The project aims to develop a self-powered, self-reshaping ultrathin “autarkic skin” for wireless motes (miniaturized IoT devices). These skins integrate energy harvesting, storage, and electronics into a single system. The innovation lies in combining photo-chargeable micro-supercapacitors with 3D self-reshaping materials, enabling devices to transform from flat 2D films into compact “Swiss-roll” 3D structures while maintaining functionality. This approach significantly reduces weight and material usage, achieving a high functional-to-total weight ratio (~0.95) far superior to conventional systems.
The project addresses limitations of current IoT devices, such as bulky design, dependence on batteries, and environmentally harmful production. By using printing technologies (notably High Precision Capillary Printing, HPCAP), LEAF enables high-resolution fabrication of micro-electrodes and components, improving performance and scalability.
Additional goals include advancing sustainable materials (e.g. bio-based polymers, green solvents) and developing printed environmental sensors for applications such as agriculture. These innovations aim to reduce environmental impact while enabling new use cases.
In terms of impact, LEAF targets breakthroughs in miniaturized, energy-autonomous electronics, supporting IoT expansion, reducing reliance on batteries, and promoting sustainability through recyclable and low-impact materials.