| Title: |
Limit cycles turn active matter into robots |
| Authors: |
Brandenbourger, Martin; Scheibner, Colin; Veenstra, Jonas; Vitelli, Vincenzo; Coulais, Corentin |
| Contributors: |
University of Amsterdam Amsterdam = Universiteit van Amsterdam (UvA); Université libre de Bruxelles (ULB); Institut de Recherche sur les Phénomènes Hors Equilibre (IRPHE); Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS); James Franck Institute; University of Chicago; M.B. acknowledges funding from the Fonds de la Recherche Scientifique-FNRS. C.S. and V.V. acknowledge support from the Simons Foundation, the Complex Dynamics and Systems Program of the Army Research Office under grant W911NF-19-1-0268, and the University of Chicago Materials Research Science and Engineering Center, which is funded by the National Science Foundation under Award No. DMR-2011854. C.S. acknowledges funding from the National Science Foundation Graduate Research Fellowship under Grant No. 1746045.; European Project: 852587,H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC),10.3030/852587,Extr3Me(2020) |
| Source: |
https://hal.science/hal-04300475 ; 2023. |
| Publisher Information: |
HAL CCSD |
| Publication Year: |
2023 |
| Collection: |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
| Subject Terms: |
[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] |
| Description: |
Active matter composed of energy-generating microscopic constituents is a promising platform to create autonomous functional materials. However, the very presence of these microscopic energy sources is what makes active matter prone to dynamical instabilities and hence hard to control. Here, we show that these instabilities can be coaxed into work-generating limit cycles that turn active matter into robots. We illustrate this general principle in odd active media, model systems whose interaction forces are as simple as textbook molecular bonds yet not constrained to be the gradient of a potential. These emergent robotic functionalities are demonstrated by revisiting what is arguably the oldest of inventions: the wheel. Unlike common wheels that are driven by external torques, an odd wheel undergoes work-generating limit cycles that allow it to roll autonomously uphill by virtue of its own deformation, as demonstrated by our prototypes. Similarly, familiar scattering phenomena, like a ball bouncing off a wall, turn into basic robotic manipulations when either the ball or the wall is odd. Using continuum mechanics, we reveal collective robotic mechanisms that steer the outcome of collisions or influence the absorption of impacts in experiments. Beyond robotics, work-generating limit cycles can also control the non-linear dynamics of active soft materials, biological systems and driven nanomechanical devices. |
| Document Type: |
report |
| Language: |
English |
| Relation: |
info:eu-repo/semantics/altIdentifier/arxiv/2108.08837; info:eu-repo/grantAgreement//852587/EU/Extreme Mechanics of Metamaterials: From ideal to realistic conditions/Extr3Me; hal-04300475; https://hal.science/hal-04300475; https://hal.science/hal-04300475/document; https://hal.science/hal-04300475/file/2108.08837.pdf; ARXIV: 2108.08837 |
| Availability: |
https://hal.science/hal-04300475; https://hal.science/hal-04300475/document; https://hal.science/hal-04300475/file/2108.08837.pdf |
| Rights: |
http://creativecommons.org/licenses/by/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.90D309AC |
| Database: |
BASE |