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High-Frequency Nanofluidics: An Experimental Study using Nanomechanical Resonators

D. M. Karabacak·V. Yakhot·K. L. Ekinci
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Abstract

Here we apply nanomechanical resonators to the study of oscillatory fluid dynamics. A high-resonance-frequency nanomechanical resonator generates a rapidly oscillating flow in a surrounding gaseous environment; the nature of the flow is studied through the flow-resonator interaction. Over the broad frequency and pressure range explored, we observe signs of a transition from Newtonian to non-Newtonian flow at $ωτ\approx 1$, where $τ$ is a properly defined fluid relaxation time. The obtained experimental data appears to be in close quantitative agreement with a theory that predicts purely elastic fluid response as $ωτ\to \infty$.

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D. M. Karabacak, V. Yakhot, K. L. Ekinci. 2007-05-02. High-Frequency Nanofluidics: An Experimental Study using Nanomechanical Resonators. https://doi.org/10.1103/physrevlett.98.254505

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