GREAT-4PA: Self-powered and fully biodegradable electronic system for measuring Imatge Funding agency European Commission Reference H2020-MSCA-IF-2019-893995 Period ds., 16/01/2021 - 12:00 - dg., 15/01/2023 - 12:00 P.I. at IMB-CNM Esquivel, Juan Pablo / Desmaele, Denis