Q-factor control of a microcantilever by mechanical sideband excitation

Venstra, W.J.; Westra, H.J.R.; Van der Zant, H.S.J.

doi:doi:10.1063/1.3650714

Q-factor control of a microcantilever by mechanical sideband excitation

Title

Q-factor control of a microcantilever by mechanical sideband excitation

Author

Venstra, W.J.
Westra, H.J.R.
Van der Zant, H.S.J.

Faculty

Applied Sciences

Department

QN/Quantum Nanoscience

Date

2011-10-10

Abstract

We demonstrate the coupling between the fundamental and second flexural modes of a microcantilever. A mechanical analogue of cavity-optomechanics is then employed, where the mechanical cavity is formed by the second vibrational mode of the same cantilever, coupled to the fundamental mode via the geometric nonlinearity. By exciting the cantilever at the sum and difference frequencies between fundamental and second flexural modes, the motion of the fundamental mode of the cantilever is damped and amplified. This concept makes it possible to enhance or suppress the Q-factor over a wide range.

Subject

cantilevers
cavity resonators
damping
Q-factor
resonance
vibrational modes

To reference this document use:

http://resolver.tudelft.nl/uuid:0d3c16a2-a758-45b3-b47b-c87b05936a3d

DOI

https://doi.org/10.1063/1.3650714

Publisher

American Institute of Physics

ISSN

0003-6951

Source

http://link.aip.org/link/doi/10.1063/1.3650714