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

Bar-Ilan University

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

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

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/5.0123575

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title = "Dynamic cloaking of a diamond-shaped hole in elastic plate",

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.",

author = "Kun Tang and Eitam Luz and David Amram and Luna Kadysz and S{\'e}bastien Guenneau and Patrick Sebbah",

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AU - Luz, Eitam

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AU - Kadysz, Luna

AU - Guenneau, Sébastien

AU - Sebbah, Patrick

PY - 2023/1/2

Y1 - 2023/1/2

N2 - 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.

AB - 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.

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JO - Applied Physics Letters

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Dynamic cloaking of a diamond-shaped hole in elastic plate

Abstract

All Science Journal Classification (ASJC) codes

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