Development and Demonstration of Measurement-Time Efficient Methods for Impedance Spectroscopy of Electrode and Sensor Arrays

Sensors

Kevin R. Cooper¹  Matthew Smith² 

[1]Scribner Associates Inc., 150 E. Connecticut Avenue, Southern Pines, North Carolina 28387,USA

[2] E-mails: M. Smith

关键词: Array;    sensor;    impedance spectroscopy;    measurement methods;   

DOI  :  10.3390/s8031774

来源: mdpi

【 摘 要 】

The development of impedance-based array devices is hindered by a lack of robust platforms and methods upon which to evaluate and interrogate sensors. One aspect to be addressed is the development of measurement-time efficient techniques for broadband impedance spectroscopy of large electrode arrays. The objective of this work was to substantially increase the low frequency impedance measurement throughput capability of a large channel count array analyzer by developing true parallel measurement methods. The goal was achieved by Fourier transform-based analysis of simultaneously-acquired multi-channel time-based current and voltage data. Efficacy and quantitative analysis of the parallel approach at frequencies less than ca. 10 Hz as well as a combined sequential + parallel approach for efficient broadband impedance spectroscopy over 5-orders of magnitude in frequency is demonstrated through complex impedance measurement of arrays consisting of up to 100 elements.

【 授权许可】

Unknown   
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