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Sensors 2008, 8(3), 1774-1796; doi:10.3390/s8031774

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

Scribner Associates Inc., 150 E. Connecticut Avenue, Southern Pines, North Carolina 28387, USA
Author to whom correspondence should be addressed.
Received: 12 February 2008 / Accepted: 11 March 2008 / Published: 14 March 2008
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The development of impedance-based array devices is hindered by a lack ofrobust platforms and methods upon which to evaluate and interrogate sensors. One aspectto be addressed is the development of measurement-time efficient techniques forbroadband impedance spectroscopy of large electrode arrays. The objective of this workwas to substantially increase the low frequency impedance measurement throughputcapability of a large channel count array analyzer by developing true parallel measurementmethods. The goal was achieved by Fourier transform-based analysis of simultaneouslyacquiredmulti-channel time-based current and voltage data. Efficacy and quantitativeanalysis of the parallel approach at frequencies less than ca. 10 Hz as well as a combinedsequential parallel approach for efficient broadband impedance spectroscopy over 5-orders of magnitude in frequency is demonstrated through complex impedancemeasurement of arrays consisting of up to 100 elements. View Full-Text
Keywords: Array; sensor; impedance spectroscopy; measurement methods Array; sensor; impedance spectroscopy; measurement methods

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Cooper, K.R.; Smith, M.; Johnson, D. Development and Demonstration of Measurement-Time Efficient Methods for Impedance Spectroscopy of Electrode and Sensor Arrays. Sensors 2008, 8, 1774-1796.

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