Repurposing compact discs to develop an innovative soft biosensing system

Electronic waste is a global issue due to the short lifespan of electronics. In our study, we repurposed compact discs into soft biosensors using sustainable fabrication methods. A craft-based cutter was used to create stretchable electronics from the recycled metal extracted from the discs. The harvested thin gold film was transformed into a soft biosensing system capable of measuring biopotentials, resistivity, temperature, metabolites, and moisture. Additionally, we demonstrate the creation of a high-quality porous active surface for reliable sensing. Importantly, this sustainable approach does not necessitate costly infrastructure or advanced skills.