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| Home > Publications database > Biosensing near the neutrality point of graphene > print |
| 001 | 838721 | ||
| 005 | 20240619091230.0 | ||
| 024 | 7 | _ | |a 10.1126/sciadv.1701247 |2 doi |
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| 082 | _ | _ | |a 500 |
| 100 | 1 | _ | |a Fu, Wangyang |0 0000-0002-1090-0411 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Biosensing near the neutrality point of graphene |
| 260 | _ | _ | |a Washington, DC [u.a.] |c 2017 |b Assoc. |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a Over the past decade, the richness of electronic properties of graphene has attracted enormous interest for electrically detecting chemical and biological species using this two-dimensional material. However, the creation of practical graphene electronic sensors greatly depends on our ability to understand and maintain a low level of electronic noise, the fundamental reason limiting the sensor resolution. Conventionally, to reach the largest sensing response, graphene transistors are operated at the point of maximum transconductance, where 1/f noise is found to be unfavorably high and poses a major limitation in any attempt to further improve the device sensitivity. We show that operating a graphene transistor in an ambipolar mode near its neutrality point can markedly reduce the 1/f noise in graphene. Remarkably, our data reveal that this reduction in the electronic noise is achieved with uncompromised sensing response of the graphene chips and thus significantly improving the signal-to-noise ratio—compared to that of a conventionally operated graphene transistor for conductance measurement. As a proof-of-concept demonstration of the usage of the aforementioned new sensing scheme to a broader range of biochemical sensing applications, we selected an HIV-related DNA hybridization as the test bed and achieved detections at picomolar concentrations. |
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| 700 | 1 | _ | |a Feng, Lingyan |0 0000-0001-9817-8680 |b 1 |
| 700 | 1 | _ | |a Panaitov, Gregory |0 P:(DE-Juel1)128715 |b 2 |
| 700 | 1 | _ | |a Kireev, Dmitry |0 P:(DE-Juel1)159559 |b 3 |
| 700 | 1 | _ | |a Mayer, Dirk |0 P:(DE-Juel1)128707 |b 4 |
| 700 | 1 | _ | |a Offenhäusser, Andreas |0 P:(DE-Juel1)128713 |b 5 |
| 700 | 1 | _ | |a Krause, Hans-Joachim |0 P:(DE-Juel1)128697 |b 6 |
| 773 | _ | _ | |a 10.1126/sciadv.1701247 |g Vol. 3, no. 10, p. e1701247 - |0 PERI:(DE-600)2810933-8 |n 10 |p e1701247 - |t Science advances |v 3 |y 2017 |x 2375-2548 |
| 856 | 4 | _ | |y OpenAccess |u https://juser.fz-juelich.de/record/838721/files/e1701247.full.pdf |
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