POTENTIOMETRIC MICROSENSORS

被引:72
作者
JANATA, J
机构
[1] Department of Materials Science and Engineering, University of Utah, Salt Lake City
关键词
D O I
10.1021/cr00103a001
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Chemical microsensors are a growing area of analytical microinstrumentation. The miniaturization resulting from combination of traditional electrochemical and integrated circuit fabrication techniques not only has obvious practical advantages, e.g., size, sample volume speed of response, etc., but also opens some fundamentally new possibilities. Thus, the use of pHsensitive insulators is possible only in ISFETs. The troublesome interference from buffer capacity in pHbased enzyme sensors may be mitigated by the internal generation and control of hydrogen ions inside the enzyme- containing layer. This can be conveniently done in a microfabricated enzyme electrode. Finally, a whole new class of solid-state potentiometric microsensors based on chemical modulation of the electron work function can be built around the insulated gate field effect transistor. © 1990, American Chemical Society. All rights reserved.
引用
收藏
页码:691 / 703
页数:13
相关论文
共 37 条