Integrated All-Fiber Electronic Skin toward Self-Powered Sensing Sports Systems

Abstract

The development of wearable electronic skins (E-skins) requires devices with high flexibility, breathability, and antibacterial activity, as in sports sensing technology. Here, we report a flexible, breathable, and antibacterial triboelectric nanogenerator (TENG)-based E-skin for self-powered sensing in volleyball reception statistics and analytics, which is fabricated by sandwiching a silver nanowire (Ag NW) electrode between a thermoplastic polyurethane (TPU) sensing layer and a poly(vinyl alcohol)/chitosan (PVA/CS) substrate. Benefiting from an outstanding breathability of 10.32 kg m −2 day −1 and biocidal properties of CS and Ag NW, the E-skin offers excellent thermal-moisture comfort and a remarkable antibacterial effect on Escherichia coli and Staphylococcus aureus. A pressure sensitivity of 0.3086 V kPa −1 is demonstrated in the sensing range of 6.65−19.21 kPa. Besides, a volleyball reception statistical and analytical system is further developed based on a 2 × 3 E-skin array. According to this work, the integration of wearable electronic devices with self-powered sensors may expand practical applications in sports.

Research on Training Model of Volleyball Based on Flexible Strain Sensing Network for Training

“…A flexible sensor is different from traditional hard metal or semiconductor materials; with stretchability and bendability, it can be attached to the human body or complex surface to monitor the excitation signal of a class of electronic devices, because of its significant application prospects in the human movement monitoring, medical diagnosis, human-computer interaction, environmental monitoring, and other fields; since its introduction in 2009, it has received the attention of many researchers at home and abroad [1]. The wrist joint has a complex structure among human joints and plays a very important role in human upper limb movement.…”

Breathable Electronic Skins for Daily Physiological Signal Monitoring

“…To become more suitable for long-term use in daily life, breathable e-skins have gradually developed from the device level that can only detect physiological signals to the system level. This trend has led to several important changes: (1) The breathable e-skin can detect more kinds of physiological signals by integrating a variety of breathable sensors and electrodes [22,[80][81][82][83][84][85]. (2) The breathable e-skins are becoming more integrated.…”

“…Human health assessment and disease diagnosis are usually not based on a single physiological signal, but on a combination of multiple physiological signals to conclude. Facing the need of monitoring a variety of physiological signals of the human body and the demand of performing other functions, the breathable e-skins are becoming multifunctional [22,75,[80][81][82][83][84]. In this section, taking the typical breathable e-skin systems developed in recent years as examples, we will discuss the multifunctional challenges faced by the breathable e-skin and corresponding solutions, and introduce design ideas and characteristics of multifunctional breathable e-skin systems.…”

“…One is the breathable e-skin electrode for electrophysiological signal monitoring [17][18][19][20], including the electrocardiograph (ECG) e-skin electrode, electro-oculography (EOG) e-skin electrode, electromyography (EMG) e-skin electrode, electroencephalograph (EEG) e-skin electrode, etc. The other is breathable e-skin sensors [21][22][23][24][25], which are used to detect both physical physiological signals (pules, breath sound, blood pressure, body temperature, etc.) and chemical physiological signals (glucose, ethanol, electrolytes, etc.).…”

A Self-Powered Wearable Motion Sensor for Monitoring Volleyball Skill and Building Big Sports Data

“…Recently, self-powered flexible biosensing devices have been used in real-time monitoring various physiological indicators like blood glucose, body temperature, heart rate and pulse in daily life [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ]. These self-powered flexible sensors that possess the ability to work without external power could also be probably used in the domain of sports motion monitoring [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ].…”