Investigation of Size Dependence on Sensitivity for Nanowire FET Biosensors
- Authors
- Ahn, Jae-Hyuk; Choi, Sung-Jin; Han, Jin-Woo; Park, Tae Jung; Lee, Sang Yup; Choi, Yang-Kyu
- Issue Date
- Nov-2011
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Biosensor; capacitive model; double gate (DG); field-effect transistor (FET); nanowire (NW)
- Citation
- IEEE TRANSACTIONS ON NANOTECHNOLOGY, v.10, no.6, pp 1405 - 1411
- Pages
- 7
- Journal Title
- IEEE TRANSACTIONS ON NANOTECHNOLOGY
- Volume
- 10
- Number
- 6
- Start Page
- 1405
- End Page
- 1411
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/27770
- DOI
- 10.1109/TNANO.2011.2157519
- ISSN
- 1536-125X
- Abstract
- Label-free electrical detection of biomolecules is demonstrated with a double-gate (DG) nanowire (NW) field-effect transistor (FET). Experimental results confirm that detection sensitivity is favorably improved by the increment of NW size in the DG-NWFET, whereas it is enhanced by the decrement of NW size in a conventional single-gate (SG) NWFET. Sensitivity improvement by the augmentation of the NW size in the DG-FET paves the way to overcome technical challenges we face in achieving ultimate miniaturization of the NW size in the SG-FET. This result is comprehensively understood by simple capacitive modeling. The proposed model explains the observed experimental data and provides a design guideline for highly sensitive NW biosensors.
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Collections - College of Natural Sciences > Department of Chemistry > 1. Journal Articles
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