DNA sensing by field-effect transistors based on networks of carbon nanotubes

Ling Gui Ee; Lain Jong Li; Keke Zhang; Yangping Xu; Xiaochen Dong; Xinning Ho; See Lee Pooi; Johnson Kasim; Z. X. Shen; John A. Rogers; S. G. Mhaisalkar

doi:10.1021/ja075176g

DNA sensing by field-effect transistors based on networks of carbon nanotubes

Ling Gui Ee, Lain Jong Li, Keke Zhang, Yangping Xu, Xiaochen Dong, Xinning Ho, See Lee Pooi, Johnson Kasim, Z. X. Shen, John A. Rogers, S. G. Mhaisalkar

Research output: Contribution to journal › Article › peer-review

142 Scopus citations

Abstract

We report on the sensing mechanism of electrical detection of deoxyribonucleic acid (DNA) hybridization for Au- and Cr-contacted field effect transistors based on single-walled carbon nanotube (SWCNT) networks. Barrier height extraction via low-temperature electrical measurement provides direct evidence for the notion that the energy level alignment between electrode and SWCNTs can be affected by DNA immobilization and hybridization. The study of location-selective capping using photoresist provides comprehensive evidence that the sensing of DNA is dominated by the change in metal-SWCNT junctions rather than the channel conductance.

Original language	English
Pages (from-to)	14427-14432
Number of pages	6
Journal	Journal of the American Chemical Society
Volume	129
Issue number	46
DOIs	https://doi.org/10.1021/ja075176g
State	Published - 21 Nov 2007
Externally published	Yes

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10.1021/ja075176g

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title = "DNA sensing by field-effect transistors based on networks of carbon nanotubes",

abstract = "We report on the sensing mechanism of electrical detection of deoxyribonucleic acid (DNA) hybridization for Au- and Cr-contacted field effect transistors based on single-walled carbon nanotube (SWCNT) networks. Barrier height extraction via low-temperature electrical measurement provides direct evidence for the notion that the energy level alignment between electrode and SWCNTs can be affected by DNA immobilization and hybridization. The study of location-selective capping using photoresist provides comprehensive evidence that the sensing of DNA is dominated by the change in metal-SWCNT junctions rather than the channel conductance.",

author = "Ee, {Ling Gui} and Li, {Lain Jong} and Keke Zhang and Yangping Xu and Xiaochen Dong and Xinning Ho and Pooi, {See Lee} and Johnson Kasim and Shen, {Z. X.} and Rogers, {John A.} and Mhaisalkar, {S. G.}",

year = "2007",

month = nov,

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doi = "10.1021/ja075176g",

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T1 - DNA sensing by field-effect transistors based on networks of carbon nanotubes

AU - Ee, Ling Gui

AU - Li, Lain Jong

AU - Zhang, Keke

AU - Xu, Yangping

AU - Dong, Xiaochen

AU - Ho, Xinning

AU - Pooi, See Lee

AU - Kasim, Johnson

AU - Shen, Z. X.

AU - Rogers, John A.

AU - Mhaisalkar, S. G.

PY - 2007/11/21

Y1 - 2007/11/21

N2 - We report on the sensing mechanism of electrical detection of deoxyribonucleic acid (DNA) hybridization for Au- and Cr-contacted field effect transistors based on single-walled carbon nanotube (SWCNT) networks. Barrier height extraction via low-temperature electrical measurement provides direct evidence for the notion that the energy level alignment between electrode and SWCNTs can be affected by DNA immobilization and hybridization. The study of location-selective capping using photoresist provides comprehensive evidence that the sensing of DNA is dominated by the change in metal-SWCNT junctions rather than the channel conductance.

AB - We report on the sensing mechanism of electrical detection of deoxyribonucleic acid (DNA) hybridization for Au- and Cr-contacted field effect transistors based on single-walled carbon nanotube (SWCNT) networks. Barrier height extraction via low-temperature electrical measurement provides direct evidence for the notion that the energy level alignment between electrode and SWCNTs can be affected by DNA immobilization and hybridization. The study of location-selective capping using photoresist provides comprehensive evidence that the sensing of DNA is dominated by the change in metal-SWCNT junctions rather than the channel conductance.

UR - http://www.scopus.com/inward/record.url?scp=36448953512&partnerID=8YFLogxK

U2 - 10.1021/ja075176g

DO - 10.1021/ja075176g

M3 - 文章

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AN - SCOPUS:36448953512

SN - 0002-7863

VL - 129

SP - 14427

EP - 14432

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 46

ER -

DNA sensing by field-effect transistors based on networks of carbon nanotubes

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