基于全固态选择性电极的汗液K^+传感器设计与性能分析

Design and performance analysis of sweat K^+sensor based on all solid state selective electrode

设计并制备了一种基于全固态选择性电极的汗液K^+传感器,采用微系统(MEMS)微加工工艺制作了微型化柔性电极,实现了传感器的可穿戴;采用电化学原理设计制备了离子选择电极,采用高分子材料包覆K^+离子载体制备了固态选择性敏感膜,实现了传感器对K^+的选择性识别。实验采用电化学工作站对传感器的响应特性进行分析,结果表明:传感器检测限为1 mmol/L,传感器检测范围为1~10 mmol/L,精度优于1.9%FS。设计制作的基于全固态选择性电极的汗液K^+传感器具有微型化、选择性好、检测限低、线性好、可穿戴的特点。

A kind of sweat K^+sensor based on all solid-state selective electrode is designed and prepared.The micro flexible electrode is made by micro processing technology of micro-electro-mechanical system(MEMS),by which wearable sensor is realized.The ion selective electrode is designed and prepared by electrochemistry principle,and the solid-state selective sensitive film is made by polymer material coated with potassium ion carrier,which realizes the selective recognition of K^+for the sensor.In the experiment,electrochemical workstation is used to analyze on response characteristics of the sensor,and the result is the detection limit of the sensor is1 mmol/L,the detection range of the sensor is 1~10 mmol/L,and the precision is prior to 1.9%FS.The designed and manufactured sweat K+sensor based on all solid state selective electrode has the characteristics of miniaturization,good selectivity,low detection limit,good linearity and wearability.