Currently, “wearable thermal-electric harvester” is a loose term for technology that embraces rigid thermoelectric leg incorporated flexible substrates. In reality, they are not exclusively flexible, much less totally soft and stretchable. Likewise, conventional substrate-dependent thermogalvanic cells lack the highly sought after mechanical adaptability, and hinder the full exploitation of the inherent merit of their fluidic matrices. The existence of the substrate causes poor air permeability and worse still, leads to low heat transfer efficiency. Here, a soft and stretchable thermogalvanic fabric directly woven out of p/n alternating hydrogel-based fibers is proposed. In addition to improved wearing comfort, the compliant mechanical properties of the thermogalvanic fabric possess desired adaptability to irregular and continuously deformed skin, so as to realize conformal and efficient body heat harvesting. The scalable and modular, processable soft gel serves as the groundwork to the realization of prototypical arbitrary fabric design and potentially a new battery-free bodily heat harvesting wearable.

中文翻译：

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全柔软可拉伸热电凝胶织物用于抗变形体热收集可穿戴

目前，“可穿戴热电采集器”是包含刚性热电腿和柔性基板的技术的宽松术语。实际上，它们不仅具有柔韧性，更不用说完全柔软和可拉伸。同样，传统的依赖于基板的热原电池缺乏备受追捧的机械适应性，并阻碍了对其流体基质固有优点的充分利用。基材的存在导致透气性差，更糟的是，导致传热效率低。在这里，提出了一种直接由 p/n 交替水凝胶基纤维编织而成的柔软且可拉伸的热电偶织物。除了提高穿着舒适度外，热电偶织物的柔顺机械性能对不规则和连续变形的皮肤具有理想的适应性，从而实现适形、高效的体热收集。可扩展、模块化、可加工的软凝胶是实现原型任意织物设计和潜在的新型无电池体热收集可穿戴设备的基础。