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The extreme resolution of CO2 gas molecules sensing, i.e., detection of single molecule, is reported. The suspended bilayer graphene beam is exploited in order to isolate the sensing part of the device from the substrate noise. Using the electrostatic force, the central part of the suspended beam is pulled-down to bottom metal electrode, which leads to two slanted graphene beams in suspension with...
We report the sensing of carbon dioxide at the extreme resolution, I.e. the detection of an individual molecular adsorption event. We design a novel architecture of suspended graphene device, where comparable strain was introduced in graphene. With it, electrical field can be introduced to graphene surface by applying back-gate voltage to control the adsorption rates, while the collapsing of graphene...
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