Damping-driven time reversal for waves

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Samuel Hidalgo-Caballero
  • Surabhi Kottigegollahalli Sreenivas
  • Vincent Bacot
  • Sander Wildeman
  • Maxime Harazi
  • Xiaoping Jia
  • Arnaud Tourin
  • Mathias Fink
  • Matthieu Labousse
  • Emmanuel Fort

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Detail(s)

Original languageEnglish
Article number087201
Journal / PublicationPhysical Review Letters
Volume138
Issue number8
Online published22 Feb 2023
Publication statusPublished - 24 Feb 2023

Link(s)

Abstract

Damping is usually associated with irreversibility. Here, we present a counter-intuitive concept to perform wave time reversal using a damping shock. A sudden and strong modification of the damping in time generates a time-reversed wave. In the limit of a high damping shock, this amounts to “freezing” the initial wave by maintaining the wave amplitude while canceling its time derivative. The initial wave then splits in two counter-propagating waves with identical profiles, but with time evolutions in opposite directions. We implement this damping-based time-reversal using phonon waves propagating in a lattice of interacting magnets placed on an air cushion. We show with computer simulations that this concept also applies to broad-band time-reversal in complex disordered systems.

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Citation Format(s)

Damping-driven time reversal for waves. / Hidalgo-Caballero, Samuel; Sreenivas, Surabhi Kottigegollahalli; Bacot, Vincent et al.
In: Physical Review Letters, Vol. 138, No. 8, 087201, 24.02.2023.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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