【摘要】 研制了一种基于通用串行总线(USB)接口的微型电化学分析仪(μECS)。仪器采用了20位数模转换器和24位模数转换器,输出电位分辨率达到10μV;输出电位范围为-5～+5V;电流测量范围为1nA～5mA。软件支持循环伏安法等各种常用电化学方法。对仪器主要参数进行了测试,其电流灵敏度小于50pA;输入阻抗大于1011Ω;电位误差小于1mV;电流测量误差小于1%。利用μECS进行了金电极上自组装单分子层(SAM)电化学特性的研究。更多还原

【Abstract】 A finger size electrochemical analyzer based on universal serial bus(USB) interface-micro size electrochemical system(μECS) was developed.A 20 bit Digital to Analog Converter and a 24 bit Analog to Digital Converter were used in μECS.A secondary development platform was used to develop the software.The most common electrochemcal methods such as cyclic voltametry are supported by μECS.Main specifications of μECS were tested.As a demonstration,self-assembling molecule(SAM) on Au electrode was researched with μECS.更多还原