期刊
ADVANCED MATERIALS
卷 22, 期 14, 页码 1649-+出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200903645
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资金
- National Research Foundation, Singapore [NRF-CRP-07-2]
- A-Star SERC [072 101 0020]
- 973 Program, China [2009CB930601]
- NSF of Education Committee of Jiangsu Province [TJ207035, 50902071]
- NSF of China [50902071]
- MIT
Large-sized chemical vapor deposited graphene films configured as solution-gated transistors can label-freely and electrically detect DNA hybridization with single-base specificity. The gate voltage which gives the minimum device conductance (V-g,V-min) is sensitive to the charge transfer between DNA molecules and graphene, and thus is used to detect the DNA hybridization. The DNA detection is attributed to the electronic n-doping from DNA to graphene rather than the electrostatic gating effect or impurity screening effect.
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