Screen-printed transcutaneous oxygen sensor employing polymer electrolytes
Screen-printed transcutaneous oxygen sensor employing polymer electrolytes
复制标题
采用聚合物电解质的丝网印刷经皮氧传感器
DOI：
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复制
发表时间：
2003
影响因子：
3.2
通讯作者：
J. Atkinson
中科院分区：
文献类型：
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作者：
Dr Y. Z. Lam;J. Atkinson
一次性，经皮氧传感器已被设计和实施使用丝网印刷技术的所有制造阶段。该传感器集成了一个加热元件，以促进血液气体的经皮扩散，从而可以获得动脉血液气体浓度的可靠估计。该设备的氧传感部分由丝网印刷的Clark电池组成，该电池用作电极、电解质和膜。采用具有金工作电极和对电极以及银/氯化银参比电极的三电极配置。几种不同的聚合物电解质和膜材料在该装置的结构进行了评估，并比较了它们的性能。建造了一个全自动气体测试装置，使氧气水平能够在计算机控制下变化。在不同的氧气浓度水平和各种测试环境下对传感器进行了循环伏安法和静态分析。线性关系的平均灵敏度水平为0.02 μA（mmHg）−1，回归系数为0.99。用聚四氟乙烯膜覆盖的原型给出了I（μA）=−0.025PO2（mmHg）−0.085的实验结果。有几个因素影响传感器的性能。这些调查极大地促进了对材料在实现可行的低成本传感器中的适用性的理解。
A disposable, transcutaneous oxygen sensor has been designed and implemented using screen-printing technology for all fabrication stages. The sensor incorporates an integral heating element to promote transcutaneous diffusion of blood gases so that a reliable estimation of arterial blood gas concentration can be obtained. The oxygen sensing part of the device consists of a screen-printed Clark cell implemented as electrodes, electrolyte and membrane. A three-electrode configuration is employed with gold working and counter electrodes and a silver/silver chloride reference electrode. Several different polymer electrolyte and membrane materials were evaluated in the construction of the device, and their performances were compared. A fully automated gas testing rig was constructed to enable oxygen levels to be varied under computer control. Cyclic voltammetry and static analysis of the sensors were carried out at different oxygen concentration levels and in various test environments. Linear relationships were established with an averaged sensitivity level of 0.02 μA(mmHg)−1 and high regression coefficients of 0.99. The prototype covered with a polytetrafluoroethylene membrane gave the experimental result of I (μA)=−0.025PO2 (mmHg)−0.085. Several factors influenced the performance of the sensors. The investigations have greatly contributed towards an understanding of the suitability of the materials in achieving a viable, low-cost sensor.