Abstract
Acoustic topological insulators are at the frontier of acoustic metamatetials research. The analogue of the quantum valley-Hall effect (QVHE) in sound waves has led to acoustic valley Hall topological insulators (VHTIs). Here, we construct a new acoustic VHTI with C3v- symmetric hexagonal cells. The sound propagation along the interface is demonstrated via simulations. By introducing defects along the interface, such as cavity or bendings, we observe the robust transports to these defects in acoustic VHTIs. In addition, we construct several waveguides to quantitatively analyze the suppressed backscattering. The results illustrate that the new designed acoustic VHTIs in this paper possess better backscattering suppression in sound propagation, although the penetration is lower than the previously designed acoustic VTHIs.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IOP Conference Series: Earth and Environmental Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
