Sensing H+ with conventional neural probes
File(s)
Published version
Author(s)
Trantidou, T
Prodromakis, T
Tsiligkiridis, V
Chang, YC
Toumazou, C
Type
Journal Article
Abstract
In this paper, we demonstrate a technique for transforming commercially available neural probes used for electrical recordings, into chemical sensing devices for detection of ionic concentrations in electrolytes, with particular emphasis to pH. This transformation requires a single post-processing step to incorporate a thin indium tin oxide membrane for sensing H+. Measured results indicate a chemical sensitivity of 28 mV/pH, and relatively low leakage currents (2–10 nA) and drifts (1–10 mV/h). The proposed sensing device demonstrates the possibility of a low-cost implementation that can be reusable and thus versatile, with potential applications in real-time extracellular but mainly intracellular chemical monitoring.
Date Issued
2013
Date Acceptance
2013-05-19
Citation
Applied Physics Letters, 2013, 102 (2)
ISSN
1077-3118
Publisher
American Institute of Physics (AIP)
Journal / Book Title
Applied Physics Letters
Volume
102
Issue
2
Copyright Statement
Copyright © 2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 102, 223506 (2013) and may be found at http://scitation.aip.org/content/aip/journal/apl/102/22/10.1063/1.4809674
Article Number
223506