Fig. 3: High throughput SAW splitter based on the ETVS.
From: Extended topological valley-locked surface acoustic waves
(bottom) Schematic of a three-ports SAW splitter sample consists of the (blue shaded) VA, (red shaded) VB, and (unshaded) SM. In the experiment, planar SAWs are injected into the sample from Port#1 and captured from the other three ports. (upper) Calculated SAW out-of-plane displacement distributions and experimentally imaged SAW amplitude around all four ports. All SAWs are highly localized in routes that hold the same valley pseudospin, i.e., the SAWs are output the sample only via Ports #2 and #3.
