Scattering cancellation technique for acoustic spinning objects

Mohamed Farhat, Sebastien Guenneau, Andrea Alù, and Ying Wu
Phys. Rev. B 101, 174111 – Published 20 May 2020

Abstract

The scattering cancellation technique (SCT) has proved to be an effective way to render static objects invisible to electromagnetic and acoustic waves. However, rotating cylindrical or spherical objects possess additional peculiar scattering features that cannot be canceled by regular SCT-based cloaks. Here, a generalized SCT theory to cloak spinning objects, and hide them from static observers, based on rotating shells with different angular velocity is discussed. This concept is analytically and numerically demonstrated in the case of cylinders, showing that the generalized SCT operates efficiently in making rotating objects appear static to an external observer. Our proposal extends the realm of SCT and brings it one step closer to its practical realization that involves moving objects.

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  • Received 20 March 2020
  • Revised 26 April 2020
  • Accepted 29 April 2020
  • Corrected 29 July 2020

DOI:https://doi.org/10.1103/PhysRevB.101.174111

©2020 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsGeneral Physics

Corrections

29 July 2020

Correction: Equation (2) contained a minor typographical error and has been fixed.

Authors & Affiliations

Mohamed Farhat1,*, Sebastien Guenneau2, Andrea Alù3, and Ying Wu1,†

  • 1Computer, Electrical, and Mathematical Science and Engineering (CEMSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
  • 2UMI 2004 Abraham de Moivre-CNRS, Imperial College London, London SW7 2AZ, United Kingdom
  • 3Photonics Initiative, Advanced Science Research Center, City University of New York, New York, New York 10031, USA

  • *mohamed.farhat@kaust.edu.sa
  • ying.wu@kaust.edu.sa

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Issue

Vol. 101, Iss. 17 — 1 May 2020

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