Parametric amplification in a torsional microresonator

Dustin W. Carr, Stephane Evoy, Lidija Sekaric, H. G. Craighead, J. M. Parpia

    Research output: Contribution to journalArticlepeer-review

    161 Scopus citations

    Abstract

    We observe parametric amplification in a torsional micron-scale mechanical resonator. An applied voltage is used to make a dynamic change to the torsional spring constant. Oscillating the spring constant at twice the resonant frequency results in a phase dependent amplification of the resonant motion. Our results agree well with the theory of parametric amplification. By taking swept frequency measurements, we observe interesting structure in the resonant response curves.

    Original languageEnglish (US)
    Pages (from-to)1545-1547
    Number of pages3
    JournalApplied Physics Letters
    Volume77
    Issue number10
    DOIs
    StatePublished - Sep 4 2000

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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