Kirigami-Inspired Structures for Smart Adhesion
Kirigami-Inspired Structures for Smart Adhesion
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DOI：
10.1021/acsami.7b18594
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发表时间：
2018-02-21
影响因子：
9.5
通讯作者：
Bartlett, Michael D.
中科院分区：
文献类型：
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作者：
Hwang, Doh-Gyu;Trent, Katie;Bartlett, Michael D.
弹性的空间控制布局可以提供比均匀系统更强的粘附力。kirigami中的新兴技术，其中设计的材料切割赋予高度可调的刚度和几何形状，提供了一种有趣的方法来创建指定弹性区域的定义良好的布局。在这里，我们表明，kirigami启发的接口结构提供了一种新的机制，空间控制和增强粘附强度，同时提供智能接口的方向特性。我们使用kirigami启发的切割来定义刚性和顺应性区域，其中在临界的材料定义的长度尺度之上，可以调整弯曲刚度和接触宽度，以在空间图案化的粘合剂片材上通过类似于100的因子来增强粘合力能力。这些设计的定向性质也赋予各向异性响应，其中在不同方向上的剥离导致类似于10的各向异性粘附率。实验结果得到了理论预测的支持，其中弯曲刚度和接触宽度kirigami启发的结构和互连控制的粘合能力。这些新的界面结构和设计标准为先进的粘合剂功能提供了多种途径，包括空间控制系统，可穿戴的kirigami启发电子产品和各向异性kirigami启发绷带，这些绷带具有强大的粘合能力，同时保持易于释放。
Spatially controlled layouts of elasticity can provide enhanced adhesion over homogeneous systems. Emerging techniques in kirigami, where designed cuts in materials impart highly tunable stiffness and geometry, offer an intriguing approach to create well-defined layouts of prescribed elastic regions. Here, we show that kirigami-inspired structures at interfaces provide a new mechanism to spatially control and enhance adhesion strength while providing directional characteristics for smart interfaces. We use kirigami-inspired cuts to define stiff and compliant regions, where above a critical, material-defined length scale, bending rigidity and contact width can be tuned to enhance adhesive force capacity by a factor of similar to 100 across a spatially patterned adhesive sheet. The directional nature of these designs also imparts anisotropic responses, where peeling in different directions results in anisotropic adhesion ratios of similar to 10. Experimental results are well-supported by theoretical predictions in which the bending rigidity and contact width kirigami-inspired structures and interconnects control the adhesive capacity. These new interfacial structures and design criteria provide diverse routes for advanced adhesive functionality, including spatially controlled systems, wearable kirigami-inspired electronics, and anisotropic kirigami-inspired bandages that enable strong adhesive capacity while maintaining easy release.