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arXiv · 2207.10750

The dynamics of an externally driven nanoscale beam that is under high tension and immersed in a viscous fluid

Johnathon Barbish·Chaoyang Ti·Kamil Ekinci·Mark Paul
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Abstract

We explore the dynamics of a nanoscale doubly-clamped beam that is under high tension, immersed in a viscous fluid, and driven externally by a spatially varying drive force. We develop a theoretical description that is valid for all possible values of tension, includes the motion of the higher modes of the beam, and accounts for a harmonic force that is applied over a limited spatial region of the beam near its ends. We compare our theoretical predictions with experimental measurements for a nanoscale beam that is driven electrothermally and immersed in air and water. The theoretical predictions show good agreement with experiment and the validity of a simplified string approximation is demonstrated.

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Johnathon Barbish, Chaoyang Ti, Kamil Ekinci, Mark Paul. 2022-07-21. The dynamics of an externally driven nanoscale beam that is under high tension and immersed in a viscous fluid. https://doi.org/10.1063/5.0100462

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