2024/12/03 by Bowei Wu, Teng Wang, Wu, Bowei +5
Engineering · Physics and Astronomy · #Applied Physics (physics.app-ph) #Atomic and Subatomic Physics Research #FOS: Physical sciences #Geophysics and Sensor Technology #Gyrotron and Vacuum Electronics Research
paper · pdf · doi:10.48550/arxiv.2412.02463
openalex publication_date 2024/12/03 · openalex created_date 2024/12/06 · openalex updated_date 2026/07/28
In this work, tunable acoustic energy concentrations are realized based on pseudo-spin locking waveguides and topological rainbow trappings. Firstly, a tunable pseudo-spin locking is proposed, and the broad acoustic energy transport and spin-locked one-way transport are verified. The results show that acoustic wave transports based on pseudo-spin locking waveguides are more robust to structure defects than conventional topological edge-state waveguides. Besides, topological rainbow trappings are realized by adjusting the distribution of liquid in tubes. Based on those, we investigate the coupling of the pseudo-spin locking waveguides and the topological rainbow trappings. The results show that high acoustic energy concentrations can be obtained conveniently by using the coupling energy concentrator based on the pseudo-spin locking waveguides and the topological rainbow trappings. The results present a novel method to concentrate acoustic wave energy, which is vital in the application field of acoustic sensings and microfludics. The according experimental verifications will be presented in the near future.