimental data.
Firstly, Young's modulus and yield strength for the nickel were determined in the same manner as the experimental data and are shown in Table 1.
The results of the FEM for contact force, shape of ACF interconnection and elastic recovery agreed well with the experimental data.
Online since: June 2015
Authors: V.A. Soltamov, Vladimir Dyakonov, Dmitrij Simin, Stefan Vaeth, Andreas Sperlich, Pavel Baranov, Hannes Kraus, Franziska Fuchs, G. Astakhov
The experimental data are perfectly described by the spin Hamiltonian with S = 3/2 and corresponding transition rates [8], as shown by the solid lines in Fig. 3(a).
In contrast to VSi(V2) and VSi(V3), for the Frenkel pair VSi-Sii we observe a reduction of its zero-field splitting of ca. 50%, from 0.6 down to 0.3 GHz when the temperature increases from 10 to 320 K.
Experimental data are shown by symbols, the solid and dotted lines correspond to the calculations for S = 3/2 and S = 1, respectively.
In contrast to VSi(V2) and VSi(V3), for the Frenkel pair VSi-Sii we observe a reduction of its zero-field splitting of ca. 50%, from 0.6 down to 0.3 GHz when the temperature increases from 10 to 320 K.
Experimental data are shown by symbols, the solid and dotted lines correspond to the calculations for S = 3/2 and S = 1, respectively.
Online since: July 2014
Authors: Wei Ma
During construction of large-scale construction project, the technical risk assessment is often lack of necessary historical data and faces the problem of “inadequate and deficient information”: technology is neither clear nor certain in itself, it has a portion of known information and a portion of unknown information; the solution of technical risk assessment is featured by differentiation and non-uniqueness and the experience, identification ability and cognitive level of human being are also limited.
Seen from the data in Table 4, the maintainability, technical compatibility and intellectual property right protection of technical risk of this large-scale construction project are in or on the verge of the “high risk” grey cluster, so these aspects still need close follow-up and it is necessary to pay close attention to them during construction for further reduction of technical risk.
Seen from the data in Table 4, the maintainability, technical compatibility and intellectual property right protection of technical risk of this large-scale construction project are in or on the verge of the “high risk” grey cluster, so these aspects still need close follow-up and it is necessary to pay close attention to them during construction for further reduction of technical risk.
Online since: July 2012
Authors: Zhi Gang Wei, Guang Hui Hu, Xin Long Tian, Chu Min Xiao, Zhan Chang Pan, Shou Kun Wu, Zhu Liang Li, Jian Feng Deng
The positions and relative intensities of the diffraction peaks were in good agreement with the Powder Diffraction Standards data (JCPDS data card36–1451).
Firstly, larger crystallite size resulted in decrease of grain boundary, which led to higher conductivity. the rod-like structure at 500˚C represented a very close contact which may also had positive effect on the reduction of the resistivity.
Firstly, larger crystallite size resulted in decrease of grain boundary, which led to higher conductivity. the rod-like structure at 500˚C represented a very close contact which may also had positive effect on the reduction of the resistivity.
Online since: June 2014
Authors: Ming Yung Wang, Hsiao Kang Ma
Fig. 5 shows the fuel gas in successive reduction; from the above results and Fig. 6 shows there is slight change in 5% case compare with airtight condition that is until 240 seconds fuel gas up to a steady supply.
Obviously rice husk has largest gap with experiment data, others are almost identical to the experiment data, error in the 7%.
Obviously rice husk has largest gap with experiment data, others are almost identical to the experiment data, error in the 7%.