Electrical shielding for silicon nanowire biosensor in microchannels

Songyue Chen; Yanbo Xie; Arpita De; Albert Van Den Berg; Edwin T. Carlen

doi:10.1063/1.4826689

Electrical shielding for silicon nanowire biosensor in microchannels

Songyue Chen, Yanbo Xie, Arpita De, Albert Van Den Berg, Edwin T. Carlen

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

When integrating silicon nanowire biosensors with a microfluidic sample delivery system, additional challenges are introduced. Noise and erroneous signal generation induced by sample fluidic handling such as flow rate fluctuations during sample switching reduce the quality and reliability of the measurement system. In this paper, we propose an effective electrical shielding method to improve the stability and reliability of the setup by placing double electrodes instead of a single electrode that is traditionally used for nanowire sensors. Experimental results show that with proper shielding electrical measurements are not influenced by flow speed variations or during sample switching.

Original language	English
Article number	173702
Journal	Applied Physics Letters
Volume	103
Issue number	17
DOIs	https://doi.org/10.1063/1.4826689
State	Published - 21 Oct 2013
Externally published	Yes

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Electrical shielding for silicon nanowire biosensor in microchannels

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