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. 2015 Oct 9;6:8569. doi: 10.1038/ncomms9569

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(a) Optical image of a monolayer WS₂ BG-FET. (b) Room-temperature output characteristics of the BG-FET. (c) Logarithmic transfer characteristics of the BG-FET with 5-V applied bias voltage V_ds. (d) A summary of the room-temperature carrier mobility and the corresponding current ON/OFF ratio of nine monolayer WS₂ BG-FETs.