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Memory of elastic collisions drives high minority spin and oscillatory entropy in underdamped chiral spinners

Physics

Memory of elastic collisions drives high minority spin and oscillatory entropy in underdamped chiral spinners

S. Li, T. V. Phan, et al.

Explore the intriguing dynamics of chiral spinners on an air table in this groundbreaking study by Shengkai Li, Trung V. Phan, Gao Wang, Ramzi Khuri, Jared W. Wilson, Robert H. Austin, and Liyu Liu. Discover the fascinating phenomenon of 'minority spin pumping' and the unexpected oscillations in entropy production within underdamped active matter. This research promises to challenge your understanding of spin dynamics!

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Playback language: English
Abstract
This paper investigates the dynamics of chiral spinners on an air table, focusing on the effects of inertial underdamped collisions. The authors observe a phenomenon of "minority spin pumping," where a minority of spinners with a specific handedness exhibit significantly higher spin levels than the majority. This is attributed to the memory-preserving nature of underdamped collisions, leading to different spin-angular momentum redistribution between same-handed and opposite-handed collisions. The study also reveals counter-intuitive oscillations in entropy production and flow, highlighting the unique behavior of underdamped active matter.
Publisher
Communications Physics
Published On
Apr 27, 2024
Authors
Shengkai Li, Trung V. Phan, Gao Wang, Ramzi Khuri, Jared W. Wilson, Robert H. Austin, Liyu Liu
Tags
chiral spinners
underdamped collisions
minority spin pumping
spin-angular momentum
entropy production
active matter
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