Highly Comfortable and Durable Single-Layer Knitted Textile-Based Triboelectric Nanogenerator for Smart Wearable Applications

Abstract

Amidst the global quest for sustainable energy solutions, there have been endeavors to revolutionize energy-harvesting methods, opening pathways to innovative approaches that tap into the inherent potential of natural sources. The integrated textilebased triboelectric nanogenerator (T-TENG) offers a viable solution to harness human mechanical energy through the clothing. T-TENG has shown several advantages, including flexibility, lightweight, and conformability, for wearable applications. Herein, knitting engineering is utilized for the precise positioning of triboelectric (nylon and polypropylene (PP)) and electrode materials (copper-blended yarn) within the fabric structure for the fabrication of T-TENG. A combination of rib, single jersey, and derivatives of rib knitting techniques was employed to create different tribo structures, namely, 1R1C, pocket, plating, and ridge. The ridge and plated structures showed the highest performance with a peak power density of 110 and 45 μW/m 2 , respectively. Both structures demonstrated excellent air and water vapor permeability and a stable output up to 12,000 cycles of contact separation with excellent long-term durability. The study strongly affirms that the use of commodity textile materials and modifying the structural features of the knitted fabric have significant potential to produce renewable power sources for wearable electronic gadgets.

Comfortable, Anisotropic-Elastic, and Multilayered Fibrous Bandages with Enhanced Directional Tensile Performance

“…They have been widely used in rehabilitation training, wound healing, , and health care . Recently, with the latest developments in training theory, the ideal bandage is considered to be a porous soft material with directional tensile performance along the length direction that provides fixation pressure to an injured body part without hindering the normal movements of other body parts, i.e., offers comfortable and anisotropic-elastic function . As such, the development of such bandages has emerged as a prominent subject in the field of wearable medical devices , and soft robotics .…”

Electrothermal Characterization of Series- and Parallel-Based Heating Textiles with Insulation Layers

“…The recent growth spurt in wearable electronic gadgets and the internet of things (IoT) has attracted significant innovation in the field of electronic textiles (e-textiles), marking the convergence of technology and textiles into pioneering applications. , This integration facilitates the creation of wearable electronics, smart textiles, and interactive fabrics, thereby driving the escalating demand for e-textiles. Wearable e-textile products, including EMI shielding materials, triboelectric nanogenerators, temperature sensors, pressure sensors antennas, and electrical heating devices, have garnered considerable interest within the smart textile arena, offering personalized thermal comfort and health monitoring capabilities and opening new pathways for advanced fabric-based technologies. ,− Over the past few years, the field of smart wearable heating textiles has garnered significant attention.…”