Laser‐Induced, Green and Biocompatible Paper‐Based Devices for Circular Electronics

The growing usage and consumption of electronics-integrated items into the daily routine has raised concerns on disposal proper recycling these components. Here, a fully sustainable green technology for fabrication different electronics fruit-waste derived paper substrate, is reported. process relies carbonization topmost surface cellulose-based substrates, from apple-, kiwi-, grape-based processes, by CO2 laser. By optimizing lasing parameters, electronic devices, such as capacitors, biosensors, electrodes food monitoring well heart respiration activity analysis, are realized. Biocompatibility tests fruit-based cellulose reveal no shortcoming on-skin applications. employment natural plastic-free substrate allows twofold strategies recycling. As first approach, device dissolution achieved at room temperature within 40 days, revealing transient behavior in solution leaving harmful residuals. Alternatively, reintroduced nature, possible support plant seeding growth or even soil amendment. These results demonstrate realization green, low-cost circular electronics, with applications smart agriculture Internet-of-Thing, waste creation zero positive impact ecosystem.