3 papers
physics.app-ph2026
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…
physics.app-ph2026
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…
physics.app-ph2026
Experimental Realization of Type-II Quadrupole Topological Insulator
Yuan Liu, Yangkai Liu, Cheng Lin +4
The discovery of quadrupole topological insulators (QTIs) has spurred extensive research into higher-order topological phases. Recently proposed type-II QTIs exhibit unconventional…