Publication date: Jan 29, 2025

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, which is 3. 5 cD7 10 times greater than conventional chemisorption-based resonant mass sensors.

Semantics

Original Article