纳米尺度生物传感器设计中介电调制无结晶体管灵敏度的提高

Sensor Letters Pub Date : 2020-04-01 DOI:10.1166/sl.2020.4224

Shradhya Singh, S. Bala, B. Raj, B. Raj

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引用次数: 9

摘要

本工作提出了一种用于生物分子无标签(Label-Free, LF)电特性检测的器件，即介电调制(DM)无结晶体管。用于检测生物分子的电特性是电场、表面电位、漏极电流和阈值电压(Vth)。由于生物分子固定在腔区，阈值电压相对于没有生物分子时发生变化，并以此作为灵敏度指标。采用非对称栅操作可以提高生物分子检测的灵敏度。在非对称模式下，灵敏度几乎是对称模式下的5倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Improved Sensitivity of Dielectric Modulated Junctionless Transistor for Nanoscale Biosensor Design

This work has proposed a device i.e., Dielectric Modulated (DM) Junctionless Transistor which is utilizes as Label-Free (LF) electrical characteristic detection of bio-molecules. The electrical characteristics used for the detection of biomolecules are electric field, surface potential, drain current and threshold voltage (Vth). Due to immobilization of biomolecules in the cavity region, the threshold voltage change in comparison to the absence of biomolecule, which is utilizes as the sensitivity metric. The sensitivity of biomolecule detection can be enhanced by using asymmetric gate operation of the device. In asymmetric mode the degree of sensitivity is almost five times higher than that of the symmetric mode of operation.

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来源期刊

Sensor Letters 工程技术-电化学

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.