Drawing Dispersion Curves: Band Structure Customization via Nonlocal Phononic Crystals
Drawing Dispersion Curves: Band Structure Customization via Nonlocal Phononic Crystals
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DOI：
10.1103/physrevlett.131.176101
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发表时间：
2023-10-27
影响因子：
8.6
通讯作者：
Wang，Pai
中科院分区：
文献类型：
--
作者：
Kazemi，Arash;Deshmukh，Kshiteej J.;Wang，Pai
色散关系支配着波的行为，而剪裁它们是波操纵中的一个巨大挑战。我们演示了声子色散的逆设计使用一维弹簧质量链上的非局部相互作用。对于单波段和双波段的情况下，我们可以得到任何有效的色散曲线与分析精度。我们进一步采用我们的方法来设计声子晶体与多个普通（roton或maxon）和高阶（起伏）的临界点，并研究其波包动力学。
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.