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Online since: August 2024
Authors: Akhil Ranjan, Binni Varghese, Abdul Hannan Yeo, Shiv Kumar, Vudumula Pavan Reddy, Lakshmi Kanta Bera, Navab Singh, Surasit Chung, Huseyin Cakmak, Chen Zhixian, Umesh Chand, Qin Gui Roth Voo, Huamao Lin
The in-situ O2 plasma also showed near-ideal capacitance-voltage (C-V) behavior with low hysteresis and reduced flat-band voltage values, indicating a clear reduction of the interface and bulk trap charges (Fig. 2(b)).
Indeed, it has been found that the devices exhibit mildly improved hysteresis after PDA, attributed to further reduction of trap charges.
Fig. 3(c) shows the XRD data of HfAlO film.
To confirm the influence of PDA on the oxygen composition of the gate dielectric, the X-ray photoelectron spectroscopy (XPS) data of the gate dielectric layer was analyzed (Fig. 3(c)).
The reduction of oxygen vacancies during the O2 treatment improves trap density [6].
Indeed, it has been found that the devices exhibit mildly improved hysteresis after PDA, attributed to further reduction of trap charges.
Fig. 3(c) shows the XRD data of HfAlO film.
To confirm the influence of PDA on the oxygen composition of the gate dielectric, the X-ray photoelectron spectroscopy (XPS) data of the gate dielectric layer was analyzed (Fig. 3(c)).
The reduction of oxygen vacancies during the O2 treatment improves trap density [6].
Online since: May 2022
Authors: Harekrishna Bar
Ag-Au BMNPs formed by the co-reduction of Au(III) and Ag(I) ions in aqueous leaves extract solution where the extract act as both reducing and capping agent.
Bimetallic colloids could be prepared either by simultaneous co-reduction of two kinds of metals to give alloy or successive reduction and deposition one metal over the nuclei of another to have core-shell morphology.
Co-reduction of silver and gold ions forms the Ag-Au BMNPs predominantly, along with few togetherness of both NPs observed in HRTEM images which is due to successive reduction of metal ions.
There is also a strong signal for Cu in the EDX data, which come from Cu TEM grid.
Zhao, Pt skin coated hollow Ag-Pt bimetallic nanoparticles with high catalytic activity for oxygen reduction reaction, J. of Power Sources 36515 (2017) 17-25
Bimetallic colloids could be prepared either by simultaneous co-reduction of two kinds of metals to give alloy or successive reduction and deposition one metal over the nuclei of another to have core-shell morphology.
Co-reduction of silver and gold ions forms the Ag-Au BMNPs predominantly, along with few togetherness of both NPs observed in HRTEM images which is due to successive reduction of metal ions.
There is also a strong signal for Cu in the EDX data, which come from Cu TEM grid.
Zhao, Pt skin coated hollow Ag-Pt bimetallic nanoparticles with high catalytic activity for oxygen reduction reaction, J. of Power Sources 36515 (2017) 17-25
Online since: September 2013
Authors: Feng Jie Zheng, Wen Qan Zang, Zhi Le Jia, Xiao Ping Lu, Qing Chen Liu
events to get timely and accurate information on the disaster, provide the scientific and accurate basis for disaster reduction and relief work[2][3].
Camera with Rotary filter system can be synchronized access to four bands of data, according to the actual need to replace the filter, get more spectral information.
In order to ensure the measured data can reflect the reflection characteristics of the test area features, in the whole test area according to various typical terrain, multi-point measurement of statistical average method is adopted to get reflectance values.
According to the needs, select three typical vegetation, water body, bare soil underlying surface type data processing, the result is shown in the figure 2.
In selecting several typical ground typical objects within the reflectivity image (such as water, vegetation, bare soil) as the sample data, statistical average reflectance.
Camera with Rotary filter system can be synchronized access to four bands of data, according to the actual need to replace the filter, get more spectral information.
In order to ensure the measured data can reflect the reflection characteristics of the test area features, in the whole test area according to various typical terrain, multi-point measurement of statistical average method is adopted to get reflectance values.
According to the needs, select three typical vegetation, water body, bare soil underlying surface type data processing, the result is shown in the figure 2.
In selecting several typical ground typical objects within the reflectivity image (such as water, vegetation, bare soil) as the sample data, statistical average reflectance.
Online since: April 2009
Authors: Feliks Stobiecki, M. Kisielewski, N. Nurgazizov, P. Zhdan
However, due to residual magnetisation,
a MFM probe can introduce distortions to the micromagnetic structure or even change it during
acquisition of the MFM data [3,4] and therefore these factors should be considered very seriously
when interpreting the acquired MFM images.
To reduce the potential inducing effect of the MFM tip on acquired data, a magnetic Co layer was deposited only to one (the external) side of the probe instead of its deposition on the whole chip (as with the majority of commercial MFM probes).
Quantitative analysis of the data presented in a Fig. 1c demonstrated that periodicity of the domain structure in the sample was equal to 170-200 nm.
Detailed analysis of the obtained MFM data leads to the conclusion that the propensity of the MFM probe to modify the sample micromagnetic structure during double-pass scanning can be significantly reduced by decreasing the amount of magnetic material deposited on the MFM tip.
Presented results demonstrate the large contribution of the interaction between the MFM tip and the micromagnetic structure of the sample to acquired MFM data.
To reduce the potential inducing effect of the MFM tip on acquired data, a magnetic Co layer was deposited only to one (the external) side of the probe instead of its deposition on the whole chip (as with the majority of commercial MFM probes).
Quantitative analysis of the data presented in a Fig. 1c demonstrated that periodicity of the domain structure in the sample was equal to 170-200 nm.
Detailed analysis of the obtained MFM data leads to the conclusion that the propensity of the MFM probe to modify the sample micromagnetic structure during double-pass scanning can be significantly reduced by decreasing the amount of magnetic material deposited on the MFM tip.
Presented results demonstrate the large contribution of the interaction between the MFM tip and the micromagnetic structure of the sample to acquired MFM data.
Online since: November 2012
Authors: Xiao Hong Tai, Rong Wei Shen
It consists of torque sensor of steering wheel, speed sensor, angle sensor of steering wheel, current sensor of motor, voltage sensor of motor, ECU, DC motor, worm reduction mechanism, etc.
The assisting torque is amplified by worm reduction mechanism and acts on the screw shaft of the recirculating ball-type steering box.
Fig.1 The structure of electric power steering system for electric power bus 1.steering wheel 2.angle sensor 3.torque sensor 4. recirculating ball-type steering box 5.worm reduction mechanism 6.steering rocker 7.steering tie rod 8.wheel Modeling of EPS The Model of Mechanical Steering System and Motor.
Fig.6 Torque –Angle Fig.7 Torque of steering wheel –time Verification of Simulation Model To ensure the correctness of EPS model, the EPS model should be verified by the data of test.
The simulation model consists of model of driver, model of mechanical system and motor. (2)The test of frequency sweep is carried out and the simulation model of EPS is verified by the data of test.(3) Simulation research of basic assisting characteristic is carried out by the simulation model.
The assisting torque is amplified by worm reduction mechanism and acts on the screw shaft of the recirculating ball-type steering box.
Fig.1 The structure of electric power steering system for electric power bus 1.steering wheel 2.angle sensor 3.torque sensor 4. recirculating ball-type steering box 5.worm reduction mechanism 6.steering rocker 7.steering tie rod 8.wheel Modeling of EPS The Model of Mechanical Steering System and Motor.
Fig.6 Torque –Angle Fig.7 Torque of steering wheel –time Verification of Simulation Model To ensure the correctness of EPS model, the EPS model should be verified by the data of test.
The simulation model consists of model of driver, model of mechanical system and motor. (2)The test of frequency sweep is carried out and the simulation model of EPS is verified by the data of test.(3) Simulation research of basic assisting characteristic is carried out by the simulation model.
Online since: November 2015
Authors: R. Sellamuthu, Raj A. Nidhin
Fig. 1 Microstructure of Al base alloy Fig. 2 Microstructure of aged modified alloy
Aging and Hardness Data.
Fig.6 Hardness of alloy in this study compared with that of previous studies Wear and CoF Data.
Thus 96% reduction in the wear rate is obtained for aged Ni added alloy compared to the base alloy.
This reduction in wear rate is due to the precipitation hardening effect.
· 96% reduction in the wear rate is obtained for aged Ni added alloy compared to the base alloy
Fig.6 Hardness of alloy in this study compared with that of previous studies Wear and CoF Data.
Thus 96% reduction in the wear rate is obtained for aged Ni added alloy compared to the base alloy.
This reduction in wear rate is due to the precipitation hardening effect.
· 96% reduction in the wear rate is obtained for aged Ni added alloy compared to the base alloy
Online since: July 2014
Authors: Wen Han, Shao Xian Zhang, Yi Lei Ren
Viscous damping wall vibration reduction damping force mainly by the viscous damping material with built-steel to provide the level of shear, which can be obtained in parallel with numerous viscous damper in the horizontal direction, according to this characteristic, this article adopts the way of more viscous dampers in parallel to simulate the viscous damping wall vibration control [4].
Then the dynamic time history analysis was carried out on the case 3, compared non-control data with case 3 vibration data under the same seismic waves, contrastive analysis of the control points as bellow.
Conclusion (1)Through the contrastive analysis of the various control points under different working conditions, structures of the lateral displacement of each control point, relative speed, interlayer displacement and bending moment of the bottom bar are greatly reduced after additional viscous damping wall, it has played a significant effect of vibration reduction
(3)Under the different seismic wave spectrum characteristics, additional viscous damping wall building structure is not only the control point maximum response value can get better control, and throughout the duration of seismic wave has the significant effect of vibration reduction.
Then the dynamic time history analysis was carried out on the case 3, compared non-control data with case 3 vibration data under the same seismic waves, contrastive analysis of the control points as bellow.
Conclusion (1)Through the contrastive analysis of the various control points under different working conditions, structures of the lateral displacement of each control point, relative speed, interlayer displacement and bending moment of the bottom bar are greatly reduced after additional viscous damping wall, it has played a significant effect of vibration reduction
(3)Under the different seismic wave spectrum characteristics, additional viscous damping wall building structure is not only the control point maximum response value can get better control, and throughout the duration of seismic wave has the significant effect of vibration reduction.
Online since: July 2019
Authors: Takayoshi Shimura, Takuji Hosoi, Heiji Watanabe, Kidist Moges, Shinsuke Harada, Mitsuru Sometani
Moreover, we demonstrated that POA in a pure N2 ambient (N2-POA) at a temperature above 1350°C leads to an incorporation of nitrogen atom into SiO2/SiC interface and thus results in reduction of interface state densities (Dit) [3].
It should be noted that in the case of N2-POA, a clear N 1s signal was obtained even for as-treated thick SiO2 (~14 nm) surface (data not shown) and for the slightly etched surface with SiO2 thickness of ~9 nm (Fig. 2(d)).
Furthermore, a reduction of N 1s intensity after complete removal of SiO2 was almost negligible for NO10.
The complete removal of the SiO2 layer results in an apparent reduction of N signal (closed symbols), suggesting that interfacial N atoms are located not only at the SiC side but also at the SiO2 side.
Moreover, a clear N 1s peak was detected on a 14-nm-thick SiO2 surface from an XPS measurement taken right after N2-POA was conducted (data not shown).
It should be noted that in the case of N2-POA, a clear N 1s signal was obtained even for as-treated thick SiO2 (~14 nm) surface (data not shown) and for the slightly etched surface with SiO2 thickness of ~9 nm (Fig. 2(d)).
Furthermore, a reduction of N 1s intensity after complete removal of SiO2 was almost negligible for NO10.
The complete removal of the SiO2 layer results in an apparent reduction of N signal (closed symbols), suggesting that interfacial N atoms are located not only at the SiC side but also at the SiO2 side.
Moreover, a clear N 1s peak was detected on a 14-nm-thick SiO2 surface from an XPS measurement taken right after N2-POA was conducted (data not shown).
Online since: March 2008
Authors: Bao Feng Cui, Jun Yan Zhang, Hui Di Zhou, Jian Min Chen
The measurements were
carried out eight times for each specimen to obtain average data, and the thickness was recorded to an
accuracy of 0.3 nm.
These accumulations can be eliminated by control experimental conditions such as the time, the concentration etc. 410 405 400 395 390 4600 4800 5000 5200 5400 5600 5800 6000 6200 6400 6600 Data: Data1_B Model: Gauss Equation: y=y0 + (A/(w*sqrt(PI/2)))*exp(-2*((x-xc)/w)^2) Weighting: y No weighting Chi^2/DoF = 6402.53488 R^2 = 0.96339 y0 4977.952 ?
These are demonstrated that the PAMAM (G4.0)-SAMs possess excellent friction-reduction and wear resistant property.
The superior friction-reduction and wear life can be attributed to good adhesion of the film to the substrate and the special stucture of the PAMAM(G4.0) molecule.
We have prepared a PAMAM (G4.0) -SAMs on a silicon (100) wafer successfully and finds it possesses excellent friction-reduction and wear resistant property.
These accumulations can be eliminated by control experimental conditions such as the time, the concentration etc. 410 405 400 395 390 4600 4800 5000 5200 5400 5600 5800 6000 6200 6400 6600 Data: Data1_B Model: Gauss Equation: y=y0 + (A/(w*sqrt(PI/2)))*exp(-2*((x-xc)/w)^2) Weighting: y No weighting Chi^2/DoF = 6402.53488 R^2 = 0.96339 y0 4977.952 ?
These are demonstrated that the PAMAM (G4.0)-SAMs possess excellent friction-reduction and wear resistant property.
The superior friction-reduction and wear life can be attributed to good adhesion of the film to the substrate and the special stucture of the PAMAM(G4.0) molecule.
We have prepared a PAMAM (G4.0) -SAMs on a silicon (100) wafer successfully and finds it possesses excellent friction-reduction and wear resistant property.
Online since: January 2015
Authors: Henryk Dyja, Bartosz Koczurkiewicz, Marcin Knapiński, Anna Kawałek, Marcin Kwapisz, Monika Magiera
In the first six rolling passes, the difference between the equation for calculated force and numerical data makes about 15%.
A sharp increase in rolling force in rolling passes 5 and 7 can be noticed, which is due to the adoption of a scheme for a large reduction in rolling.
The elementary reduction of roll pass 5 was 29% while roll pass 7 made 42%.
Graph of changes in force during rolling (Scheme 2) Summary Based on numerical studies and mathematical calculations of the rolling process as well as considering two different schemes, it can be concluded that: - numerical calculations of rolling force have been performed using Forge 2008®, and therefore do not differ significantly from the results obtained in the calculation of Eq. (2); - no effect of changes in temperature on the value of the total rolling force can be observed; - an increase in reduction rates significantly affects the value of force during rolling; - more uniform distribution of force during rolling was observed in Scheme 2.
A sharp increase in rolling force in rolling passes 5 and 7 can be noticed, which is due to the adoption of a scheme for a large reduction in rolling.
The elementary reduction of roll pass 5 was 29% while roll pass 7 made 42%.
Graph of changes in force during rolling (Scheme 2) Summary Based on numerical studies and mathematical calculations of the rolling process as well as considering two different schemes, it can be concluded that: - numerical calculations of rolling force have been performed using Forge 2008®, and therefore do not differ significantly from the results obtained in the calculation of Eq. (2); - no effect of changes in temperature on the value of the total rolling force can be observed; - an increase in reduction rates significantly affects the value of force during rolling; - more uniform distribution of force during rolling was observed in Scheme 2.