Abstract
In order to perform nanoscale motions in AFM (e.g. during scanning) very precise actuators are required. Piezoelectric actuators achieve the required precision. We describe the principles of operation of these actuators and present examples of specific actuators. In the following principles of vibration isolation are considered, because the amplitude of floor vibrations is much larger than the desired amplitude of the tip-sample vibrations.
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Notes
- 1.
In tables sometimes also the elastic compliance S is used, which corresponds to the reciprocal of Young’s modulus.
- 2.
In this simplified consideration, we have left out the formation energy of domain walls which results in the formation of larger domains. Larger domains mean less domain wall energy. A further contribution in the energy balance is the build up of mechanical strain inside the domains when an external electric field is applied.
- 3.
Note that accelerometers often measure the root mean square (RMS) amplitude which is smaller than the peak amplitude by a factor of \(1/\sqrt{2}\).
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Voigtländer, B. (2019). Technical Aspects of Atomic Force Microscopy. In: Atomic Force Microscopy. NanoScience and Technology. Springer, Cham. https://doi.org/10.1007/978-3-030-13654-3_3
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DOI: https://doi.org/10.1007/978-3-030-13654-3_3
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