Acta Physica Sinica, Volume. 68, Issue 22, 227805-1(2019)
Fig. 1. (a) Cross section of the phononic crystal lattice in
Fig. 2. (a) Three-dimensional view of the compound cell; (b) the folding mechanism from
Fig. 3. Band structure of the compound cell for the case of (a) topologically trivial
Fig. 4. (a) Schematic diagram and band structure of the ribbon-shaped supercell (in
Fig. 5. Absolute pressure field of (a) the topologically trivial phonon crystals (Structure Ⅰ), (b) linear type topologically protected surface wave waveguide (Structure Ⅱ), (c) bending type topologically protected surface wave waveguide (Structure Ⅲ) at
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Yi-He Wang, Zhi-Wang Zhang, Ying Cheng, Xiao-Jun Liu.
Received: Sep. 9, 2019
Accepted: --
Published Online: Sep. 17, 2020
The Author Email: Liu Xiao-Jun (liuxiaojun@nju.edu.cn)