463 citations · 632 across the 6 of their papers we have counts for
6 papers
Acoustic toroidal vortices with programmable links and knots
Shuai Liu, Xiang-Yuan Xu, Hao Ge +3
Toroidal vortices are three-dimensional torus-shaped wave structures characterized by phase circulation around a closed vortex line. Their toroidal geometry provides a natural foun…
Twistsonics: engineering acoustic topological textures in moire sound lattices
Wen-Yu Wang, Shuai Liu, Xiang-Yuan Xu +4
Moire superlattices formed by twisting periodic systems provide a powerful platform for emergent topological phenomena, but their use for programming real-space topology in acousti…
Generation of spatiotemporal acoustic vortices with arbitrarily oriented orbital angular momentum
Shuai Liu, Hao Ge, Xiang-Yuan Xu +4
Despite extensive exploration of acoustic vortices carrying orbital angular momentum (OAM), the generation of acoustic vortices with OAM orientations beyond the conventional longit…
Direct measurement of acoustic spectral density and fractional topological charge
Hao Ge, Zi-Wei Long, Xiang-Yuan Xu +5
Local density-of-states (LDOS) is a fundamental spectral property that plays a central role in various physical phenomena such as wave-matter interactions. Here, we report on the d…
Dimensional hierarchy of higher-order topology in three-dimensional sonic crystals
Xiujuan Zhang, Bi-Ye Xie, Hong-Fei Wang +5
Topological phases of matter have been extensively studied for their intriguing bulk and edge properties. Recently, higher-order topological insulators with boundary states that ar…
Topologically protected acoustic helical edge states and interface states in strongly coupled metamaterial ring lattices
Xue-Feng Zhu, Yu-Gui Peng, Xiang-Yuan Yu +4
Time reversal (T) invariant topological insulator is widely recognized as one of the fundamental discoveries in condensed matter physics, for which the most fascinating hallmark is…