Graphene-Based Nanoelectromechanical Periodic Array with Tunable Frequency.
Nano Lett
; 21(20): 8571-8578, 2021 Oct 27.
Article
en En
| MEDLINE
| ID: mdl-34613727
ABSTRACT
Phononic crystals (PnCs) have attracted much attention due to their great potential for dissipation engineering and propagation manipulation of phonons. Notably, the excellent electrical and mechanical properties of graphene make it a promising material for nanoelectromechanical resonators. Transferring a graphene flake to a prepatterned periodic mechanical structure enables the realization of a PnC with on-chip scale. Here, we demonstrate a nanoelectromechanical periodic array by anchoring a graphene membrane to a 9 × 9 array of standing nanopillars. The device exhibits a quasi-continuous frequency spectrum with resonance modes distributed from â¼120 MHz to â¼980 MHz. Moreover, the resonant frequencies of these modes can be electrically tuned by varying the voltage applied to the gate electrode sitting underneath. Simulations suggest that the observed band-like spectrum provides an experimental evidence for PnC formation. Our architecture has large fabrication flexibility, offering a promising platform for investigations on PnCs with electrical accessibility and tunability.
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01-internacional
Base de datos:
MEDLINE
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En
Revista:
Nano Lett
Año:
2021
Tipo del documento:
Article
País de afiliación:
China