Giant resonance tuning of micro and nanomechanical oscillators.

ABSTRACT: We present a method to tune the resonance frequency and the Q-factor of micro and nano-metric mechanical oscillators. A counteracting loop drives a capacitive force applied to the oscillator. The proportional and differential gains are used to shift the resonance frequency up to 75% and to tune the Q-factor of the oscillator, by changing its effective stiffness and damping ratio. The oscillator position is monitored in a large bandwidth with a fiber-optic based interferometer. We applied this simple operational scheme with different oscillators for modifying easily their dynamical properties. Compared to alternative methods requiring external fields, our method can either increase or decrease the resonance frequency in a frequency range much more extended. This opens up a wide range of app

SUBMITTER: Vitorino MV 

PROVIDER: S-EPMC4295088 | biostudies-literature | 2015 Jan

REPOSITORIES: biostudies-literature