Fig. 1: Theory, modeling, and results of WGMs band splitting induced by rotation.
From: A novel gyroscope based on the slow surface acoustic wave in a phononic metamaterial
a Basic structure for a unit cell of PM array. The mode shapes and their coupling vibration system are shown in the dashed frame, respectively. b Band structure of the hollow-pillar-based PM under rotation and non-rotation. The structural parameters are summarized in Table 1. The gray zone represents the sound cone, and the blue and orange dotted lines refer to the bands under rotation or not, respectively. WGMs bands are enlarged in the red frame. c Simulation model for calculating transmission characteristics. The displacement field are captured near but out of WGMs. d Transmission characteristics of the PM with 11-cell length under increasing rotation, calculated from the model in (c). e Trends of the frequency shifts under growing rotation. The blue solid line, red solid line and the black dashed line denote the results of 11-cell PM, 50-cell PM and theoretical prediction, respectively
