Skip to content
VuFind
  • 0 Items in e-Shelf (Full)
  • History
  • User Account
  • Logout
  • User Account
  • Help
    • English
    • Deutsch
  • Books & more
  • Articles & more
  • JuSER
Advanced
 
  • Literature Request
  • Cite this
  • Email this
  • Export
    • Export to RefWorks
    • Export to EndNoteWeb
    • Export to EndNote
    • Export to MARC
    • Export to MARCXML
    • Export to BibTeX
  • Favorites
  • Add to e-Shelf Remove from e-Shelf



QR Code
This title appears in the Scientific Report : 2017 

Biosensing near the neutrality point of graphene

Biosensing near the neutrality point of graphene

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 und...

More

Saved in:
Personal Name(s): Fu, Wangyang (Corresponding author)
Feng, Lingyan / Panaitov, Gregory / Kireev, Dmitry / Mayer, Dirk / Offenhäusser, Andreas / Krause, Hans-Joachim
Contributing Institute: JARA-FIT; JARA-FIT
Bioelektronik; ICS-8
Published in: Science advances, 3 (2017) 10, S. e1701247 -
Imprint: Washington, DC [u.a.] Assoc. 2017
DOI: 10.1126/sciadv.1701247
PubMed ID: 29075669
Document Type: Journal Article
Research Program: Controlling Configuration-Based Phenomena
Physical Basis of Diseases
Engineering Cell Function
Link: OpenAccess
OpenAccess
Publikationsportal JuSER
Please use the identifier: http://hdl.handle.net/2128/15736 in citations.
Please use the identifier: http://dx.doi.org/10.1126/sciadv.1701247 in citations.

  • Description
  • Staff View

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.

  • Forschungszentrum Jülich
  • Central Library (ZB)
  • Powered by VuFind 6.1.1
Loading...