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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…
Homogeneous Dislocation-Induced Rainbow Concentrating for Elastic Waves
Zi-Dong Zhang, Shi-Li Yang, Shi-Ling Yan +3
Defects play a crucial role in the physical properties of crystals, whether for classical or quantum systems. For example, in photonic/phononic crystals, defects can serve as preci…
Observation of higher-order non-Hermitian skin effect
Xiujuan Zhang, Yuan Tian, Jian-Hua Jiang +2
Hermitian theories play a major role in understanding the physics of most phenomena. It has been found only in the past decade that non-Hermiticity enables unprecedented effects su…
Guiding Robust Valley-dependent Edge States by Surface Acoustic Waves
Zhen Wang, Fu-Kang Liu, Si-Yuan Yu +4
Recently, the concept of valley pseudospin, labeling quantum states of energy extrema in momentum space, has attracted enormous attention because of its potential as a new type of…