Motion of Heavy Particles on a Submerged Chladni Plate
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© 2019 American Physical Society.
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School of Electrical Engineering |
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2019
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Language
en
Pages
5
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Physical Review Letters, Volume 122, Issue 18
Abstract
Heavy particles are traditionally believed to gather at the nodes of a resonating plate, forming standard Chladni patterns. Here, for the first time, we experimentally show that heavy particles, i.e., sub-mm particles, can move towards the antinodes of a resonating plate. By submerging the resonating plate inside a fluidic medium, the acoustic radiation force and the lateral effective weight become dominant at the sub-mm scale. Those forces, averaged over a vibration cycle, move the particles towards the antinodes and generate sophisticated patterns. We create a statistical model that relates the complex motion of particles to their locations and plate vibration frequencies in a wide spectrum of both resonant and nonresonant frequencies. Additionally, we employ our model to control the motion of single particles and a swarm of particles on the submerged plate. Our device can move particles with sufficient power at an exceptionally wide frequency range, potentially opening a path to new particle manipulation techniques at sub-mm scale in fluidic media.Description
Keywords
Inverse Chladni pattern, Pattern formation, Acoustic manipulation, Dynamic-filed acoustic device, Model predictive control
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Citation
Latifi, Kourosh & Wijaya, Harri & Zhou, Quan. 2019. Motion of Heavy Particles on a Submerged Chladni Plate. Physical Review Letters. Volume 122, Issue 18. 5. DOI: 10.1103/PhysRevLett.122.184301.