具有可切换润湿性的可穿戴超疏水弹性体皮肤,Advanced Functional Materials

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具有可切换润湿性的可穿戴超疏水弹性体皮肤
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2018-04-06 , DOI: 10.1002/adfm.201800625
Jian-Nan Wang ₁ , Yu-Qing Liu ₁ , Yong-Lai Zhang ₁ , Jing Feng ₁ , Huan Wang _{1,

2} , Yan-Hao Yu ₁ , Hong-Bo Sun _{1,

2}

Affiliation

具有可调节润湿性的柔性智能表面有望用于新兴的可穿戴用途。然而，目前很少报道具有动态润湿行为的可穿戴超疏水表面。此处报道了皮肤状的超疏水弹性体表面，其荷叶和玫瑰花瓣状态可切换。直接激光写入技术用于在弹性体上一步一步，可编程，大规模制造整体式和分层微纳米结构，从而具有很强的防水性。可以通过简单的拉伸以快速和可逆的方式精细调节表面形貌，从而提供了通过简单的身体运动来控制表面润湿性的可行性。切换润湿状态的能力使表面可以并行捕获和释放多个液滴。此外，活性表面可以施加到手指的关节上，并且在手指运动下可以作为液滴操纵器，而无需能量供应或外部设备。在这项工作中，将润湿特性的动态调整集成到类似于皮肤的可穿戴表面的设计中，从而在可穿戴液滴操纵器，便携式执行器，自适应粘合控制，拒液皮肤和智能服装等多功能应用中显示出巨大潜力。

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Wearable Superhydrophobic Elastomer Skin with Switchable Wettability

Flexible smart surfaces with tunable wettability are promising for emerging wearable uses. However, currently, wearable superhydrophobic surfaces with dynamic wetting behaviors are rarely reported. Here, a skin‐like superhydrophobic elastomer surface with switchable lotus leaf and rose petal states is reported. Direct laser writing technique is employed for one‐step, programmable, large‐scale fabrication of monolithic and hierarchical micro‐nanostructures on elastomer, leading to strong water repellence. The surface topography can be finely regulated in a rapid and reversible manner by simple stretching, providing the feasibility of controlling the surface wettability by simple body motions. The ability to switch wetting states enables the surface to capture and release multiple droplets in parallel. Furthermore, the active surface can be applied to the joints of fingers and operate as a droplet manipulator under finger motions without requiring energy supply or external appliance. In this work, dynamic tuning of wetting properties is integrated into the design of skin‐like wearable surfaces, revealing great potential in versatile applications such as wearable droplet manipulator, portable actuator, adaptive adhesion control, liquid repellent skin, and smart clothing.

更新日期：2018-04-06

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