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DNA Gating effect from single layer graphene

Published online by Cambridge University Press:  30 August 2011

Jian Lin ,
Desalegne Teweldebrhan ,
Khalid Ashraf ,
Guanxiong Liu ,
Xiaoye Jing ,
Zhong Yan ,
Mihrimah Ozkan ,
Roger K. Lake ,
Alexander A. Balandin  and
Cengiz S. Ozkan
Jian Lin
Affiliation:
Department of Mechanical engineering, University of California at Riverside, Riverside, CA 92521, U.S.A. Department of Electrical engineering, University of California at Riverside, Riverside, CA 92521, U.S.A.
Desalegne Teweldebrhan
Affiliation:
Department of Electrical engineering, University of California at Riverside, Riverside, CA 92521, U.S.A.
Khalid Ashraf
Affiliation:
Department of Electrical engineering, University of California at Riverside, Riverside, CA 92521, U.S.A.
Guanxiong Liu
Affiliation:
Department of Electrical engineering, University of California at Riverside, Riverside, CA 92521, U.S.A.
Xiaoye Jing
Affiliation:
Department of Electrical engineering, University of California at Riverside, Riverside, CA 92521, U.S.A.
Zhong Yan
Affiliation:
Department of Electrical engineering, University of California at Riverside, Riverside, CA 92521, U.S.A.
Mihrimah Ozkan
Affiliation:
Department of Electrical engineering, University of California at Riverside, Riverside, CA 92521, U.S.A.
Roger K. Lake
Affiliation:
Department of Electrical engineering, University of California at Riverside, Riverside, CA 92521, U.S.A.
Alexander A. Balandin
Affiliation:
Department of Electrical engineering, University of California at Riverside, Riverside, CA 92521, U.S.A. Department of Material science and engineering, University of California at Riverside, Riverside, CA 92521, U.S.A.
Cengiz S. Ozkan
Affiliation:
Department of Mechanical engineering, University of California at Riverside, Riverside, CA 92521, U.S.A. Department of Material science and engineering, University of California at Riverside, Riverside, CA 92521, U.S.A.
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Abstract

In this letter, single stranded Deoxyribonucleic Acids (ssDNA) are found to act as negative potential gating agents that increase the hole density in single layer graphene (SLG). Current-voltage measurement of the hybrid ssDNA/graphene system indicates a shift in the Dirac point and “intrinsic” conductance after ssDNA is patterned. The effect of ssDNA is to increase the hole density in the graphene layer, which is calculated to be on the order of 1.8×1012 cm-2. This increased density is consistent with the Raman frequency shifts in the G-peak and 2D band positions and the corresponding changes in the G-peak full-width half maximum. This patterning of DNA on graphene layers could provide new avenues to modulate their electrical properties and for novel electronic devices.

Keywords

electrical propertiesRaman spectroscopybiomaterial
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1344: Symposium Y – Functional Two-Dimensional Layered Materials—From Graphene to Topological Insulators , 2011 , mrss11-1344-y03-28
Copyright
Copyright © Materials Research Society 2011

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References

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