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  • Wireless battery-free body ...
    Lin, Rongzhou; Kim, Han-Joon; Achavananthadith, Sippanat; Kurt, Selman A; Tan, Shawn C C; Yao, Haicheng; Tee, Benjamin C K; Lee, Jason K W; Ho, John S

    Nature communications, 01/2020, Letnik: 11, Številka: 1
    Journal Article

    Networks of sensors placed on the skin can provide continuous measurement of human physiological signals for applications in clinical diagnostics, athletics and human-machine interfaces. Wireless and battery-free sensors are particularly desirable for reliable long-term monitoring, but current approaches for achieving this mode of operation rely on near-field technologies that require close proximity (at most a few centimetres) between each sensor and a wireless readout device. Here, we report near-field-enabled clothing capable of establishing wireless power and data connectivity between multiple distant points around the body to create a network of battery-free sensors interconnected by proximity to functional textile patterns. Using computer-controlled embroidery of conductive threads, we integrate clothing with near-field-responsive patterns that are completely fabric-based and free of fragile silicon components. We demonstrate the utility of the networked system for real-time, multi-node measurement of spinal posture as well as continuous sensing of temperature and gait during exercise.