AI Article Synopsis
- - The study explores the behavior and resonance of arrays made from microcantilevers that vary in length and natural frequency, aimed at understanding nondegenerate parametric resonance (NPR).
- - The research involves 200 silicon cantilevers that can oscillate together as a result of specific excitation frequencies, with tunable coupling achieved through electrostatic fields.
- - Experimental findings and a simple model confirm the observed NPR effects, indicating potential applications in sensors, energy harvesting, and advanced mechanical systems.
Article Abstract
We investigate the collective dynamics and nondegenerate parametric resonance (NPR) of coplanar, interdigitated arrays of microcantilevers distinguished by their cantilevers having linearly expanding lengths and thus varying natural frequencies. Within a certain excitation frequency range, the resonators begin oscillating via NPR across the entire array consisting of 200 single-crystal silicon cantilevers. Tunable coupling generated from fringing electrostatic fields provides a mechanism to vary the scope of the NPR. Our experimental results are supported by a reduced-order model that reproduces the leading features of our data including the NPR band. The potential for tailoring the coupled response of suspended mechanical structures using NPR presents new possibilities in mass, force, and energy sensing applications, energy harvesting devices, and optomechanical systems.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6507417 | PMC |
| http://dx.doi.org/10.1103/PhysRevLett.121.264301 | DOI Listing |
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