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The tribovoltaic effect is the direct‐current (DC) output that results from sliding a p‐type semiconductor on top of an n‐type semiconductor, and it is caused by the electron–hole pairs generated However, the rigid structure of traditional semiconductor limits its potential application in wearable fields. Here, p–type and n–type fabric with semiconductor properties are prepared by doping small organic molecules of cetyltrimethylammonium bromide and sodium dodecylbenzene sulfonate on the carbon atoms of single–wall carbon nanotubes (SWCNTs), and three all‐fabric direct‐current triboelectric nanogenerators based on the tribovoltaic effect (AFDC‐TENG) are developed , which exhibit high flexibility, satisfactory comfort, and stable DC output. In addition, the effects of structural parameters and environmental factors on the electrical output of AFDC‐TENG are systematically discussed. The output voltage, current, and power density of p‐type AFDC‐TENG can reach 0.2 V, 0.29 µA, and 45.5 mV m−2 at a maximum speed of 0.2 m s−1 and a sliding frequency of 1 Hz, respectively. This work proposes a simple and scalable design form for all‐fabric DC power supply devices, which has potential applications in the future micro/nano energy or self‐powered flexible sensors. [ABSTRACT FROM AUTHOR]

Electromagnetic radiation, as one of the public hazards that injures human health and information safety, shall be shielded from the ambient environment. Here, by the virtue of polypyrrole polymerized polyamide yarns and silicone rubber, a yarn‐based electromagnetic shielding‐triboelectric nanogenerator (EMS‐TENG) equipped with sensing ability is presented, which not only generates electricity from harvesting body motion energy but also serves as EMS to prevent electromagnetic interference. With the aid of knitting method, the developed EMS‐TENG fabric exhibits the EMS effectiveness of 32.49 dB in 8.2–12.5 GHz and achieves a maximum instantaneous peak power density of 142.27 µW m−1. Furthermore, a real‐time human‐interactive system is developed by adopting the Internet of Things technology and EMS‐TENG sensor. Based on the above, a simulated intelligent calculator with multiplication and division function is proposed, which can successfully translate electronic signals to digital numbers. With energy harvesting and self‐powered sensing abilities, the EMS‐TENG can convert mechanical energy into electrical signals from human movements. Looking forward, the EMS‐TENG spurs an innovative technique toward a self‐powered human‐interactive sensing and functional protective textile for next‐generation intelligent wearable applications. [ABSTRACT FROM AUTHOR]

Wearable, flexible, and even stretchable tactile sensors, such as various types of electronic skin, have attracted extensive attention, which can adapt to complex and irregular surfaces, maximize the matching of wearable devices, and conformally apply onto human organs. However, it is a great challenge to simultaneously achieve breathability, permeability, and comfortability for their development. Herein, mitigating the problem by miniaturizing and integrating the sensors is tried. Highly flexible and stretchable coaxial structure fiber‐shaped triboelectric nanogenerators (F‐TENGs) with a diameter of 0.63 mm are created by orderly depositing conductive material of silver nanowires/carbon nanotubes and encapsulated polydimethylsiloxane onto the stretchable spandex fiber. As a self‐powered multifunctional sensor, the resulting composite fiber can convert mechanical stimuli into electrical signals without affecting the normal human body. Moreover, the F‐TENGs can be easily integrated into traditional textiles to form tactile sensor arrays. Through the tactile sensor arrays, the real‐time tactile trajectory and pressure distribution can be precisely mapped. This work may provide a new method to fabricate fiber‐based pressure sensors with high sensitivity and stretchability, which have great application prospects in personal healthcare monitoring and human–machine interactions. [ABSTRACT FROM AUTHOR]