87 citations · 186 across the 5 of their papers we have counts for
5 papers
Nonreciprocal field transformation with active acoustic metasurfaces
X. Wen, C. Cho, X. Zhu +2
Field transformation, as an extension of the transformation optics, provides a unique means for nonreciprocal wave manipulation, while the experimental realization remains a signif…
Acoustic amplifying diode using non-reciprocal Willis coupling
Xinhua Wen, Heung Kit Yip, Choonlae Cho +2
We propose a concept called acoustic amplifying diode in combining both signal isolation and amplification in a single device. The signal is exponentially amplified in one directio…
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…
Acoustic omni meta-atom for top-down, decoupled access to all octants of a wave parameter space
Sukmo Koo, Choonlae Cho, Jun-ho Jeong +1
The common behavior of a wave is determined by wave parameters of its medium, which are generally associated with the characteristic oscillations of its corresponding elementary pa…