York University
Food Production in Space: 3D-Printed Capillary Hydroponics with Multi-Ion Organic Electrochemical Transistor Sensing for Detecting Faults and Optimizing Growth — The project aims to improve food production in space by developing a compact, low-power “root-zone lab” that uses engineered capillarity instead of gravity-dependent plumbing for water and nutrient delivery. By leveraging additive manufacturing, all capillary features are integrated into a single efficient part, reducing mass, volume, leaks, and assembly complexity. Real-time monitoring of nutrient balance and root zone stress is achieved through printed organic electrochemical transistor (OECT) based sensors. The project involves bench and clinostat testing of fluidics, staged biology experiments, and comparison with traditional pumped systems to optimize plant outcomes. The main deliverables are a flight-relevant, 3D-printable module with replaceable sensors, offering a reliable solution for space missions and a plug-in, cost-effective monitoring system for terrestrial applications. Additionally, the initiative will provide multidisciplinary training in materials engineering and plan