Fig. 5: Laser modulation using the droplet-based mechanical transducers.
From: Droplet-based mechanical transducers modulated by the symmetry of wettability patterns
a The experimental setup of the laser modulation test includes a commercial laser serving as the laser source, an upper plate serving as the mirror reflector, a droplet-based mechanical transducer serving as the modulator, and a background panel. Here the top surface of the upper plate is sputtered with a high-reflective platinum layer to enhance its reflectivity. b The steering of one laser beam driven by the vibrating upper plate. c–h The theoretical and actual trajectories of laser spots modulated by the transducer systems with (c) circle array, (d) ellipse array, (e) gourd array, (f) M-gourd array, (g) M-ellipse array, and (h) R-gourd array, respectively. i, j The simultaneous steering of (i) two and (j) three laser beams by the droplet-based mechanical transducer.
