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Cheng-Te Lin, Phan Thi Kim Loan, Tzu-Yin Chen, Keng-Ku Liu, Chang-Hsiao Chen, Kung-Hwa Wei and Lain-Jong Li Label-Free Electrical Detection of DNA Hybridization on Graphene using Hall Effect Measurements: Revisiting the Sensing Mechanism Advanced Functional Materials 23

Article first published online: 9 JAN 2013 | DOI: 10.1002/adfm.201202672

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Label-free, single-base sequence selective detection of DNA hybridization based on a single-layer graphene device is investigated using Hall effect measurements with the Van der Pauw method. The increase in hole carrier density, indicating p-doping to graphene, is better correlated to the DNA hybridization compared with the commonly used parameters such as conductivity change.

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