Combined Effect of the Microstructure and Underlying Surface Curvature on the Performance of Biomimetic Adhesives,Advanced Materials

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Combined Effect of the Microstructure and Underlying Surface Curvature on the Performance of Biomimetic Adhesives
Advanced Materials ( IF 27.4 ) Pub Date : 2017-12-27 , DOI: 10.1002/adma.201704696
Emre Kizilkan ₁ , Stanislav N. Gorb ₁

Affiliation

The importance of the geometry of the micro‐/nanosized attachment elements for adhesive characteristics of gecko‐inspired microstructured surfaces has been comprehensively discussed in recent years. Due to the complex hierarchical structure of these systems, they possess a broad range of adhesion control capabilities by either passive or active adaptability of their underlying structures to the specific substrate and/or behavioral situation. Here, the influence of macroscopic geometry of backing layers hosting biomimetic microstructured surfaces is examined. The flat, convex, and concave macroscopic configurations of the bioinspired microstructured adhesive surfaces are examined on their adhesive performance under varying degrees of curvature and preloads. Microstructured surfaces demonstrated an adhesion range differing by up to a factor of 2 alone through varying backing layer configuration. The results can aid in understanding the influence of curvature geometry on hierarchically structured adhesive systems and the implementation of biomimetic structured surfaces in applications such as robots and grippers optimized for different sized objects.

中文翻译：

微观结构和下表面曲率对仿生胶性能的综合影响

近年来，已经广泛讨论了微米/纳米尺寸附着元件的几何形状对于壁虎启发的微结构表面的粘合特性的重要性。由于这些系统的复杂的分层结构，它们通过其下层结构对特定基材和/或行为情况的被动或主动适应性，具有广泛的粘合控制能力。在这里，检查了承载仿生微结构化表面的衬里层的宏观几何形状的影响。在不同的曲率和预紧力下，对生物启发的微结构化粘合剂表面的平坦，凸起和凹入的宏观构型进行了粘合性能研究。微结构化的表面显示出通过变化的背衬层结构，粘合范围仅相差高达2倍。结果可以帮助理解曲率几何形状对分层结构的粘合剂系统的影响以及仿生结构化表面在诸如针对不同尺寸对象优化的机器人和抓手的应用中的实现。

更新日期：2017-12-27

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