Topologically protected edge states of elastic waves in phononic crystal plates
نویسندگان
چکیده
منابع مشابه
Topologically protected elastic waves in phononic metamaterials
Surface waves in topological states of quantum matter exhibit unique protection from backscattering induced by disorders, making them ideal carriers for both classical and quantum information. Topological matters for electrons and photons are largely limited by the range of bulk properties, and the associated performance trade-offs. In contrast, phononic metamaterials provide access to a much w...
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Xiaoqian Dang,1 J. D. Burton,1,* Alan Kalitsov,2 Julian P. Velev,1,2 and Evgeny Y. Tsymbal1,† 1Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska 68588-0299, USA 2Department of Physics and Astronomy and Institute for Functional Nanomaterials, University of Puerto Rico, San Juan, Puerto Rico 00931, USA (Received 5 Septem...
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The rainbow trapping effect has been demonstrated in electromagnetic and acoustic waves. In this study, rainbow trapping of ultrasonic guided waves is achieved in chirped phononic crystal plates that spatially modulate the dispersion, group velocity, and stopband. The rainbow trapping is related to the progressively slowing group velocity, and the extremely low group velocity near the lower bou...
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ژورنال
عنوان ژورنال: Acta Physica Sinica
سال: 2020
ISSN: 1000-3290
DOI: 10.7498/aps.69.20200542