Elastic Topological Metamaterial

Scatter-free boundary transport

Induces spin-orbit coupling via chiral interlayer coupling, achieving helical edge states at the boundary of a single topological phase, unlike prior elastic topological materials relying on domain walls.

Wu, Ying · Lu, Jiuyang · Huang, Xueqin · Yang, Yating · Luo, Li · Yang, Linyun · Li, Feng · Deng, Weiyin Ying · Liu, Zhengyou

National Science Review 2023

Specifications

frequency range approximately

{'zh': '', 'en': '-19'} kHz

Advantages

3D metal-printed bilayer metamaterial

Helical edge states with vortex features demonstrated on the boundary

Heterostructure exhibits tunable edge transport