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	Research and development on the valve-less piezoelectric pump with unsymmetrical corrugation chamber bottom (EI CONFERENCE) 会议论文 OAI收割 2006 IEEE International Conference on Information Acquisition, ICIA 2006, August 20, 2006 - August 23, 2006, Weihai, Shandong, China 作者: Zhang J.; Li D.; Zhang J.; Zhang J. 收藏 \| 浏览/下载：18/0 \| 提交时间：2013/03/25 The valve-less piezoelectric pump is more suitable for minimization and microminiaturization than the valve piezoelectric pump especially for the Microelectromechanical System (MEMS) because of its simple structure. However in order to control the flow direction of the fluid through the pump some assembles have to be attached outside the chamber. And it is no doubt that these assembles will take some space and hinder its further microminiaturization. In this paper a novel valve-less piezoelectric pump with unsymmetrical corrugation chamber bottom (UCCB) is presented. It ingeniously takes advantage of the space of the chamber by developing its bottom into a unsymmetrical corrugation shape along the axis of the inlet and outlet. As a result a series of diffuse pipes and nozzle pipes (or wedge-shaped pipes) which substitute the regular diffuse/nozzle elements fitted outside the chamber are alternatively formed between the unsymmetrical corrugation chamber bottom (UCCB) and the piezoelectric vibrator. The piezoelectric vibrator is opposite to the UCCB. And these diffuse pipes and nozzle pipes are able to force the fluid in the chamber to flow along a single direction when the pump works. And then the mathematic model is established to present the relationship between the mean energy loss and the flow rate of the pump. Basing on the mathematic model the theory on the pump working is analysed. Finally a real UCCB valve-less piezoelectric pump is manufactured and the test with it is carried out to verify the theory above-mentioned. 2006 IEEE.
	Optical and electrochemical detection techniques for cell-based microfluidic systems 期刊论文 OAI收割 ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2006, 卷号: 384, 期号: 6, 页码: 1259-1268 Yi, CQ; Zhang, Q; Li, CW; Yang, J; Zhao, JL; Yang, MS 收藏 \| 浏览/下载：25/0 \| 提交时间：2011/11/08 MICROCHIP CAPILLARY-ELECTROPHORESIS CONTACTLESS CONDUCTIVITY DETECTOR CHEMILUMINESCENT MU-BIOSENSORS THERMAL LENS MICROSCOPE FLOW-CONTROL CONCEPT ON-VALVE SYSTEM LIVE CELLS AMPEROMETRIC DETECTION FLUORESCENCE DETECTION ABSORBENCY DETECTION
	The application of auto-controlled liquid crystal light valve arrays to photolithography shutter (EI CONFERENCE) 会议论文 OAI收割 ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China 作者: Chen Y. 收藏 \| 浏览/下载：14/0 \| 提交时间：2013/03/25 Photolithography shutter is usually used to control exposure in order to obtain patterns of code disc and metrology grating which are the core components of optical shaft encoder. But perforated film as photolithography shutter has many disadvantages such as taking too long time to perforate easily making wrong code lower reusable ratio. Mathematical models for resist property luminous efficiency and exposure have been established by deducing their relations for avoiding the disadvantages which provides the theory of using liquid crystal light valve (LCLV) replacing proforated film. Based on operating principles of LCLV and control theories of photolithography shutter the principle diagram of control circuit of LCLV arrays has been designed according to theirs control principles. In the control system LCLV arrays as photolithography shutter are realized by adopting DS75451 to drive them and using AT89C51 chip to control them. By photolithographic experiment the patterns of code disc are good the edges of lines are vertical it indicates LCLV arrays as photolithography shutter may control exposure and light passing accords with the intending requires. It proves using LCLV arrays replacing perforated film as photolithography shutter is feasible completely.