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A Superhydrophobic Smart Coating for Flexible and Wearable Sensing Electronics
Advanced Materials ( IF 27.4 ) Pub Date : 2017-09-22 , DOI: 10.1002/adma.201702517 Lianhui Li 1 , Yuanyuan Bai 1 , Lili Li 1 , Shuqi Wang 1 , Ting Zhang 1
Advanced Materials ( IF 27.4 ) Pub Date : 2017-09-22 , DOI: 10.1002/adma.201702517 Lianhui Li 1 , Yuanyuan Bai 1 , Lili Li 1 , Shuqi Wang 1 , Ting Zhang 1
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Superhydrophobic surfaces have shown versatile applications in waterproofing, self‐cleaning, drag reduction, selective absorption, etc. The most convenient and universally applicable approach to forming superhydrophobic surfaces is by coating; however, currently, superhydrophobic, smart coatings with flexibility and multiple functions for wearable sensing electronics are not yet reported. Here, a highly flexible multifunctional smart coating is fabricated by spray‐coating multiwalled carbon nanotubes dispersed in a thermoplastic elastomer solution, followed by treatment with ethanol. The coatings not only endow various substrate materials with superhydrophobic surfaces, but can also respond to stretching, bending, and torsion—a property useful for flexible sensor applications. The coatings show superior sensitivity (gauge factor of 5.4–80), high resolution (1° of bending), a fast response time (<8 ms), a stable response over 5000 stretching–relaxing cycles, and wide sensing ranges (stretching: over 76%, bending: 0°–140°, torsion: 0–350 rad m−1). Moreover, multifunctional coatings with thicknesses of only 1 µm can be directly applied to clothing for full‐range and real‐time detection of human motions, which also show extreme repellency to water, acid, and alkali, which helps the sensors to work under wet and corrosive conditions.
中文翻译：
用于柔性和可穿戴电子设备的超疏水智能涂层
超疏水表面在防水，自清洁，减阻，选择性吸收等方面已显示出广泛的应用。但是，目前尚无可穿戴传感电子设备具有柔性和多种功能的超疏水，智能涂层。在这里，通过喷涂分散在热塑性弹性体溶液中的多壁碳纳米管，然后用乙醇处理，可以制造出高度柔性的多功能智能涂料。涂层不仅使各种基材具有超疏水的表面，而且还可以响应拉伸，弯曲和扭转，这对于灵活的传感器应用非常有用。涂层显示出卓越的灵敏度（5.4–80的规格系数），-1）。此外，厚度仅为1 µm的多功能涂层可以直接应用于服装，以对人体运动进行全范围和实时检测，并具有极强的防水，防酸和防碱性能，有助于传感器在潮湿环境下工作。和腐蚀性条件。
更新日期：2017-09-22
中文翻译：
用于柔性和可穿戴电子设备的超疏水智能涂层
超疏水表面在防水，自清洁，减阻，选择性吸收等方面已显示出广泛的应用。但是，目前尚无可穿戴传感电子设备具有柔性和多种功能的超疏水，智能涂层。在这里，通过喷涂分散在热塑性弹性体溶液中的多壁碳纳米管，然后用乙醇处理，可以制造出高度柔性的多功能智能涂料。涂层不仅使各种基材具有超疏水的表面，而且还可以响应拉伸，弯曲和扭转，这对于灵活的传感器应用非常有用。涂层显示出卓越的灵敏度（5.4–80的规格系数），-1）。此外，厚度仅为1 µm的多功能涂层可以直接应用于服装，以对人体运动进行全范围和实时检测，并具有极强的防水，防酸和防碱性能，有助于传感器在潮湿环境下工作。和腐蚀性条件。
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