An integrated flexible multifunctional wearable electronic device for personal health monitoring and thermal management
An integrated flexible multifunctional wearable electronic device for personal health monitoring and thermal management
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用于个人健康监测和热管理的集成柔性多功能可穿戴电子设备
DOI：
10.1016/j.sna.2020.112514
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发表时间：
2021-01-08
影响因子：
4.6
通讯作者：
Gou, Jun
中科院分区：
文献类型：
--
作者：
Yu, He;Yang, Xiaonan;Gou, Jun
近年来，可穿戴压力传感器因其在智能设备和柔性电子领域的潜在应用而引起了极大的关注。除了高效的实时传感性能外，舒适性和轻便性等佩戴体验对于人类健康监护设备或系统也相当重要。有效调节人体辐射加热对于以具有成本效益的方法提高热舒适度具有重要意义。在这里，我们报告了一种利用碳纳米管（CNT）作为压力传感层和红外反射器来制造多功能可穿戴电子设备的新策略。基于面对面结构的器件在0-30 kPa下表现出5.22x10(5) kPa(-1)的超高灵敏度，在30-100 kPa下表现出6.06x10(4) kPa(-1)的超高灵敏度。同时，测量的光谱和时域有限差分（FDTD）模拟结果表明，这种多功能器件具有接近20％的极低红外发射率以及出色的自升温能力。因此，它不仅比商用棉片表现出 6 ℃ 的被动保暖效果，而且还表现出出色的焦耳热效应。这种方法将促进多功能柔性电子产品在个人医疗保健、热调节和轻型防弹衣应用中的发展，以实现有效的节能。 (C) 2020 Elsevier B.V. 保留所有权利。
Recently, wearable pressure sensors have attracted tremendous attention because of their potential applications in intelligent equipment and flexible electronic. Aside from efficient real-time sensing performances, the wearing experience such as comfort and lightweight are also quite important for human health-care monitoring devices or systems. Effectively regulating radiative heating from human body are of interest for improving thermal comfort with a cost-effective approach. Here, we report a new strategy utilizing carbon nanotubes (CNTs) as both pressure sensing layer and infrared reflector for fabricating multifunctional wearable electronic device. The as-fabricated device based on face to face structure shows ultrahigh sensitivity of 5.22x10(5) kPa(-1) at 0-30 kPa, and 6.06x10(4) kPa(-1) at 30-100 kPa, respectively. Meanwhile, both measured spectra and finite-difference time-domain (FDTD) simulation results demonstrate that such multifunctional devices present an extreme low IR emissivity of similar to 20 % as well as outstanding self-warming capability. As a result, it not only shows a passive warming effect of 6 degrees C over the commercial cotton pieces but also exhibits an outstanding Joule heating effect. This approach will promote the development of multifunctional flexible electronic in personal healthcare, thermal regulation and lightweight body armor applications for effective energy savings. (C) 2020 Elsevier B.V. All rights reserved.