High-Frequency Stochastic Switching of Graphene Resonators Near Room Temperature

• DOI: 10.1021/acs.nanolett.8b04862
• Publication Date: 2019-01-25T18:37:28Z
• Authors: Robin J. Dolleman; Pierpaolo Belardi...; Samer Houri; Herre S. J. van d...; Farbod Alijani; Peter G. Steeneken
• Keywords: Bistability; Microscale chemistry; Switching time

Stochastic switching between the two bistable states of a strongly driven mechanical resonator enables detection weak signals based on probability distributions, in manner that mimics biological systems. However, conventional silicon resonators at microscale require large amount fluctuation power to achieve rate order few Hertz. Here, we employ graphene membrane atomic thickness stochastic 7.8 kHz, which is 200 times faster than current state-of-the-art. The (effective) temperature fluctuations approximately 400 K, 3000 lower This shows these membranes are potentially useful transduce audible frequency domain. Furthermore, perform numerical simulations understand transition dynamics and derive simple analytical expressions investigate relevant scaling parameters allow high-frequency, low-temperature be achieved resonators.