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MEMS Bionic Vector Hydrophone Guojun Zhang 1, a, Chenyang Xue 2, b , Jijun Xiong 1, c, Wendong Zhang 1, 2, Xiaoyao Wang1, 2 Linxian Liu1,2 and Xiaoyang Ge 1, 2 1 Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education1 Taiyuan 030051, Shanxi, China 2 Science and Technology on Electronic Test & Measurement Laboratory2 (North University of China) Taiyuan 030051, Shanxi, China aemail:zhangguojun1977@nuc.edu.cn bemail:xuechenyang@nuc.edu.cn, cemail:xiongjijun@nuc.edu.cn Keywords: vector hydrophone; MEMS; bionic structure.
(1)The Sensitivity and Frequency of The Hydrophone Affected by The Material of The Cilia Among the acoustic-electric transducer infrastructure, the cilia play the role of perceiving the sound wave.
Therefore, the geometry of cilia also has certain requirements. 1) Material selection of the cilia According to the results derived from the co-vibration model, the density of the cilia should match the surrounding material (water here) in order to make the cilia vibrate with the acoustic particles Then considering the cilia take a role in transmitting the vibration of acoustic particle, so the glass optical fiber with greater stiffness is selected to replace the previous plastic cylinder with less stiffness.
Material and geometry of the cilia, bonding mode between the cilia and central box, sheet resistances have been optimized.
[7] Chenyang Xue, Shang Chen, Wendong Zhang, Binzhen Zhang, Guojun Zhang and Hui Qiao, Microelectronics Journal. 38(2007)1021-1026

Despite the promising material properties, SiC MOSFETs still suffer from low channel mobility and reliability concern due to high interface state density and carbon related defects which only exist in the SiO2/SiC interface [9-11].
Acknowledgement This work was supported by the Ministry of Science and Technology, Taiwan, R.
Rahman et al., “High-Temperature SiC CMOS Comparator and Op Amp for Protection Circuits in Voltage Regulators and Switch-Mode Converters,” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 4, no. 3, pp. 935-945, Sept. 2016
Frey, “Improving 5V Digital 4H-SiC CMOS ICs for Operating at 400°C Using PMOS Channel Implantation,” Materials Science Forum, vol. 963, pp. 827-831, July. 2019
Grasser, "Understanding BTI in SiC MOSFETs and Its Impact on Circuit Operation," in IEEE Transactions on Device and Materials Reliability, vol. 18, no. 2, pp. 144-153, June 2018

Different surfaces with different materials have different reflective properties; a good lighting condition should consider not only the lighting level of the surface but also a reasonable luminance level of corresponding observation point.
We simplify the working surface, based on the material, into mirror reflection and diffuse reflection, and in this way we can accurately get the luminous flux distribution emitted by the light source in the anterior-posterior direction, it will be helpful to meet the needs to reach a comfortable , safe, energy saving lighting condition .
Meanwhile, diffuse reflection is represented by reflection coefficient; for indoor working surface, varies from 0.1 to 0.9 depending on materials, which should be calculated specifically.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China(51278309); Foundation of Shenzhen Science and Technology Innovation Committee（CXC201006040018A）.
[2]X.W.Chu.China Illuminating Engineering Journal, 2011(5): 42-46,57

Kim 2,d 1 School of Materials Science and Engineering, Inha University, 253 Yonghyun-dong, Nam-gu, Incheon 402-751, Korea 2 Advanced Materials R&D Center, Korea Institute of Industrial Technology, 994-32 Dongchundong, Yeonsu-gu, Incheon 406-130, Korea 1,ajtk0134@hanmail.net, 1,c mskim@inha.ac.kr Keywords: Al alloy, melt spinning, spray forming, microstructure, mechanical property Abstract.
In this study, we therefore have tried to produce a bulk Al-Fe-TM (TM: Mo, V, Zr) material by means of melt spinning and subsequent hot extrusion.
Sano: 87' International Syposium&Exhibition on Science and Technology of Sintering held at Tokyo, on Nov. 4~6, (1987) [3] Won-Yong Kim, Jae-Sung Park, Mok-Soon Kim and Tae-Yeub Ra: Journal of Rare Earths, Vol. 22(2004), P. 65-68 [4] J.S.

Study on the Thermal Stability of MUF Co-polymerization resin Yunwu ZHENG 1, a, Libin ZHU 1,b, Jiyou GU 1,c, Yanhua ZHANG 1,d 1College of Material Science and Engineering of Northeast Forestry University, Harbin, China azyw85114@163.com, bzhulb600@vip.sina.com, cdldgujy@yahoo.cn, dzyhnefu@163.com Keywords: MUF resin; Thermal Stability; Co-polymerization; TGA.
Introduction Urea-formaldehyde (UF) resin is a polymeric condensation product of the chemical reaction of formaldehyde with urea, possessing some advantages such as the rich source of raw materials, good bonding performance in wood panels, water solubility, and a lower price.
Different resin materials with different curing system in the whole temperature range are to comply with a decomposition reaction.
Acknowledgements The authors gratefully acknowledge the financial assistance of Environmental Protection Industry Special Funding Project (Grant No.200809120); Harbin Natural Science Committee Foundation (Grant No. 2008AA4BG006).
And the Northeast Forestry University Young Scientific Research Fund (Grant No. 09013) References [1] Libin Zhu, Jiyou Gu, Xiangli Weng: Journal of Northeast Forestry University Vol. 32(2004), p. 32-34 [2] Jiyou Gu, Libin Zhu, ONO Hirokuni: Chemistry & Industry of Forest Products Vol. 25(2005), p. 11-16 [3] A Pizzi, L Lipschtiz, J Valenzuela: Holzforschung Vol. 48(1994), p. 254-261 [4] Dongbin Fan, Janzhang Li, ZhenLei Lu, Wenrui Zhou, An Mao: China Adhesives Vol. 15(2006), p. 1-5 [5] K.

Relationship between the Conductivity of Supernatant of 3Y-TZP Powder and Sintering Properties of Its Ceramics Xiaobo Wu1,a, Dazhi Sun1,b, Danyu Jiang2, Haifang Xu2, Dexin Huang2 and Bing Xu2 1 Shanghai Normal University, Shanghai 200234, China 2 Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China a wxb0515@126.com, b sundazhi@shnu.edu.cn Keywords: Conductivity; Supernatant; Sintering properties; 3Y-TZP Abstract.
Introduction Owing to its high strength and toughness, 3mol% yttria-doped tetragonal zirconia polycrystals (3Y-TZP) is one of the most interesting ceramic materials for structural applications [1,2].
Experimental Procedure 3Y-TZP, used as the raw material, was prepared by gel-solid state synthesis technique [5, 6].
Acknowledgements The authors would like to thank the National Science Foundation of China (60807036) and the Leading Foundation of Shanghai (08JC1417200) for supporting the research.
Sun: Journal of Inorganic Materials.

Analysis on Steady Temperature of Honeycomb-core Panel Based on Coupled Aerothermal Heating and Honeycomb Conduction Liang Wei a, Fu Yu, Liu Zhenqi, Yang Lulu, Mai Hanchao School of Aeronautics Science and Engineering, Beihang University, Beijing 100191, China a email: liangwei@buaa.edu.cn Keywords: honeycomb-core panel; MTPS; grey body; temperature field Abstract.
The structure and material parameters are as follows: r is the radius, δ is the honeycomb wall thickness, A is the area where the heat transfers along the wall thickness (A=2πrδ), S is the area where the heat radiates in the cavity (S=πr2), k is the material thermal conductivity, ε is the g material ray, h1 is the front plate thickness, h is the honey core thickness and h2 is the rear plate thickness.
The geometric and material parameters of the structure are in agreement with Reference [6].The radius of the honeycomb, selected as circumradius, is 4.7625mm, the honeycomb core thickness is 0.0381mm, the core height is 12.7mm, the front plate thickness is 1.524mm, the rear plate 0.0762mm, the gray of the material is 0.14 and the thermal conductivity is 24.7W/(K·m).
Acknowledgments The research was supported in part by the National Natural Science Foundation of China through the grant 10972021.
Research of the Higher-order Finite Element Arithmetic for Radiation Exchange.Chinese Journal of Aeronautics.9(3):197-202,2006

The alloy with excellent room and high temperature strength, ductility, fracture toughness, good thermal stability, low density and other characteristics favored a new aerospace materials[1-3].
The elongation of materials decrease first with the increasing tensile temperature, the minimum appears at about 250˚C.
Therefore, the follow-up materials’ thermal processing temperature should not exceed 420˚C
It shows that the material in the organization has better thermal stability, which can guarantee the stability of the materials’ properties
(School of Materials Science and Engineering, Changsha, 2003), In Chinese [11] S.

Shi2 1School of Materials Science and Engineering, Shanghai University, 201800 Shanghai China 2Zhengzhou Research Institute for Abrasives & Grinding, 450013 Zhengzhou China Keywords: Pore-forming agent, Resin bond, Diamond grinding Wheel, Back-grinding, Silicon wafer Abstract.
In Fig.4, spherical polymer micro-bubbles are chosen as the pore-forming materials.
Such materials can control the consistency and distribution uniformity of the created pores’ diameter.
In Fig.7, natural organic macromolecule materials are chosen to form micropores by physical occupation.
Ueno: Key Engineering Materials Vol. (2004), pp: 251–256

Raw material providers provide raw materials, semi-products, parts and services.
He: China Soft Science, Vol. 1 (2002) No.2, pp.106-110 (in Chinese)
Li: Journal of Chinese Mechanical Engineering, Vol. 11 (2000) No.2, pp.93-96 (in Chinese)
Zhang: Journal of System Simulation, Vol. 13 (2001) No.1, pp.118-123 (in Chinese)
Zhong: Journal of Shanghai Jiaotong University, Vol. 33 (1993) No.7, pp.906911 (in Chinese) [13] S.