Time reversal of elastic waves in soft solids.

  title={Time reversal of elastic waves in soft solids.},
  author={Stefan Catheline and Nicolas Benech and Javier Brum and Carlos Negreira},
  journal={Physical review letters},
  volume={100 6},
When a scalar far-field wave is time reversed, it starts to converge toward its initial point source location, then collapses and finally diverges. Without evanescent waves, the symmetric focus spot is limited by the Rayleigh criterion. We present an experimental observation of a time-reversal elastic wave in a soft solid cavity using the transient elastography technique. It is observed that the time-reversed far field wave collapses and gives birth to near fieldlike effects. Elastodynamic… CONTINUE READING

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