This project proposes using microfluidic devices to store and release solar energy at the molecular level. To achieve this, we plan to synthesize molecules capable of changing shape when exposed to light, thereby storing chemical energy, which they can then release as heat. Such systems already exist but have limitations because they require catalysts, which complicates their reuse.

To circumvent this problem, we propose using a pair of charged molecules: a light-sensitive organic molecule (azobenzene) and an inorganic molecule (polyoxometalate) sensitive to an electrical signal. Together, they could enable the control of energy storage and release through light or electrical stimuli, without the need for an external catalyst.

The next goal is to integrate these molecules into a microcircuit where different zones handle “charging” (energy storage via light) and “discharging” (controlled heat release). The aim is to create a system capable of operating cyclically in an aqueous environment, which is essential for potential applications. A project that paves the way for sustainable technologies to efficiently convert and store solar energy.

Microalgae are biosources of high-value molecular building blocks, which can be extracted upon cavitation of the cellular wall and membrane.

Currently used extraction techniques still have a high risk of leading to cell death, preventing from the renewability of the production. In this project, we propose to use molecular metallic oxides as trojan horses to induce self-healable chemo-cavitation of the cellular envelope and trigger the release of lipids.

Moreover, we will integrate these molecules in microfluidic chips to perform simultaneous chemical and mechanical cavitation, to improving the release of the contents, while preserving the cell viability.