Laser-Induced Graphene Skin-Like Triboelectric Sensor for Heart Rate Monitoring

The constant monitoring of cardiovascular health is crucial for lowering mortality rates and managing the economic strain of heart disease, a global health concern. Wearable devices offer a promising solution for long-term, uninterrupted cardiovascular monitoring. While current commercial options are rigid and uncomfortable skin-interfaced triboelectric sensors (SITS) hold promise due to their low-cost and vast array of materials and techniques used in their design. Utilizing laser-induced graphene as an electrode and engineering interfacial design through self-assembly nano-scale coating, a SITS that mimics human skin's mechanical properties was produced. Biocompatible, breathable, self-adhesive, and self-healing, this device enhances user comfort and compliance. This novel triboelectric sensor seamlessly tracks cardiovascular data, offering a low-cost, long-lasting, and skin-friendly alternative to the rigid and inflexible commercial monitoring devices currently available.