Charge and dielectric effects of biomolecules on electrical characteristics of nanowire FET biosensors

Jae Hyuk Ahn, Sung Jin Choi, Maesoon Im, Sungho Kim, Chang Hoon Kim, Jee Yeon Kim, Tae Jung Park, Sang Yup Lee, Yang Kyu Choi

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

The sensing mechanism of nanowire field effect transistor (NWFET) biosensors is investigated by taking into consideration both the charge and dielectric effects of biomolecules. The dielectric effect of the biomolecules is dominantly reflected in the linear regime, whereas the charge property is manifested in the subthreshold regime. The findings are supported by bio-experiments and numerical simulations. This study provides a rudimentary means of understanding interactions between biomolecules and NWFET biosensors.

Original languageEnglish
Article number113701
JournalApplied Physics Letters
Volume111
Issue number11
DOIs
StatePublished - 11 Sep 2017

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© 2017 Author(s).

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