Abstract
A process technology was developed for transferring strained graphene sheets using an elastomer nanosheet to enhance the resonance characteristics of a graphene resonator. The strain-induced graphene resonator demonstrated a 1.80-fold improvement in the product of resonant frequency and Q-factor compared to the unstrained resonator. The system exhibited a frequency change in response to single inactivated SARS-CoV-2 whole virus by functionalizing the surface of the strained suspended graphene with a DNA aptamer, indicating a mass sensitivity of 0.99 zg Hz-1, which is 3.5 × 106 times greater than conventional chemisorption-based resonant mass sensors.
Published Version
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