Comparing schemes of displacement detection and subharmonic generation in nanomachined mechanical resonators

Details Comparing schemes of displacement detection and subharmonic generation in nanomachined mechanical resonators Comparing schemes of displacement detection and subharmonic generation in nanomachined mechanical resonators

2000-11-17

arxiv.org/abs/cond-mat/0011299v4

Physics

Condensed Matter

8 pages, 3 figures

Scientific paper

We present measurements on nanomechanical resonators operating in the radio frequency range. We apply a setup which allows the comparison of two schemes of displacement detection for mechanical resonators, namely conventional power reflection measurements of a probing signal and direct detection by capacitive coupling via a gate electrode. For capacitive detection, we employ an on-chip preamplifier, which enables direct measurements of the resonator's displacement. We observe that the response of the mechanical resonator depends on the detection technique applied, which is verified in model calculations. We show results on the detection of subharmonics.-Paper withdrawn

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