| Abstract Scope |
We live in a digital age with interconnected smart solutions. In biomedicine, devices like the FDA-cleared ECG app for Apple Watch monitor physiological status. There's potential for broader use, particularly in the Internet of Medical Things (IoMTs) to monitor and prevent medical device failures. IoMTs need a reliable power source, as current batteries are short-lived, heavy, and bulky, unsuitable for implantable devices. Triboelectric nanogenerators (TENGs) convert body kinetic energy into electricity but often suffer from toxicity or thrombogenicity issues. This study proposes FDA-approved biocompatible materials, poly(2-hydroxyethyl methacrylate) (pHEMA) and expanded polytetrafluoroethylene (e-PTFE). pHEMA generates 100.0 V, 4.7 μA, and 0.68 W/mē, with enhanced performance when combined with 0.2% (v/v) graphene oxide (GO), producing 194.5 V, 5.3 μA, and 1.28 W/mē. ePTFE-based TENGs in a novel configuration charged a 100 nF capacitor up to 23.6 V. All tested TENGs were cytocompatible, highlighting their potential for energy harvesting in medical applications. |