Nanowire-Based Electrochemical Biosensors

Abstract

We review recent advances in biosensors based on one‐dimensional (1‐D) nanostructure field‐effect transistors (FET). Specifically, we address the fabrication, functionalization, assembly/alignment and sensing applications of FET based on carbon nanotubes, silicon nanowires and conducting polymer nanowires. The advantages and disadvantages of various fabrication, functionalization, and assembling procedures of these nanosensors are reviewed and discussed. We evaluate how they have been used for detection of various biological molecules and how such devices have enabled the achievement of high sensitivity and selectivity with low detection limits. Finally, we conclude by highlighting some of the challenges researchers face in the 1‐D nanostructures research arena and also predict the direction toward which future research in this area might be directed.

Document Type

Article

DOI

https://doi.org/10.1002/elan.200503449

Keywords

nanosensors, biosensors, field effect transistors (FETs), carbon nanotubes, conducting polymer nanowires, silicon nanowires, metallic nanowires, one‐dimensional nanostructures, assembly, magnetic alignment, functionalization

Publication Date

2006

Journal Title

Electroanalysis

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