137 citations · 568 across the 10 of their papers we have counts for
10 papers
Acoustic Higher-Order Topological Insulators Protected by Multipole Chiral Numbers
Yuzeng Li, Qicheng Zhang, Chunyin Qiu
Recently, the higher-order topological phases from the chiral AIII symmetry classes are characterized by a Z topological invariant known as the multipole chiral numbers, which indi…
Observation of Acoustic Non-Hermitian Bloch Braids and Associated Topological Phase Transitions
Qicheng Zhang, Yitong Li, Huanfa Sun +5
Topological features embedded in ancient braiding and knotting arts endow significant impacts on our daily life and even cutting-edge science. Recently, fast growing efforts are in…
A Universal Mirror-stacking Approach for Constructing Topological Bound States in the Continuum
Luohong Liu, Tianzi Li, Qicheng Zhang +2
Bound states in the continuum (BICs) are counter-intuitive localized states with eigenvalues embedded in the continuum of extended states. Recently, nontrivial band topology is exp…
Tracking valley topology with synthetic Weyl paths
Xiying Fan, Tianzhi Xia, Huahui Qiu +2
Inspired by the newly emergent valleytronics, great interest has been attracted to the topological valley transport in classical metacrystals. The presence of nontrivial domain-wal…
Observation of Gigahertz Topological Valley Hall Effect in Nanoelectromechanical Phononic Crystals
Qicheng Zhang, Daehun Lee, Lu Zheng +8
Topological phononics offers numerous opportunities in manipulating elastic waves that can propagate in solids without being backscattered. Due to the lack of nanoscale imaging too…
Minimal non-abelian nodal braiding in ideal metamaterials
Huahui Qiu, Qicheng Zhang, Tingzhi Liu +3
Exploring new topological phases and phenomena has become a vital topic in condensed matter physics and material sciences. It is generally believed that a pair of band nodes with o…
Observation of Moiré Flat Bands in Sonic Crystals
Tingzhi Liu, Xingjian Zhang, Qicheng Zhang +3
Recently, artificial moire superlattices of classical waves have aroused tremendous interest, inspired by the newly emergent twistronics that focuses on the peculiar electronic pro…
Realization of Surface-Obstructed Topological Insulators
Juan Du, Tianzi Li, Xiying Fan +2
Recently, higher-order topological insulators have been attracting extensive interest. Unlike the conventional topological insulators that demand bulk gap closings at transition po…
Acoustic Möbius insulators from projective symmetry
Tianzi Li, Juan Du, Qicheng Zhang +4
Symmetry plays a critical role in classifying phases of matter. This is exemplified by how crystalline symmetries enrich the topological classification of materials and enable unco…
Controlled Growth of Large-Area Bilayer Tungsten Diselenides with Lateral P-N Junctions
Srinivas V. Mandyam, Meng Qiang Zhao, Paul Masih Das +6
Bilayer two-dimensional (2D) van der Waals (vdW) materials are attracting increasing attention due to their predicted high quality electronic and optical properties. Here we demons…