SoilNutri: A Passive Metasurface-based, Low-cost System for Soil Moisture and Nitrogen Monitoring
Published:
Conference: UbiComp 2026
SoilNutri introduces a battery-free encapsulated metasurface capsule for scalable underground sensing of soil moisture and nitrogen. A sandwich-structured PETG–PTFE design ensures robust soil coupling and long-term deployment, while physics-grounded spectral learning enables accurate multi-parameter estimation across diverse field conditions.
Highlights
- Encapsulated passive metasurface capsule
- Sandwich-structured PETG + PTFE design
- Battery-free passive sensing for long-term deployment
- Simultaneous soil moisture and nitrogen monitoring
- Reusable and <$1 scalable sensor