Dynamic cloaking of a diamond-shaped hole in elastic plate

Kun Tang; Eitam Luz; David Amram; Luna Kadysz; Sébastien Guenneau; Patrick Sebbah

doi:10.1063/5.0123575

Dynamic cloaking of a diamond-shaped hole in elastic plate

Kun Tang, Eitam Luz, David Amram, Luna Kadysz, Sébastien Guenneau, Patrick Sebbah

Department of Physics - at Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Invisibility cloaks for flexural waves have mostly been examined in a continuous-wave regime, while invisibility is likely to deteriorate for short pulses. Here, we propose the practical realization of a unidirectional invisibility cloak for flexural waves based on an area-preserving coordinate transformation. Time-resolved experiments reveal how the invisibility cloak deviates a pulsed plane wave from its initial trajectory and how the initial wavefront perfectly recombines behind the cloak, leaving the diamond-shaped hole invisible, notwithstanding the appearance of a forerunner. Three-dimensional full-elasticity simulations support our experimental observations.

Original language	English
Article number	011701
Number of pages	7
Journal	Applied Physics Letters
Volume	122
Issue number	1
DOIs	https://doi.org/10.1063/5.0123575
State	Published - 2 Jan 2023

Bibliographical note

Publisher Copyright:
© 2023 Crown.

Funding

The authors thank Dr. Leonid Wolfson for preparing the experimental setup. This research was supported by the Israel Science Foundation (Grant Nos. 1871/15, 2074/15, and 2630/20), the United States-Israel Binational Science Foundation NSF/BSF (Grant Nos. 2015694 and 2021811), and the Youth Foundation Project of Zhejiang Lab (Grant No. 2020MC0AA07). P.S. is thankful to the CNRS support under grant PICS-ALAMO.

Funders	Funder number
Youth Foundation Project of Zhejiang Lab	2020MC0AA07
United States-Israel Binational Science Foundation	2015694, 2021811
Israel Science Foundation	2074/15, 1871/15, 2630/20
Centre National de la Recherche Scientifique

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Dynamic cloaking of a diamond-shaped hole in elastic plate

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