Self-assembled nanotube field-effect transistors for label-free protein biosensors

Reference:

Hu, P., Fasoli, A., Park, J., Choi, Y., Estrela, P., Maeng, S. L., Milne, W. I. and Ferrari, A. C., 2008. Self-assembled nanotube field-effect transistors for label-free protein biosensors. Journal of Applied Physics, 104 (7), 074310.

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Official URL:

http://link.aip.org/link/?JAPIAU/104/074310/1

Abstract

A self-assembly method is developed to fabricate single-wall carbon nanotube field-effect transistors (SWNT-FETs). The electrode surface and the area between electrodes are modified with nonpolar groups (-CH3) and polar groups (-NH3+). SWNTs are selectively placed in the area between the electrodes. We achieve stability and specificity in label-free protein detection using the biotin-streptavidin pair as research model. Our process holds promise for high integration of SWNT-FET biosensors, with no need for high-temperature processing. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2988274]

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