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Frequency fluctuations in silicon nanoresonators

Sansa, Marc and Sage, Eric and Bullard, Elizabeth C and Gely, Marc and Alava, Thomas and Colinet, Eric and Naik, Akshay K and Villanueva, Luis Guillermo and Duraffourg, Laurent and Roukes, Michael L and Jourdan, Guillaume and Hentz, Sebastien (2016) Frequency fluctuations in silicon nanoresonators. In: NATURE NANOTECHNOLOGY, 11 (6). 552+.

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Official URL: http://dx.doi.org/10.1038/NNANO.2016.19


Frequency stability is key to the performance of nanoresonators. This stability is thought to reach a limit with the resonator's ability to resolve thermally induced vibrations. Although measurements and predictions of resonator stability usually disregard fluctuations in the mechanical frequency response, these fluctuations have recently attracted considerable theoretical interest. However, their existence is very difficult to demonstrate experimentally. Here, through a literature review, we show that all studies of frequency stability report values several orders of magnitude larger than the limit imposed by thermomechanical noise. We studied a monocrystalline silicon nanoresonator at room temperature and found a similar discrepancy. We propose a new method to show that this was due to the presence of frequency fluctuations, of unexpected level. The fluctuations were not due to the instrumentation system, or to any other of the known sources investigated. These results challenge our current understanding of frequency fluctuations and call for a change in practices.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the NATURE PUBLISHING GROUP, MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 30 Jun 2016 04:53
Last Modified: 30 Jun 2016 04:53
URI: http://eprints.iisc.ac.in/id/eprint/54088

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