《中国科学：技术科学》英文版2017年第1期文章概览

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Science ChinaTechnological Sciences
Volume 60, Issue 1, January 2017
ISSN: 1674-7321

COVER   Particle image velocimetry (PIV) has been developed for more than 30 years. Besides the original purpose of extracting velocity via PIV, researchers get increasing interest in deriving more quantities from the measurement. Recently, the most popular direction is to develop the pressure reconstruction technique based on time-resolved PIV velocity. However, a PIV measurement with high temporal resolution is normally achieved using expensive devices, such as professional high-speed cameras, which limits its application. Therefore, we try to utilizea regular single-lens reflex (SLR) camera with color layers for recording temporal information and design a triple-exposure color PIV (TE-CPIV) system for velocity-pressure measurement. Different from the classical color PIV of measuring volumetric velocity by coupling color with spatial information,TE-CPIV measures time-resolved velocity by coupling color with temporal information. Time sequential light sources of the three primary colors of red, green, and blue are generated to illuminate the measurement domain. Colorful particle images are captured by the SLR camera. A contamination correction algorithm is performed to reduce the contamination of each color illumination on the other color layers. After separating the three color layers, standard cross-correlation process is used to obtain two velocity fields. Eventually, material acceleration and pressure can be derived from the velocity fields. TE-CPIV provides a simple and effective way of estimating pressure with low cost and good convenience. It also has the potential for volumetric pressure reconstruction with three or more SLR cameras.

REVIEW
A triple-exposure color PIV technique for pressure reconstruction
WANG ZhongYi, GAO Qi & WANG JinJun
Sci China Tech Sci, 2017, 60(1): 1‒15

ARTICLES
Stability control of steer bywire system based on synthesis robust control
WANG ChunYan, DENG Ke, ZHAO WanZhong, ZHOU Guan & ZHOU Dong
Sci China Tech Sci, 2017, 60(1): 16‒26

Investigation on the cleaning of KDP ultra-precision surface polished with micro water dissolution machining principle
CHEN YuChuan, GAO Hang, WANG Xu, GUO DongMing & TENG XiaoJi
Sci China Tech Sci, 2017, 60(1): 27‒35

Overall efficiency optimization of controllable mechanical turbo-compounding system for heavy duty diesel engines
HE GuanZhang, XIE Hui & HE ShiJie
Sci China Tech Sci, 2017, 60(1): 36‒50

Adirect atomic layer deposition method for growth of ultra-thin lubricant tungsten disulfide films
SUN YongFeng, CHAI ZhiMin, LU XinChun & HE DanNong
Sci China Tech Sci, 2017, 60(1): 51‒57

Thermal stability of LiFePO4/C-LiMn2O4 blended cathode materials
DU YuanChao, HUANG XiaoPeng, ZHANG KeYu, LIANG Feng, LI QiuXia, YAO YaoChun & DAI YongNian
Sci China Tech Sci, 2017, 60(1): 58‒64

Liquid metal corrosion sculpture to fabricate quickly complex patterns on aluminum
LU JinRong, YI LiTing, WANG Lei, TANSiCong, GUI Han & LIU Jing
Sci China Tech Sci, 2017, 60(1): 65‒70

Au modified ZnO nanowires for ethanol gas sensing
WU YouNi, JIANG Ting, SHI TieLin, SUNBo, TANG ZiRong & LIAO GuangLan
Sci China Tech Sci, 2017, 60(1): 71‒77

A high strength pH responsive supramolecular copolymer hydrogel
WANG Qing, ZHANG YinYu, DAI XiYang, SHIXiaoHuan & LIU WenGuang
Sci China Tech Sci, 2017, 60(1): 78‒83

Identification of green tea origins by near-infrared (NIR) spectroscopy and different regression tools
ZHUANG XinGang, WANG LiLi, CHEN Qi, WUXueYuan & FANG JiaXiong
Sci China Tech Sci, 2017, 60(1): 84‒90

Efficiency analysis and optimization of wireless power transfer system for freely moving biomedical implants
SHAO Qi, LIU Hao & FANG XueLin
Sci China Tech Sci, 2017, 60(1): 91‒101

Coupled chemical effects of carbon dioxide and hydrogen additions on premixed lean dimethyl ether flames
PAN Wei & LIU Dong
Sci China Tech Sci, 2017, 60(1): 102‒115

Positive and negative shear lag behaviors of composite twin-girder decks with varying cross-section
ZHU Li, NIE JianGuo & JI WenYu
Sci China Tech Sci, 2017, 60(1): 116‒132

Finite element analysis for wellbore stability of transversely isotropic rock with hydraulic-mechanical-damage coupling
WANG YongLiang, LIU ZhanLi, YANG HengLin & ZHUANG Zhuo
Sci China Tech Sci, 2017, 60(1): 133‒145

Effect of three-electrode plasma synthetic jet actuator on shock wave control
ZHOU Yan, XIA ZhiXun, LUO ZhenBing & WANG Lin
Sci China Tech Sci, 2017, 60(1): 146‒152

Basin flood control system risk evaluation based on variable sets
PENG Yong, CHU JingGang & XUEZhiChun
Sci China Tech Sci, 2017, 60(1): 153‒165

First observations of low latitude whistlers using WHU ELF/VLF receiver system
CHEN YanPing, NI BinBin, GU XuDong, ZHAO ZhengYu, YANG GuoBin, ZHOU Chen & ZHANG YuanNong
Sci China Tech Sci, 2017, 60(1): 166‒174

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