4 papers
Wave Scattering at temporal interfaces with spatial-translation-symmetry mismatch
Cong Chen, Kaijun Yi, Guoliang Huang +1
Temporal interfaces enable wave manipulation through broken time-translation symmetry, but conventional formulations generally assume that spatial-translation symmetry is preserved…
Classification of rotational zero modes in 2D micropolar solids
Dingxin Sun, Yi Chen, Gengkai Hu
Zero modes, which are deformations that cost zero energy, underlie many exotic behaviors in elastic metamaterials. While classical linear Cauchy elasticity explains many of these m…
Resonance-induced frequency splitting and evanescent modes at temporal interfaces in elastic metamaterials
Cong Chen, Kaijun Yi, Gengkai Hu
Temporal interfaces, defined by abrupt changes in material properties, break temporal translational symmetry and enable wave phenomena fundamentally different from those at spatial…
Unimode material based low-frequency underwater acoustic isolation
Yu Wei, Binghao Zhao, Fen Du +2
Extremal materials are a specific class of Cauchy materials whose elasticity tensor has one or more zero eigenvalues. Each zero eigenvalue corresponds to a soft mode requiring zero…