MetaTap: Passive Metasurface Sensing for Drinking Water Safety
Published:
MetaTap is a passive metasurface-based sensing system for high-resolution detection of drinking water contaminants. It leverages a novel Complementary Asymmetric Split Square (CASS) structure, inspired by resonance splitting, together with amplitude-phase spectral features to detect ppb-level contaminants using a commercial UWB radar.
Highlights
- Resonance splitting enabled multi-dip information encoding
- Passive metasurface sensing for drinking water monitoring
- Detection down to ppb-level concentration
- Low-cost metasurface fabrication