Abstract
We investigate the dynamics of a microcantilever subjected to the combined forcing from Brownian motion and delayed self-feedback. Specifically, the excitation of the fundamental mode of the cantilever by thermomechanical agitation is utilized as delayed external forcing and the resulting dynamical response is studied as a function of the delay and the coupling strength. A fluctuation-dissipation theorem is derived from the delay Langevin-like equation and its validity is discussed. The relaxation time scale associated with the adsorption processes is established and an experiment to determine the oscillator's effective temperature is proposed.
| Original language | English |
|---|---|
| Article number | 114314 |
| Journal | Journal of Applied Physics |
| Volume | 100 |
| Issue number | 11 |
| DOIs | |
| State | Published - 2006 |
Funding
This work was supported in part by the DOE ERSP and DOE NA22. V.P. acknowledges partial support from the Materials Science and Engineering Program of DOE's Office of Basic Energy Sciences and from the SensorNet Program. Oak Ridge National Laboratory, Oak Ridge, Tennessee, is managed by UT-Battelle, LLC for the Department of Energy under Contract No. DE-AC05–0096OR22725.
| Funders | Funder number |
|---|---|
| DOE NA22 | |
| U.S. Department of Energy | DE-AC05–0096OR22725 |
| Basic Energy Sciences |