基于微流控芯片的液体电导测量

摘要

A conductance micro-fluidic chip was fabricated by electrochemistry corrosion. Based on the traditional fabrication method of micro-fluidic chip, thin brass wire is etched and broken into two elec- trodes for impedance measurement. Conductance of polystyrene beads solutions with densities of 21.0 %, 28. 1%, 37.50% and 50% are measured with the micro-fluidic chip. The measured results conform to the theory, showing effectiveness of the chip in liquid conductance measurement.%在传统微流控芯片制作方法的基础上，利用电化学腐蚀来制作电导式微流控芯片。对浓度分别为21．0％、28．1％、37．5％、50％的聚苯乙烯溶于去离子水的微粒混悬液进行实验测量，实验表明，该芯片测量与理论基本符合，芯片适用于液体溶液的阻抗测量。