3 papers
physics.optics2026
Direction-Selective Wave Freezing and Amplification at a Hyperbolic Time Interface
Zhao Wang, Ai Gang, Xinghong Zhu +3
Hyperbolic media are well known for converting high k-components that are evanescent in conventional dielectrics into propagating bulk waves through their open equifrequency contou…
physics.app-ph2025
Temporal Effective Medium for Programmable Acoustic Metamaterials with Multiple Resonances
Xinghong Zhu, Hong-Wei Wu, Jensen Li
We extend effective medium theory (EMT) to time-modulated, frequency-dispersive acoustic metamaterials with multiple resonances. While previous studies focused on non-dispersive or…
physics.app-ph2023
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…