Spin-induced lateral acoustic forces on chiral and achiral particles
Abstract
Acoustic spin enables intriguing chiral sound-matter interactions, yet its mechanical consequences remain much less explored. Here, we demonstrate spin-induced lateral acoustic forces on chiral and achiral particles coupled to a substrate. Under plane-wave incidence, left- and right-handed chiral particles scatter fields with opposite acoustic spin that selectively couple to counterpropagating guided waves, generating lateral forces of opposite signs on the enantiomers. The lateral forces can also be realized for achiral particles by employing acoustic vortex-beam illumination. We experimentally validate the spin-dependent excitation of guided waves and lateral forces. Our results provide a route to spin-controlled acoustic manipulation and chirality-selective particle transport.
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BibTeX
@misc{jia2026spininduced,
title = {{Spin-induced lateral acoustic forces on chiral and achiral particles}},
author = {Yurou Jia and Shanjun Liang and Wanyue Xiao and Shubo Wang},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.01852},
eprint = {2611.01852},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.01852},
}
RIS
TY - UNPB
TI - Spin-induced lateral acoustic forces on chiral and achiral particles
AU - Yurou Jia
AU - Shanjun Liang
AU - Wanyue Xiao
AU - Shubo Wang
PY - 2026
DA - 2026/11/01
PB - arXiv
DO - 10.48550/arxiv.2611.01852
UR - https://arxiv.org/abs/2611.01852
AB - Acoustic spin enables intriguing chiral sound-matter interactions, yet its mechanical consequences remain much less explored. Here, we demonstrate spin-induced lateral acoustic forces on chiral and achiral particles coupled to a substrate. Under plane-wave incidence, left- and right-handed chiral particles scatter fields with opposite acoustic spin that selectively couple to counterpropagating guided waves, generating lateral forces of opposite signs on the enantiomers. The lateral forces can also be realized for achiral particles by employing acoustic vortex-beam illumination. We experimentally validate the spin-dependent excitation of guided waves and lateral forces. Our results provide a route to spin-controlled acoustic manipulation and chirality-selective particle transport.
ER -