Stamp transferred suspended graphene mechanical resonators for radio frequency electrical readout

Xuefeng Song, Mika Oksanen, Mika A. Sillanpää, H. G. Craighead, J. M. Parpia, Pertti J. Hakonen

Research output: Contribution to journalArticle

90 Scopus citations

Abstract

We present a simple micromanipulation technique to transfer suspended graphene flakes onto any substrate and to assemble them with small localized gates into mechanical resonators. The mechanical motion of the graphene is detected using an electrical, radio frequency (RF) reflection readout scheme where the time-varying graphene capacitor reflects a RF carrier at f = 5-6 GHz producing modulation sidebands at f ± f m. A mechanical resonance frequency up to f m = 178 MHz is demonstrated. We find both hardening/softening Duffing effects on different samples and obtain a critical amplitude of ∼40 pm for the onset of nonlinearity in graphene mechanical resonators. Measurements of the quality factor of the mechanical resonance as a function of dc bias voltage V dc indicates that dissipation due to motion-induced displacement currents in graphene electrode is important at high frequencies and large V dc.

Original languageEnglish (US)
Pages (from-to)198-202
Number of pages5
JournalNano Letters
Volume12
Issue number1
DOIs
StatePublished - Jan 11 2012

Keywords

  • cavity read-out
  • Duffing oscillator
  • Graphene
  • mechanical resonator
  • NEMS

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

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