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Title: The dynamics of an externally driven nanoscale beam that is under high tension and immersed in a viscous fluid
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 experiments, and the validity of a simplified string approximation is demonstrated.  more » « less
Award ID(s):
2001559 2001403 1934271
Author(s) / Creator(s):
; ; ;
Date Published:
Journal Name:
Journal of Applied Physics
Page Range / eLocation ID:
Medium: X
Sponsoring Org:
National Science Foundation
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