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Spin-orbit interactions of transverse sound
Shubo Wang, Guanqing Zhang, Xulong Wang +3
Spin-orbit interactions (SOIs) endow light with intriguing properties and applications such as photonic spin-Hall effects and spin-dependent vortex generations. However, it is coun…
Realizing spatiotemporal effective media for acoustic metamaterials
Xinhua Wen, Xinghong Zhu, Hong Wei Wu +1
The effective medium representation is fundamental in providing a performance-to-design approach for many devices based on metamaterials. While there are recent works in extending…
Acoustic Willis metamaterials beyond the passivity bound
Choonlae Cho, Xinhua Wen, Namkyoo Park +1
Acoustic bianisotropy, also known as the Willis parameter, expands the field of acoustics by providing nonconventional couplings between momentum and strain in constitutive relatio…
Digitally virtualized atoms for acoustic metamaterials
Choonlae Cho, Xinhua Wen, Namkyoo Park +1
By designing tailor-made resonance modes with structured atoms, metamaterials allow us to obtain constitutive parameters outside their limited range from natural or composite mater…
Unidirectional zero sonic reflection in passive symmetric Willis media
Aurélien Merkel, Vicent Romero-García, Jean-Philippe Groby +2
In an effective medium description of acoustic metamaterials, the Willis coupling plays the same role as the bianisotropy in electromagnetism. Willis media can be described by a co…