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arXiv · 2302.00591

Non-Local Phononic Crystals for Dispersion Customization and Undulation-point Dynamics

Arash Kazemi·Kshiteej J. Deshmukh·Fei Chen·Yunya Liu·Bolei Deng·Henry Chien Fu·Pai Wang
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Abstract

Dispersion relations govern wave behaviors, and tailoring them is a grand challenge in wave manipulation. We demonstrate inverse design of phononic dispersion using non-local interactions on one-dimensional spring-mass chains. For both single-band and double-band cases, we can achieve any valid dispersion curves with analytical precision. We further employ our method to design phononic crystals with multiple ordinary (roton/maxon) and higher-order (undulation) critical points and investigate their wave packet dynamics.

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Arash Kazemi, Kshiteej J. Deshmukh, Fei Chen, Yunya Liu, Bolei Deng, Henry Chien Fu, Pai Wang. 2023-02-01. Non-Local Phononic Crystals for Dispersion Customization and Undulation-point Dynamics. https://doi.org/10.1103/physrevlett.131.176101

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