- Title
- Model-based Q factor control for photothermally excited microcantilevers
- Creator
- Ruppert, Michael G.; Routley, Ben S.; Fleming, Andrew J.; Yong, Yuen K.; Fantner, Georg E.
- Relation
- MARSS 2019: 4th International Conference on Manipulation, Automation, and Robotics at Small Scales. Proceedings of MARSS 2019: 4th International Conference on Manipulation, Automation, and Robotics at Small Scales (Helsinki, Finland 01-05 July, 2019)
- Publisher Link
- http://dx.doi.org/10.1109/MARSS.2019.8860969
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- conference paper
- Date
- 2019
- Description
- Photothermal excitation of the cantilever for dynamic atomic force microscopy (AFM) modes is an attractive actuation method as it provides clean cantilever actuation leading to well-defined frequency responses. Unlike conventional piezo-acoustic excitation of the cantilever, it allows for model-based quality (Q) factor control in order to increase the cantilever tracking bandwidth for tapping-mode AFM or to reduce resonant ringing for high-speed photothermal off-resonance tapping (PORT) in ambient conditions. In this work, we present system identification, controller design and experimental results on controlling the Q factor of a photothermally driven cantilever. The work is expected to lay the groundwork for future implementations for high-speed PORT imaging in ambient conditions.
- Subject
- atomic force microscopy; photothermal actuation; vibration control; system identification; controller design
- Identifier
- http://hdl.handle.net/1959.13/1460179
- Identifier
- uon:45890
- Identifier
- ISBN:9781728109473
- Language
- eng
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