학술논문
MoS2-Based Dual-Gate mosfet as Ultrasensitive SARs-CoV-2 Biosensor for Rapid Screening of Respiratory Syndrome
Document Type
Periodical
Author
Source
IEEE Sensors Letters IEEE Sens. Lett. Sensors Letters, IEEE. 7(11):1-4 Nov, 2023
Subject
Language
ISSN
2475-1472
Abstract
In this letter, an attempt for rapid detection of biomarkers for SARs-CoV-2 virus is initiated for the first time, employing MoS 2= based dual-gate mosfet with embedded nanogap in the gate dielectric. Based on the spike, envelope, and DNA proteins of the virus, a deep analysis of the device performance in terms of transfer characteristics I on /I off ratio is performed using SILVACO ATLAS TCAD by considering the dielectric constant equivalent of the virus proteins as κ = 4,10,12 and with variation of DNA charge densities as −2 × 10 12 Ccm −2 to +2 × 10 12 Ccm −2 . The threshold voltage (V th ) is eventually extracted and is used as the detection metric to evaluate the sensing ability of the device exhibiting superior V th sensitivity as high as 100 mV as compared to some of the existing models. Results also reveal a high dependency of the sensitivity on the bioelement configuration within the nanogap and the channel material.