Abstract
This review focuses on the mechanism of adjusting the thermal environment surrounding the human body via textiles. Recently highlighted technologies for thermal management are based on the photothermal conversion principle and Joule heating for wearable electronics. Recent innovations in this technology are described, with a focus on reports in the last three years and are categorized into three subjects: (1) thermal management technologies of a passive type using light irradiation of the outside environment (photothermal heating), (2) those of an active type employing external electrical circuits (Joule heating), and (3) biomimetic structures. Fibers and textiles from the design of fibers and textiles perspective are also discussed with suggestions for future directions to maximize thermal storage and to minimize heat loss.
Highlights
Textiles that have specific functions added to their inherent properties have been some of the most interesting themes for academic and industrial studies and development [1,2,3]
Functional textiles originate from attempts to improve the properties of textiles based on synthetic fibers and to make their properties similar to textiles based on natural fibers
Novel technologies based on the photothermal conversion principle and Joule heating for wearable electronics have been highlighted as promising technologies for future functional fibers and textiles
Summary
Textiles that have specific functions added to their inherent properties have been some of the most interesting themes for academic and industrial studies and development [1,2,3]. Novel technologies based on the photothermal conversion principle and Joule heating for wearable electronics have been highlighted as promising technologies for future functional fibers and textiles They should be an important element for personal thermal management by raising the human body’s temperature when applied to normal clothes. This review is organized as follows: Section 2 provides an overview of the methodologies based on photothermal heating, focusing on materials that can efficiently absorb solar energy under sunlight irradiation and emit the energy as heat These technologies should be useful for the fabrication of clothes for harsh and cold environments where clothes are naturally exposed to sunlight. The incorporation of electrical conductors with resistance into fibers is a direct method for controlling the thermal properties of textiles based on electrically resistive heating These technologies are some of the most widely studied, in combination with wearable displays, sensors, and therapeutic devices.
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