Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/84838
Title: Effect of channel length on the electrical response of carbon nanotube field-effect transistors to deoxyribonucleic acid hybridization
Authors: Salila Vijayalal Mohan, Hari Krishna
An, Jianing
Zhang, Yani
Wong, Chee How
Zheng, Lianxi
Keywords: Carbon nanotubes
Biosensor
Issue Date: 2014
Source: Salila Vijayalal Mohan, H. K., An, J., Zhang, Y., Wong, C. H., & Zheng, L. (2014). Effect of channel length on the electrical response of carbon nanotube field-effect transistors to deoxyribonucleic acid hybridization. Beilstein Journal of Nanotechnology, 5, 2081-2091.
Series/Report no.: Beilstein Journal of Nanotechnology
Abstract: A single-walled carbon nanotube (SWCNT) in a field-effect transistor (FET) configuration provides an ideal electronic path for label-free detection of nucleic acid hybridization. The simultaneous influence of more than one response mechanism in hybridization detection causes a variation in electrical parameters such as conductance, transconductance, threshold voltage and hysteresis gap. The channel length (L) dependence of each of these parameters necessitates the need to include them when interpreting the effect of L on the response to hybridization. Using the definitions of intrinsic effective mobility (µe) and device field-effect mobility (µf), two new parameters were defined to interpret the effect of L on the FET response to hybridization. Our results indicate that FETs with ≈300 µm long SWCNT exhibited the most appreciable response to hybridization, which complied with the variation trend in response to the newly defined parameters.
URI: https://hdl.handle.net/10356/84838
http://hdl.handle.net/10220/41973
ISSN: 2190-4286
DOI: 10.3762/bjnano.5.217
Rights: This is an Open Access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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