This study presents a sustainable approach to upcycling compact discs (CDs) into flexible and stretchable biosensors. The researchers demonstrate that CDs can be transformed into cost-effective, biocompatible biosensors capable of various biopotential measurements, including electrocardiograms (ECGs) and electromyograms (EMGs). The process uses an affordable craft-based mechanical cutter for patterning, eliminating the need for expensive microfabrication techniques. The resulting devices exhibit good stretchability and biocompatibility, opening avenues for sustainable e-waste management and low-cost bioelectronics.

Matthew S. Brown, Louis Somma, Melissa Mendoza, Yeonsik Noh, Gretchen J. Mahler, Ahyeon Koh