Ultra-Thin Metasurface-Based Absorber of Low-Frequency Sound With Bandwidth Optimization by Yi-jun Guan, Yi-jun Guan, Yi-jun Guan, Yong Ge, Hong-xiang Sun, Hong-xiang Sun, Shou-qi Yuan, Yun Lai, Xiao-jun Liu, Xiao-jun Liu

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Low-Frequency Dual-Band Sound Absorption by Ultrathin Planar Wall Embedded With Multiple-Cavity Resonators by Yu-wei Xu, Yi-jun Guan, Yi-jun Guan, Yi-jun Guan, Jia-li Yin, Yong Ge, Hong-xiang Sun, Hong-xiang Sun, Shou-qi Yuan, Xiao-jun Liu, Xiao-jun Liu

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Low-Frequency, Open, Sound-Insulation Barrier by Two Oppositely Oriented Helmholtz Resonators by Yi-Jun Guan, Yong Ge, Hong-Xiang Sun, Shou-Qi Yuan, Xiao-Jun Liu

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Low-Frequency Low-Reflection Bidirectional Sound Insulation Tunnel with Ultrathin Lossy Metasurfaces by Yi-Jun Guan, Yu-Wei Xu, Yong Ge, Hong-Xiang Sun, Shou-Qi Yuan, Xiao-Jun Liu

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Broadband low-frequency sound absorption in open tunnels with deep sub-wavelength Mie resonators by Jianping Xia, Ye-Yang Sun, Yi-Jun Guan, Yi-Jun Guan, Yin Wang, Yu-Jing Lu, Hui-Gang Hu, Yong Ge, Yong Ge, Hong-Xiang Sun, Hong-Xiang Sun, Shou-Qi Yuan, Yun Lai, Xiao-Jun Liu, Xiao-Jun Liu

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An ultra-low-frequency sound absorber and its application in noise reduction in ducts by Yi-jun Guan, Yong Ge, Cheng-hao Wu, Qiao-rui Si, Yun Lai, Shou-qi Yuan, Hong-xiang Sun

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Observation of an acoustic octupole topological insulator by Haoran Xue, Yong Ge, Hong-Xiang Sun, Qiang Wang, Ding Jia, Yi-Jun Guan, Shou-Qi Yuan, Yidong Chong, Baile Zhang

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Vortex states in an acoustic Weyl crystal with a topological lattice defect by Qiang Wang, Yong Ge, Hong-xiang Sun, Haoran Xue, Ding Jia, Yi-jun Guan, Shou-qi Yuan, Baile Zhang, Y. D. Chong

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Observation of vortex-string chiral modes in metamaterials by Jingwen Ma, Ding Jia, Li Zhang, Yi-jun Guan, Yong Ge, Hong-xiang Sun, Shou-qi Yuan, Hongsheng Chen, Yihao Yang, Xiang Zhang

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Three-dimensional flat Landau levels in an inhomogeneous acoustic crystal by Zheyu Cheng, Yi-Jun Guan, Haoran Xue, Yong Ge, Ding Jia, Yang Long, Shou-Qi Yuan, Hong-Xiang Sun, Yidong Chong, Baile Zhang

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Broadband Bidirectional and Multi-Channel Unidirectional Acoustic Insulation by Mode-Conversion Phased Units by Jia-he Chen, Jiao Qian, Yi-jun Guan, Yong Ge, Shou-qi Yuan, Hong-xiang Sun, Hong-xiang Sun, Hong-xiang Sun, Yun Lai, Xiao-jun Liu, Xiao-jun Liu

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Acoustic non-Hermitian skin effect from twisted winding topology by Li Zhang, Yihao Yang, Yong Ge, Yi-Jun Guan, Qiaolu Chen, Qinghui Yan, Fujia Chen, Rui Xi, Yuanzhen Li, Ding Jia, Shou-Qi Yuan, Hong-Xiang Sun, Hongsheng Chen, Baile Zhang

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