There are various potential applications of biomimetic adhesive solutions including climbing robotic systems, mobile sensor platforms, and biomedical applications such as patches for external use. Achieving resistance to both normal and tangential loads, however, is a critical issue that still needs to be addressed. Some animals have developed exceptional attachment mechanisms based on combined fibrillar elements of different shapes and functions. Experimental investigation of combined biomimetic adhesive micro-textures on tribological performances such as adhesion, friction, and peeling resistance is needed to apply this idea to the design of an artificial texture having similar “biomimetic” properties. In the present study, we demonstrate that combinations of different shapes of biomimetic adhesive micro-textures show increased efficiency under different contact environments and enable long-term adhesive solutions. Our work sheds light on combinations of different element shapes inspired by nature and their adhesive efficiency as a function of the ratio of each biomimetic element, as well as their spatial repartition.

仿生粘合剂解决方案有多种潜在应用，包括攀爬机器人系统、移动传感器平台和生物医学应用，例如外用贴片。然而，实现对法向和切向载荷的抵抗力是一个仍然需要解决的关键问题。一些动物已经发展出基于不同形状和功能的组合纤维状元素的特殊附着机制。需要对结合的仿生粘合剂微纹理对摩擦学性能（如粘合、摩擦和剥离阻力）进行实验研究，以将这一想法应用于具有类似“仿生”特性的人造纹理的设计。在目前的研究中，我们证明，不同形状的仿生粘合剂微纹理的组合在不同的接触环境下显示出更高的效率，并能够实现长期的粘合剂解决方案。我们的工作阐明了受自然启发的不同元素形状的组合，以及它们的粘合效率作为每个仿生元素的比例的函数，以及它们的空间重新分配。