Gecko’s foot hairs exhibit significant frictional anisotropy that enables a strong foot grip in a specific direction and an easy detachment in the opposite direction. In this study, we fabricate adhesive devices with frictional anisotropy mimicking gecko’s foot hair based on oblique micro-beam arrays. The devices adhesion force is strongly anisotropic along the beam tilting direction and depends on the stress distribution at the contact area which, in turn, is affected by the geometry of the beam tips. This dependence is investigated by fabricating and testing micro beam arrays with various tip shapes.

中文翻译：

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不对称剥离下壁虎启发的粘合装置中尖端形状影响的实验研究

壁虎的脚毛表现出明显的摩擦各向异性，可以使脚在特定方向上牢固抓紧，并在相反方向上易于分离。在这项研究中，我们基于倾斜的微束阵列制造具有摩擦各向异性，模仿壁虎脚毛的粘合装置。装置的附着力沿光束倾斜方向强烈各向异性，并取决于接触区域的应力分布，而接触区域的应力分布又受光束尖端的几何形状影响。通过制造和测试具有各种尖端形状的微束阵列来研究这种依赖性。