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

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 ( − CH 3 ) and polar groups ( − NH 3 + ) . SWNTs are selectively placed in the area between the e...

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Bibliographic Details
Published in:Journal of applied physics 2008-10, Vol.104 (7), p.074310-074310-5
Main Authors: Hu, P., Fasoli, A., Park, J., Choi, Y., Estrela, P., Maeng, S. L., Milne, W. I., Ferrari, A. C.
Format: Article
Language:English
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Summary: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 ( − CH 3 ) and polar groups ( − NH 3 + ) . 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.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.2988274