Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session B20: DSOFT Prize Session: Emergent Mechanics of Active, Robotic, and Living Materials I
11:30 AM–2:18 PM,
Monday, March 14, 2022
Room: McCormick Place W-185BC
Sponsoring
Units:
DSOFT GSNP
Chair: Corentin Coulais, University of Amsterdam
Abstract: B20.00003 : Elasticity- and consensus-based mechanisms for self-organization in active systems*
12:18 PM–12:30 PM
Presenter:
Amir Shee
(Northwestern Institute on Complex Systems (NICO))
Authors:
Amir Shee
(Northwestern Institute on Complex Systems (NICO))
Cristián Huepe
(Professor, Northwestern University (Evanston IL, USA))
In this work, we consider models with two distinct classes of interactions. In the first class, where interactions are based on relative headings, collective motion results from a standard decentralized consensus process that resembles ferromagnetic ordering and is driven by local alignment forces. In the second class, where they are based on relative positions, self-organization emerges from a novel elasticity-driven process resulting from local attraction-repulsion forces. Using simulations and analytical calculations, we show that these different interactions lead to distinct self-organizing mechanisms and characterize their properties. By developing a formalism based on elastic modes, we show that both mechanisms follow different principles and can reach different self-organized states.
*This project was made possible through the support of Grant 62213 from the John Templeton Foundation.
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