4 papers · 1 filter
Topological Rainbow Trapping for Spatial-frequency Demultiplexing of Underwater Acoustic Signals
Cheng Lin, Yangkai Liu, Tuo Liu +3
Efficient separation and localization of multifrequency acoustic waves are essential for underwater target recognition and acoustic energy harvesting. The underwater implementation…
Elastic Trapped States at Dislocation Defects in Scaled Coupling and Hofstadter Models
Yangkai Liu, Cheng Lin, Yuan Liu +4
Elastic topological dislocations provide a pathway for trapping elastic wave energy at internal defects, rather than being confined solely to external boundaries or corners, which…
Chiral Landau levels induced by two in-plane pseudomagnetic fields in underwater acoustic metamaterials
Jiao Shen, Zhiyong Chang, Xinzong Wang +6
The chiral zeroth Landau levels (LLs) constitute topologically protected bulk states that enable robust control of acoustic wave propagation. Given the central role of underwater a…
Multi-Channel Amplitude-Phase Asymmetric-Encrypted Janus Acoustic Meta-Holograms
Haohan Zeng, Zhenyu He, Tianxiang Zhang +12
Encrypted optical and acoustic meta-holograms only focus on the encrypted hologram in a single channel, viz. modulating spatial amplitude to project a holographic image. In this re…