@article{deng_lu_jing_2019, title={A comparison study between acoustic topological states based on valley Hall and quantum spin Hall effects}, volume={146}, ISSN={["1520-8524"]}, DOI={10.1121/1.5115017}, abstractNote={Over the past few years, the rapid development in the fields of condensed matter physics, electronic, and photonic systems have inspired the design and experimental demonstration of various acoustic topological insulators (TIs). Among these, the topologically protected one-way propagation is a phenomenon that is gaining increased attention. Pseudospin states, which is the analogue of the quantum spin Hall effect from electronic systems, has been proven to enable topological edge states in acoustics. Similarly, the valley Hall (VH) effect is also observed in acoustic systems and provides a pair of valley vortex states with opposite chirality. These valley vortex states can similarly form topologically protected edge states and, in turn, realize robust one-way propagation. However, the differences in the physics behind these acoustic systems give rise to distinct features such as different angle selections and immunization levels to various types of defects. This article conducts a comparison study between topological states in valley Hall phononic crystals and TIs that reveals the differences and similarities in several aspects. Both of them have topologically protected edge states and thus the robust one-way propagation. For the maximum transmission incident angle and defect immunization, however, VH topological waveguides and TI waveguides show different characteristics.}, number={1}, journal={JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA}, author={Deng, Yuanchen and Lu, Minghui and Jing, Yun}, year={2019}, month={Jul}, pages={721–728} }
 @article{wu_oudich_cao_jiang_zhang_ke_yang_deng_cheng_cui_et al._2019, title={Routing Acoustic Waves via a Metamaterial with Extreme Anisotropy}, volume={12}, ISSN={["2331-7019"]}, DOI={10.1103/PhysRevApplied.12.044011}, abstractNote={Routing acoustic waves without backscattering losses is presently of great interest. Unlike both conventional approaches using defects in sonic crystals and emerging approaches based on topological edge states, this study proposes a radically different theoretical framework that utilizes extremely anisotropic media to engineer backscattering-immune waveguides. The exact condition for one-way wave propagation along zigzag paths is derived. The proposal is experimentally validated using spoof surface acoustic waves, and the results could have implications for on-chip wave manipulation, as well as noise control.}, number={4}, journal={PHYSICAL REVIEW APPLIED}, author={Wu, Liting and Oudich, Mourad and Cao, Wenkang and Jiang, Haolin and Zhang, Cheng and Ke, Junchen and Yang, Jin and Deng, Yuanchen and Cheng, Qiang and Cui, Tiejun and et al.}, year={2019}, month={Oct} }
 @article{deng_ge_tian_lu_jing_2017, title={Observation of zone folding induced acoustic topological insulators and the role of spin-mixing defects}, volume={96}, ISSN={["2469-9969"]}, DOI={10.1103/physrevb.96.184305}, abstractNote={This letter investigates a flow-free, pseudospin-based acoustic topological insulator. Zone folding, a strategy originated from photonic crystal, is used to form double Dirac cones in phononic crystal. The lattice symmetry of the phononic crystal is broken by tuning the size of the center "atom" of the unit cell in order to open the nontrivial topological gap. Robust sound one-way propagation is demonstrated both numerically and experimentally. This study provides a flexible approach for realizing acoustic topological insulators, which are promising for applications such as noise control and waveguide design.}, number={18}, journal={PHYSICAL REVIEW B}, author={Deng, Yuanchen and Ge, Hao and Tian, Yuan and Lu, Minghui and Jing, Yun}, year={2017}, month={Nov} }