A wearable multimodal health monitoring bracelet powered by high-power-density flexible thermoelectric generators

作者：Linlong Liang, Xu‐Sheng Liu, Peng Li, Wu Wang, Nianling Kuang, Yuan Zhang, Yimeng Kang, Guang Yao, Zhenlong Huang, Chongjian Zhou, Yuan Lin, Dongfeng Xue, Jiaqing He, Binbin Jiang · 发表于：Device · 年份：2025 · DOI：10.1016/j.device.2025.100748 · 被引用次数：21 · 研究领域：Advanced Thermoelectric Materials and Devices、Advanced Sensor and Energy Harvesting Materials、Thermal Radiation and Cooling Technologies

Flexible thermoelectric generators (FTEGs) can harvest energy from the human body to supply energy to wearable electronic devices. Here, we present a long-term health monitoring bracelet integrated with FTEG, an energy management system (EMS), and a health monitoring system (HMS). Based on the optimized nanostructured compound with a composition of Bi 0.5 Sb 1.469 Ga 0.03 Cu 0.002 Te 3.1575 , the bulk-based FTEG achieved a power density of 88.9 μW cm −2 on the surface of the body at an ambient temperature of 17.6°C. Using a low quiescent current consumption switch, an integrated EMS circuit with a high average efficiency of 60.6% and an ultralow self-startup voltage of 20 mV was designed to boost the unstable voltage.