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Biosensing platform on a flexible substrate
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DOI：10.1016/j.snb.2014.12.075.png)
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Abstract
En 中文
This work presents implementing a low cost pH sensing system for biological applications in a flexible electronics process. As a part of the system the work describes an ion sensitive field effect transistor, using indium tin oxide (ITO) as a sensing layer and gold as a reference electrode, on a flexible substrate. The devices presented here are designed and fabricated using the thin film transistor (TFT) display technology at the Arizona State University Flexible Electronics and Display Center. It was observed that ITO has a sensitivity of 50 mV/pH. The work also discusses the variability in these devices and signal processing that could be used to calibrate them. Toward this end, a readout circuit designed in a 0.5 mu m CMOS process is presented to interface with the sensors. (C) 2014 Elsevier B.V. All rights reserved.
Keywords:
PEN
Microfluidic
CMOS
ISFET
ITO
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