104 citations · 802 across the 51 of their papers we have counts for
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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…
Machine learning identifies scale-free properties in disordered materials
Sunkyu Yu, Xianji Piao, Namkyoo Park
The vast amount of design freedom in disordered systems expands the parameter space for signal processing, allowing for unique signal flows that are distinguished from those in reg…
Topological protection in nonlinear optical dynamics with parity-time symmetry
Sunkyu Yu, Xianji Piao, Namkyoo Park
Topological phases exhibit properties that are conserved for continuous deformations, as demonstrated in topological protections in condensed-matter physics and electromagnetic wav…
Topological hyperbolic lattices
Sunkyu Yu, Xianji Piao, Namkyoo Park
Non-Euclidean geometry, discovered by negating Euclid's parallel postulate, has been of considerable interest in mathematics and related fields for the description of geographical…
Weak value picture on quantum observables: gauge-invariant vector potentials
Sunkyu Yu, Xianji Piao, Namkyoo Park
The conservation of physical quantities under coordinate transformations, known as gauge invariance, has been the foundation of theoretical frameworks in both quantum and classical…