Bandgaps Creation with High Acoustic Losses in Gradient-Based Sonic Crystals
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DOI: 10.1007/s40857-021-00242-5
Abstract: A design of the sonic crystal (SC), called the gradient-based sonic crystal (GBSC), that uses the gradient of properties of the SC array is proposed as an improvement over the traditional design of SCs. The… read more here.
Keywords: based sonic; gradient based; bandgaps creation; creation high ... See more keywords
Analysis of scattering by finite sonic crystals in free field with infinite elements and normal modes
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DOI: 10.1016/j.jsv.2020.115291
Abstract: Abstract Acoustic exterior problems are in this paper solved numerically using the Astley-Leis infinite element method (IFEM). Normal modes can be determined thanks to the frequency independence of the system matrices. Convergence properties of the… read more here.
Keywords: acoustics; free field; finite sonic; sonic crystals ... See more keywords
Valley-locked waveguide transport in acoustic heterostructures
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DOI: 10.1038/s41467-020-16843-z
Abstract: Valley pseudospin, labeling the pair of energy extrema in momentum space, has been attracting attention because of its potential as a new degree of freedom in manipulating electrons or classical waves. Recently, topological valley edge… read more here.
Keywords: waveguide transport; valley; transport; sonic crystals ... See more keywords
Acoustic valley states and acoustic valley transport in sonic crystals
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DOI: 10.1121/1.4987864
Abstract: We report the discovery of acoustic valley states in sonic crystals and the observation of the valley transport in the domain walls. The concept of valley pseudospin, labeling quantum states of energy extrema in momentum… read more here.
Keywords: acoustic valley; valley states; valley transport; sonic crystals ... See more keywords