Muscle Fibers Inspired High‐Performance Piezoelectric Textiles for Wearable Physiological Monitoring

Abstract

The next‐generation wearable biosensors with highly biocompatible, stretchable, and robust features are expected to enable the change of the current reactive and disease‐centric healthcare system to a personalized model with a focus on disease prevention and health promotion. Herein, a muscle‐fiber‐inspired nonwoven piezoelectric textile with tunable mechanical properties for wearable physiological monitoring is developed. To mimic the muscle fibers, polydopamine (PDA) is dispersed into the electrospun barium titanate/polyvinylidene fluoride (BTO/PVDF) nanofibers to enhance the interfacial‐adhesion, mechanical strength, and piezoelectric properties. Such improvements are both experimentally observed via mechanical characterization and theoretically verified by the phase‐field simulation. Taking the PDA@BTO/PVDF nanofibers as the building blocks, a nonwoven light‐weight piezoelectric textile is fabricated, which hold an outstanding sensitivity (3.95 V N−1) and long‐term stability (<3% decline after 7,400 cycles). The piezoelectric textile demonstrates multiple potential applications, including pulse wave measurement, human motion monitoring, and active voice recognition. By creatively mimicking the muscle fibers, this work paves a cost‐effective way to develop high‐performance and self‐powered wearable bioelectronics for personalized healthcare.

Progress on Self-Powered Wearable and Implantable Systems Driven by Nanogenerators

“…chest [78] knee [80,108]; foot [32,48,77] heart and pericardium [87,101,105] pacemaker lead [97,116] elbow [26,56] chest [29,50]; duodenum [120]; stomach [103] knee [26,30,56] neck [18,19,29,50,52] tumor cells [94] lung [86] waist [21,25,27,45,55,74,81] elbow [49,72,76] the surface of bone [99] heart [83,84,86,106,110,114] eye [23,28] wrist [18,29,50] the subdermal dorsal region [93] blood vessel…”

“…Applications human-machine interface [20,55] motion monitoring [19,29,37,50] anti-bacteria [99] in vivo health monitoring [83,97,119] motion monitoring [21,27,33,56,74] health monitoring [18,49,52] anti-tumor therapy [94] in vivo therapying [29,103,104,114] health monitoring [27,45,78] wound healing [79] in vivo health monitoring [101,105,120] regeneration of tissues [85] eye motion monitoring [23,28] power supply [18,32,72,77] electrical stimulator [98] implanted sensor [112] voice and gesture recognition [20,44,65] power supply [87,88,92,93] power supply [84,106,…”

“…It shows good ability in energy harvesting and motion sensing. Yuanjie Sun et al proposed a muscle-fiber-inspired nonwoven piezoelectric textile with tunable mechanical properties to mimic the muscle fiber, as shown in Figure 7e [52]. It achieves high sensitivity in the monitoring of various physiological signals.…”

“…(e) A muscle-fiber-inspired nonwoven piezoelectric textile for health monitoring. Reproduced with permission from Ref [52]…”

3D Simulation-Based Acoustic Wave Resonator Analysis and Validation Using Novel Finite Element Method Software

“…These devices promise to improve communication platforms, sensing devices, and many other systems. AWRs are currently used in a variety of applications as Radio Frequency (RF) filters [1], gravimetric and pressure sensors [2], oscillators [3], and wearable biosensors [4][5][6], among others.…”