Underwater Focusing of Sound by Umklapp Diffraction

@article{Chaplain2021UnderwaterFO,
  title={Underwater Focusing of Sound by Umklapp Diffraction},
  author={Gregory J. Chaplain and Richard V. Craster and N. Cole and Alastair P. Hibbins and Timothy A. Starkey},
  journal={Physical Review Applied},
  year={2021}
}
Gregory J. Chaplain, Richard V. Craster, Nick Cole, Alastair P. Hibbins and Timothy A. Starkey 1 Department of Mathematics, Imperial College London, London SW7 2AZ, UK 2 Centre for Metamaterials Research and Innovation, University of Exeter, Exeter EX4 4QL, United Kingdom 3 Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, UK 4 UMI 2004 Abraham de Moivre-CNRS, Imperial College London, London SW7 2AZ, UK 

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