Magnetomotive drive and detection of clamped-clamped mechanical resonators in water

Details Magnetomotive drive and detection of clamped-clamped mechanical resonators in water Magnetomotive drive and detection of clamped-clamped mechanical resonators in water

2010-01-14

arxiv.org/abs/1001.2497v1

Appl. Phys. Lett. 95, 263103 (2009)

Physics

Instrumentation and Detectors

4 pages, 3 figures

Scientific paper

10.1063/1.3275014

We demonstrate magnetomotive drive and detection of doubly clamped string resonators in water. A compact 1.9 T permanent magnet is used to detect the fundamental and higher flexural modes of $\mathrm{200 \mu m}$ long resonators. Good agreement is found between the magnetomotive measurements and optical measurements performed on the same resonator. The magnetomotive detection scheme can be used to simultaneously drive and detect multiple sensors or scanning probes in viscous fluids without alignment of detector beams.

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