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Silicon Nanotube Tunnel FET as a label free biosensor

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Main Authors: Avtar, Singh, Ashenafi Fekadu Shifaw, Dereje Tekilu, GangiregulaSubbaRao, Chanda, Manash
Other Authors: avtar.ju@gmail.com
Format: Article
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2021
Subjects:
Silicon Nanotube FET
Tunnel FET
Biosensor
Ambipolar
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72949
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spelling my.unimap-729492021-12-20T06:56:58Z Silicon Nanotube Tunnel FET as a label free biosensor Avtar, Singh Ashenafi Fekadu Shifaw Dereje Tekilu GangiregulaSubbaRao Chanda, Manash avtar.ju@gmail.com Silicon Nanotube FET Tunnel FET Biosensor Ambipolar Link to publisher's homepage at http://ijneam.unimap.edu.my In this paper, we propose a Silicon Nanotube Tunnel FET-based biosensor in which ambipolar current is used as the sensitivity parameter. For fast switching low power consumption and steeper sub-threshold slope, aluminum (Al) is utilized as a source. A nanogap cavity-based tunnel FET biosensor is already demonstrated but Silicon Nanotube-based TFET biosensor is proposed for the first time. The result shows better sensitivity concerning the two different effects i.e., dielectric constant (k) and the charge of the biomolecules (positive or negative). For the practical realization of the band to band tunneling, the Kane model is employed in this work. The length of the cavity region is the main parameter to optimize the sensitivity. It shows superior results in dielectric modulation effects and higher ambipolar sensitivity even at lower concentrations of biomolecules. Band diagrams and electric field lines are analyzed to observe the performance of the biosensor. On increasing the value of the dielectric constant (k) from 5 to 20, the sensitivity of the biosensor is reduced by 3 times. It could be used in array-type screening and for DNA-based bio genre diagnostics. It has been observed that when we use the TFET as a biosensor, the leakage is minimum and the sensitivity is maximum. 2021-12-20T06:56:58Z 2021-12-20T06:56:58Z 2021-07 Article International Journal of Nanoelectronics and Materials, vol.14(3), 2021, pages 229-236 1985-5761 (Printed) 1997-4434 (Online) http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72949 http://ijneam.unimap.edu.my en Universiti Malaysia Perlis (UniMAP)
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Silicon Nanotube FET
Tunnel FET
Biosensor
Ambipolar
spellingShingle Silicon Nanotube FET
Tunnel FET
Biosensor
Ambipolar
Avtar, Singh
Ashenafi Fekadu Shifaw
Dereje Tekilu
GangiregulaSubbaRao
Chanda, Manash
Silicon Nanotube Tunnel FET as a label free biosensor
description Link to publisher's homepage at http://ijneam.unimap.edu.my
author2 avtar.ju@gmail.com
author_facet avtar.ju@gmail.com
Avtar, Singh
Ashenafi Fekadu Shifaw
Dereje Tekilu
GangiregulaSubbaRao
Chanda, Manash
format Article
author Avtar, Singh
Ashenafi Fekadu Shifaw
Dereje Tekilu
GangiregulaSubbaRao
Chanda, Manash
author_sort Avtar, Singh
title Silicon Nanotube Tunnel FET as a label free biosensor
title_short Silicon Nanotube Tunnel FET as a label free biosensor
title_full Silicon Nanotube Tunnel FET as a label free biosensor
title_fullStr Silicon Nanotube Tunnel FET as a label free biosensor
title_full_unstemmed Silicon Nanotube Tunnel FET as a label free biosensor
title_sort silicon nanotube tunnel fet as a label free biosensor
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2021
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72949
_version_ 1724609975114792960
score 13.214268

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