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arXiv · 1808.06775

Sensing and cooling of a nanomechanical resonator with an electron beam stimulated internal feedback and a capacitive force

A. Descombin·S. Perisanu·P. Poncharal·P. Vincent·S. Purcell·A. Ayari
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Abstract

A model for the cooling properties of a nanocantilever by a free electron beam is presented for a capacitive interaction. The optimal parameters for position sensing and cooling applications are estimated from previous experimental conditions. In particular , we demonstrate that a purely capacitive force and an electron beam stimulated internal feedback can lower the temperature of a nanocantilever by several orders of magnitude in striking contrast with the conventional electrostatic damping regime. We propose a step by step protocol to extract the interdependent parameters of the experiments. This work will aid future developments of ultra sensitive force sensors in electron microscopes.

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A. Descombin, S. Perisanu, P. Poncharal, P. Vincent, S. Purcell, A. Ayari. 2018-08-21. Sensing and cooling of a nanomechanical resonator with an electron beam stimulated internal feedback and a capacitive force. https://doi.org/10.1063/1.5036613

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