Biosensing Performance Optimization of DMFET for Fully Filled and Partially Filled Cavity

2018 IEEE Computer Society Annual Symposium on VLSI (ISVLSI) Pub Date : 2018-07-01 DOI:10.1109/ISVLSI.2018.00059

Ankita Porwal, Chitrakant Sahu

{"title":"Biosensing Performance Optimization of DMFET for Fully Filled and Partially Filled Cavity","authors":"Ankita Porwal, Chitrakant Sahu","doi":"10.1109/ISVLSI.2018.00059","DOIUrl":null,"url":null,"abstract":"In this paper, a p-channel Dielectric Modulated Field Effect Transistor (DMFET) used as a biosensor has been investigated for the detection of the neutral as well as charged biomolecules. To analyze the detection ability and sensitivity of the device various metrics such as electric field, surface potential, drain current and transconductance are investigated under different bias conditions. For the detection of biomolecules in the cavity, change in threshold voltage is used as sensing parameter. The device shows a threshold voltage shift of 360 mV for K=5. The device sensitivity is observed at different dielectrics and it is found that drain current sensitivity increases with the increasing value of the dielectric constants. The transconductance of the device increases by a value of 6 × 10^-5 A/V for a biosample with K=5 in the cavity. The fabrication process flow of the device has also been proposed to the minimum involvement of complex processes. Further, performance metrics are analyzed at the partially filled cavity and fully filled cavity to observe the effectiveness of this device in the detection of the neutral and charged biomolecules","PeriodicalId":114330,"journal":{"name":"2018 IEEE Computer Society Annual Symposium on VLSI (ISVLSI)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 IEEE Computer Society Annual Symposium on VLSI (ISVLSI)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISVLSI.2018.00059","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

Abstract

In this paper, a p-channel Dielectric Modulated Field Effect Transistor (DMFET) used as a biosensor has been investigated for the detection of the neutral as well as charged biomolecules. To analyze the detection ability and sensitivity of the device various metrics such as electric field, surface potential, drain current and transconductance are investigated under different bias conditions. For the detection of biomolecules in the cavity, change in threshold voltage is used as sensing parameter. The device shows a threshold voltage shift of 360 mV for K=5. The device sensitivity is observed at different dielectrics and it is found that drain current sensitivity increases with the increasing value of the dielectric constants. The transconductance of the device increases by a value of 6 × 10^-5 A/V for a biosample with K=5 in the cavity. The fabrication process flow of the device has also been proposed to the minimum involvement of complex processes. Further, performance metrics are analyzed at the partially filled cavity and fully filled cavity to observe the effectiveness of this device in the detection of the neutral and charged biomolecules

查看原文本刊更多论文

DMFET全填充和部分填充腔生物传感性能优化

本文研究了一种p通道介质调制场效应晶体管(DMFET)作为生物传感器，用于检测中性和带电生物分子。为了分析该器件在不同偏置条件下的检测能力和灵敏度，研究了电场、表面电位、漏极电流和跨导等指标。对于腔内生物分子的检测，采用阈值电压的变化作为传感参数。当K=5时，器件显示出360 mV的阈值电压偏移。对器件在不同介质下的灵敏度进行了观察，发现漏极电流灵敏度随介质常数的增大而增大。对于腔内K=5的生物样品，器件的跨导增加了6 × 10^-5 a /V。该装置的制造工艺流程也提出了最小的复杂过程的参与。进一步，分析了部分填充腔和完全填充腔的性能指标，以观察该装置在检测中性和带电生物分子方面的有效性

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2018 IEEE Computer Society Annual Symposium on VLSI (ISVLSI)

自引率

0.00%

发文量