Recent progress in self‐powered multifunctional e‐skin for advanced applications

Abstract

Electronic skin (e-skin), new generation of flexible wearable electronic devices, has characteristics including flexibility, thinness, biocompatibility with broad application prospects, and a crucial place in future wearable electronics. With the increasing demand for wearable sensor systems, the realization of multifunctional e-skin with low power consumption or even autonomous energy is urgently needed. The latest progress of multifunctional self-powered e-skin for applications in physiological health, humanmachine interaction (HMI), virtual reality (VR), and artificial intelligence (AI) is presented here. Various energy conversion effects for the driving energy problem of multifunctional e-skin are summarized. An overview of various types of self-powered e-skins, including single-effect e-skins and multifunctional coupling-effects e-skin systems is provided, where the aspects of material preparation, device assembly, and output signal analysis of the self-powered multifunctional e-skin are described. In the end, the existing problems and prospects in this field are also discussed.

High Thermoelectric Performance and Low Lattice Thermal Conductivity in Lattice-Distorted High-Entropy Semiconductors AgMnSn1–xPbxSbTe4

“…In the past two decades, band structure manipulations (band convergence , and resonant levels , ), modulation doping, and energy filtering , have been proposed to regulate the electrical transport properties of thermoelectric materials for high S 2 σ values, while point defects, − dislocations, , grain boundaries, , and nanoprecipitates have been employed to regulate the thermal transport properties of thermoelectric materials for lower κ tot values. In recent years, entropy engineering (i.e., increasing configurational entropy) has gained increasing attention in the thermoelectric community because it not only causes severe lattice distortion to reduce the lattice thermal conductivity but also enhances the symmetry of the crystal structure to enhance the Seebeck coefficient of thermoelectric materials, thus a high figure of merit ZT has been reported in high-entropy thermoelectric materials, such as Pb 0.99– y Sb 0.012 Sn y Se 0.5 Te 0.25 S 0.25 , AgSnSbSe 3– x Te x , (GeTe) 1–2 x (GeSe) x (GeS) x , and AgMnGeSbTe 4 .…”

A Review: Contact Electrification on Special Interfaces

“…The triboelectric nanogenerators (TNGs) have attracted widespread interest due to their important applications in micronano energy, self-powered sensing, blue energy, and high-voltage power supply (Luo and Wang, 2020). Recently, there have been a lot of reports on the TENGs in self-powered sensing (Zhang et al, 2020), flexible wearable pending e-skin (Chen et al, 2022), human-machine interfaces (Sun et al, 2021), pressure sensing (Lei et al, 2021a), and hybrid energy harvesting (Xie et al, 2021a).…”

Enhancing Drug Utilization Efficiency via Dish-Structured Triboelectric Nanogenerator

“…As the output has been ameliorated to a very high level, TENGs are widely applied to establish self-powered nanodevices or nanosystems. For example, TENG’s output changed under different driving forces, making it available to sense and detect these applied forces ( Chen et al, 2022 ); through connecting TENGs together with sensors, UV light intensity, gas concentration, and other environmental information could be detected to realize the application of self-powered detection ( Zheng et al, 2014 ; Su et al, 2018 ; Zhao et al, 2018 ; Zheng et al, 2022 ); using the current generated by TENGs, self-powered anticorrosion was realized ( Wang et al, 2014a ). Furthermore, through the use of display units or wireless transmission technology, the sensing result could be displayed directly or sent out for further processing ( Zheng et al, 2014 ; Cheng et al, 2017 ; Zhang et al, 2022b ).…”