- Title
- Multimode Q control in tapping-mode AFM: enabling imaging on higher flexural eigenmodes
- Creator
- Ruppert, Michael G.; Moheimani, S. O. Reza
- Relation
- ARC
- Relation
- IEEE Transactions on Control Systems Technology Vol. 24, Issue 4, p. 1149-1159
- Publisher Link
- http://dx.doi.org/10.1109/TCST.2015.2478077
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- journal article
- Date
- 2016
- Description
- Numerous dynamic atomic force micros- copy (AFM) methods have appeared in recent years, which make use of the excitation and detection of higher order eigenmodes of the microcantilever. The ability to control these modes and their responses to excitation is believed to be the key to unraveling the true potential of these methods. In this paper, we highlight a multimode Q control method that exhibits remarkable damping performance and stability robustness. The experimental results obtained in ambient conditions demonstrate improved imaging stability by damping nondriven resonant modes when scanning is performed at a higher eigenmode of the cantilever. Higher scan speeds are shown to result from a decrease in transient response time.
- Subject
- atomic force microscopy; controller design; optimization; positive position feedback (PPF); <i>Q</i> control; resonant control; vibration control
- Identifier
- http://hdl.handle.net/1959.13/1320223
- Identifier
- uon:24097
- Identifier
- ISSN:1063-6536
- Rights
- © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
- Language
- eng
- Full Text
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