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Communication Dans Un Congrès Année : 2023

Exceptional points and skin modes in non-Hermitian elastic phononic beams

Résumé

Exceptional points and skin effect are two hallmarks of non-Hermitian systems combining gain and loss. We demonstrate these phenomena for flexural waves in phononic beams based on applied forces with feedback control. The non-Hermiticity is realized either by means of applying piezoelectric patches on top of the beam or by using a periodic beam made of piezoelectric materials operating as sensor and actuator. We highlight the applications of exceptional points for enhanced sensitivity and of skin modes for energy harvesting.
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Dates et versions

hal-04278712 , version 1 (10-11-2023)

Identifiants

  • HAL Id : hal-04278712 , version 1

Citer

Yabin Jin, Runcheng Cai, Wenxin Zhong, Timon Rabczuk, Xiaoying Zhuang, et al.. Exceptional points and skin modes in non-Hermitian elastic phononic beams. 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META23, Jul 2023, Paris, France. ⟨hal-04278712⟩
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