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Published February 18, 2002 | Published
Journal Article Open

Spring constant and damping constant tuning of nanomechanical resonators using a single-electron transistor

Schwab, K. ORCID icon


By fabricating a single-electron transistor onto a mechanical system in a high magnetic field, it is shown that one can manipulate both the mechanical spring constant and damping constant by adjusting a potential of a nearby gate electrode. The spring constant effect is shown to be usable to control the resonant frequency of silicon-based nanomechanical resonators, while an additional damping constant effect is relevant for the resonators built upon carbon nanotube or similar molecular-sized materials. This could prove to be a very convenient scheme to actively control the response of nanomechanical systems for a variety of applications including radio-frequency signal processing, ultrasensitive force detection, and fundamental physics explorations.

Additional Information

© 2002 American Institute of Physics. Received 28 September 2001; accepted for publication 11 December 2001. This work is supported by the National Security Agency and ARDA. I would like to acknowledge very helpful conversations with M. L. Roukes, Matt LaHaye, Miles Blencowe, Andrew Armour, and the participants at the QUEST workshop hosted by Los Alamos National Laboratory.

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August 19, 2023
October 18, 2023