Space-time reflection control
A reflective acoustic metasurface driven by a piezoelectric array and FPGA enables spatiotemporal encoding of underwater acoustic waves, achieving Doppler-like chirp modulation and deterministic frequency and momentum shifts.
Yang, Yunhan · Jia, Han · Lu, Jiuyang · Yang, Yuzhen · Liu, Tuo · Yang, Jun · Liu, Zhengyou
Advanced Science 2025
Experimentally achieved Doppler-like chirp modulation of waterborne acoustic waves
Achieved space-time modulation with deterministic frequency and momentum shifts
Demonstrated single-channel direction-of-arrival estimation application