Drawing Dispersion Curves: Band Structure Customization via Nonlocal Phononic Crystals

Drawing Dispersion Curves: Band Structure Customization via Nonlocal Phononic Crystals

Dispersion relations govern wave behaviors, and tailoring them is a grand challenge in wave manipulation. We demonstrate the inverse design of phononic dispersion using nonlocal interactions on one-dimensional spring-mass chains. For both single-band and double-band cases, we can achieve any valid d...

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Bibliographic Details
Published in:Physical review letters Vol. 131; no. 17; p. 176101
Main Authors: Kazemi, Arash, Deshmukh, Kshiteej J., Chen, Fei, Liu, Yunya, Deng, Bolei, Fu, Henry Chien, Wang, Pai
Format: Journal Article
Language:English
Published: 27-10-2023
Online Access:Get full text
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Summary:Dispersion relations govern wave behaviors, and tailoring them is a grand challenge in wave manipulation. We demonstrate the inverse design of phononic dispersion using nonlocal 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 or maxon) and higher-order (undulation) critical points and investigate their wave packet dynamics.
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ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.131.176101