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Bottom-Gate Amorphous In2O3 Thin Film Transistors Fabricated by Magnetron Sputtering
Yang Jiao,Xinan Zhang,Junxia Zhai,Xiankun Yu,Linghong Ding,Weifeng Zhang 대한금속·재료학회 2013 ELECTRONIC MATERIALS LETTERS Vol.9 No.3
In this letter, bottom-gate thin film transistors using amorphous In2O3 as the n-channel active layer were fabricated on SiO2/Si substrates by direct current magnetron sputtering at room temperature. By controlling the sputtering time, In2O3 can be grown into the amorphous phase. Compare to its crystalline counterpart,amorphous In2O3 offer distinctive attractions such as smoother surfaces, better film uniformity, while maintaining comparable or greater carrier mobility. The device with amorphous channel layer shows good performance with the mobility of 15 cm2/Vs and the current on-off ratio of 106. The device operates in enhancement mode with the threshold voltage of 1.4 V. Excellent device performance and low fabrication temperature make the In2O3-TFTs suitable for the potential applications in the large-area electronics.
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Contact characteristics and interfacial motion states during sphere oblique impact with initial spin
Qingpeng Wang,Kai Zhang,Zhenfeng Wang,Heng Wang,Yufeng Sun,Xiankun Gao,Guangyin Xu 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.5
The impact between a sphere and flat surface plays a significant role in the granular handling process. A method is proposed to investigate the evolution of interfacial states for the sphere oblique impact with initial spin. Firstly, the sphere with irregular surface structures is applied, and the imprinted surfaces are recorded with a thin carbon paper. Then the interfacial characteristics are analyzed in cases of impact angle, contact material and drop height, etc. The geometrical parameters decrease exponentially with impact angle and include three main stages: plateau, slow decrease and sharp decrease. The motional ratio corresponds to slow increase, steady state and sharp increase. For the no pre-spin, it goes through five interfacial states with impact angle. Comparatively, the forward spin decreases the critical angle, and the backward spin decreases the number of states. Furthermore, the parameters increase linearly with drop height, while the effect on interfacial states is very little.
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Subsurface Channel Detection Using Color Blending of Seismic Attribute Volumes
Jianhua Cao,Yang Yue,Kunyu Zhang,Jucheng Yang,Xiankun Zhang 보안공학연구지원센터 2015 International Journal of Signal Processing, Image Vol.8 No.12
Color is the critical factor in seismic data interpretation and geological targets visualization. And recently, ideas of color blending have brought the enlightenment in attribute combinations for reservoir characterization in petroleum engineering. In this paper, we present this approach of color blending in different color modes and its application in subsurface channel detection by using seismic attributes data. The color models include RGB model, CMY model and HSV model. We firstly calculate sensitive attributes from three dimensional seismic data, including envelop, coherence and spectral decomposition, etc. Then three types of normalized seismic attributes are set as input into the primary color channel of the color models respectively, and then mixed together to create one color blended volume in three dimensional visualization environment. The blended volume has plenty of geological information coming from the three input attributes, resulting in better resolution for channels than the single attribute. Applications in one survey of DQ oilfield show that channels are vividly imaged with special lighted color on the blended volume slices. The spatial distribution characteristics of channels, including the shapes and branches, are clearly depicted. And for the three blending methods, the RGB model is mostly preferred although the CMY model has almost similar performances in channel detection, while HSV model is slightly inferior in this case.
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