Self-Powered Wireless System for Monitoring Sweat Electrolytes in Personalized Healthcare Wearables
The demand for non-invasive health monitoring with wearables poses challenges in developing sustainable, self-powered systems, as current energy harvesters face issues like complex fabrication, low robustness, and insufficient power density for continuous biosensing. In this study, a wearable self-powered biosensing platform combining a electromagnetic-triboelectric hybrid generator (ETHG) with an advanced electrochemical sweat-ion-sensing patch is proposed. A Halbach magnet array within the electromagnetic generator (EMG) enhances magnetic flux concentration and power output, while advanced Nylon@polyallylamine and polyvinylidene fluoride@Co3O4 nanofiber films significantly boost the triboelectric generator's performance. Mechanical and theoretical modeling reveals an optimized power output of 328 mW for the EMG and 0.65 mW for the triboelectric component at 6 Hz. This hybrid approach not only enhances the power density but also simplifies the fabrication process and improves the charging performance and robustness of the system. To address potential drift in solid-contact ion-selective electrodes, nanoporous carbon -modified electrodes increase hydrophobicity, enhancing sensitivity for Na+ (56.1 mV dec−1), K+ (55.2 mV dec−1), and Ca2+ (30.8 mV dec−1), along with excellent performance in pH (69.7 mV dec−1) sensing. Integrating ETHG with a flexible microfluidics-enabled patch enables real-time on-body sweat monitoring, with data wirelessly transmitted via Bluetooth, offering an efficient and robust platform for continuous health monitoring applications.
Similar Publications:
In this study, a breathable and strain-insensitive multi-layered electronic skin (e-skin) capable of real-time detection and distinction of electrocardiogram...
Although metal-organic framework (MOF)-derived nanoporous C (NPC) materials offer several advantages for electrochemical sensor applications, surface functio...
The triboelectric nanogenerator (TENG) is a promising technology for self-powered sensors and vibration-driven energy harvesting...
While state-of-the-art skin-adhering fibrous electrodes have distinct benefits in personal wearable bioelectronics, considerable challenges persist in the pr...
Despite substantial progress in the development of wearable and flexible monitoring systems that conform to the epidermis, most designs focus on either physi...
Polymer nanofibers are widely adopted in energy harvesting and pressure sensing applications owing to the large contact area and inherent compressibility. He...
The contactless triboelectric nanogenerator with the capability of touchless interactions has become extremely fascinating for applications in health care, r...
Surface modification of triboelectric negative layers is an essential factor for boosting the output performance of triboelectric nanogenerators (TENGs). Her...
Hierarchically interactive 3D-porous soft carbon nanofibers (CNFs) have great potential for wearable bioelectronic interfaces, yet 90% of CNFs are derived fr...
Triboelectric nanogenerators (TENGs), which operate in contactless mode and avoid physical contact, are highly attractive for self-powered sensor systems aim...