Microscale Phloem Sap Extraction Sensor Device For Measuring Biological Information In Plant Branches

In this study, a microscale phloem sap extraction sensor device based on MEMS technology is proposed to artificially extract phloem sap and monitor biological information in plant branches. The device consists of electrical resistance sensors to distinguish the positions of vascular bundles (xylem/phloem) and hollow- structured cantilevers with reservoirs for fluid extraction. A prototype of the proposed sensor device was fabricated. Furthermore, the performance of the position- distinction sensor was evaluated, and the feasibility of the fluid- extraction structure was validated.