| Issue |
EPL
Volume 123, Number 3, August 2018
|
|
|---|---|---|
| Article Number | 36002 | |
| Number of page(s) | 6 | |
| Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
| DOI | https://doi.org/10.1209/0295-5075/123/36002 | |
| Published online | 04 September 2018 | |
Edge-mode–based graphene nanomechanical resonators for high-sensitivity mass sensor
Shanghai Institute of Applied Mathematics and Mechanics, Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University - Shanghai 200072, PRC
(a) jwjiang5918@hotmail.com (corresponding author)
Received: 13 May 2018
Accepted: 3 August 2018
We perform both molecular dynamics simulations and theoretical analysis to study the sensitivity of the mass sensor based on graphene nanomechanical resonators, which are actuated following the global extended mode or the localized edge mode. We find that the mass detection sensitivity corresponding to the edge mode is about three times higher than that corresponding to the extended mode. Our analytic derivations reveal that the enhancement of the sensitivity originates from the reduction of the effective mass for the edge mode due to its localizing feature. Our findings shed light on improving the sensitivity of the graphene-based mass spectrometry by utilizing the localized edge mode.
PACS: 62.25.Jk – Mechanical modes of vibration / 46.40.Ff – Resonance, damping, and dynamic stability / 85.85.+j – Micro- and nano-electromechanical systems (MEMS/NEMS) and devices
© EPLA, 2018
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