Year: 2025
Type: article
Abstract: A dielectric modulated dual source triple gate tunnel field effect transistor (DM-DSTG TFET) based biosensors is proposed for the detection of biomolecules, with its performance characteristics rigorously evaluated using the Silvaco Atlas simulator. The dual source is positioned within the two voids of the triple parallel gates, while cavities located between the source, a portion of the channel and the gate are specifically designed for biomolecule conjugation. Variations in the device's electrostatics, including the electric field, surface potential and energy band diagrams, are analyzed in response to changes in the dielectric constant of different biomolecules, thereby reflecting the biorecognition process within the biosensor. The results demonstrate that the proposed device exhibits enhanced sensitivity (10 10 ) and a reduced subthreshold swing (32.7 mV/decade), highlighting its superior performance. The feasibility of the biosensor as a label-free detection platform is further validated using avian influenza virus and DNA as target biomolecules. Consequently, the DM-DSTG TFET based biosensors emerges as a highly promising candidate, offering advanced detection and recognition capabilities for future biosensing applications.
Source: Discover Nano
Authors: Guowei Cui, Huifang Xu
Institution: Anhui Science and Technology University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,090
OpenAlex ID: W4416599176