Abstract
We present an implementation of pure-time-delay generation in analog signals located in the kilo-Hertz frequency band. The controlled constant delays that are produced engage in a feedback system to investigate the dynamic response of microcantilevers. Delayed systems offer a vast richness of eigenvalues resulting in the possibility of excitations at frequencies other than that of the fundamental mode. Different cantilever actuation and delay generation approaches are investigated and compared, and detailed experimental observation of the dynamic response of the system is presented. Based on our results, an acoustic excitation is devised that may be used as an efficient sensor.
| Original language | English |
|---|---|
| Pages (from-to) | 1020-1026 |
| Number of pages | 7 |
| Journal | Ultramicroscopy |
| Volume | 107 |
| Issue number | 10-11 |
| DOIs | |
| State | Published - Oct 2007 |
Funding
This work was supported by the DOE ERSP. Oak Ridge National Laboratory, Oak Ridge, TN 37831-6123, is managed by UT-Battelle, LLC for the Department of Energy under contract number DE-AC05-0096OR22725.
Keywords
- 018
- 027
- Atomic force microscopy
- Delayed oscillations
- Dynamic control
- Feedback