Adhesion capabilities of various skin architectures found in nature can generate remarkable physical interactions with their engaged surfaces. Among them, octopus suckers have unique hierarchical structures for reversible adhesion in dry and wet conditions. Here, highly adaptable, biocompatible, and repeatable adhesive patches with unfoldable, 3D microtips in micropillars inspired by the rim and infundibulum of octopus suction cup are presented. The bioinspired synthetic adhesives are fabricated by controlling the meniscus of a liquid precursor in a simple molding process without any hierarchical assemblies or additional surface treatments. Experimental and theoretical studies are investigated upon to increase the effective contact area between unfoldable microtips of devices, and enhance adhesion performances and adaptability on a Si wafer in both dry and underwater conditions (max. 11 N cm⁻² in pull‐off strength) as well as on a moist pigskin (max. 14.6 mJ peeling energy). Moreover, the geometry‐controlled microsuckers exhibit high‐repeatability (over 100 cycles) in a pull‐off direction. The adhesive demonstrates stable attachments on a moist, hairy, and rough skin, without any observable chemical residues.

中文翻译：

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具有高度适应性和生物相容性的类章鱼粘合贴片，具有半月板控制的可折叠 3D 微尖端，适用于水下表面和多毛皮肤

自然界中发现的各种皮肤结构的粘附能力可以与其接合表面产生显着的物理相互作用。其中，章鱼吸盘具有独特的分层结构，可在干燥和潮湿条件下实现可逆粘附。这里展示了具有高度适应性、生物相容性和可重复性的粘合贴片，其灵感来自章鱼吸盘的边缘和漏斗部，其微柱中具有可折叠的 3D 微尖端。仿生合成粘合剂是通过在简单的成型过程中控制液体前体的弯月面而制造的，无需任何分级组装或额外的表面处理。研究了实验和理论研究，以增加器件可折叠微尖端之间的有效接触面积，并增强干燥和水下条件下硅晶圆上的粘附性能和适应性（最大拉脱强度为 11 N cm -2 ）^：以及在潮湿的猪皮上（最大 14.6 mJ 剥离能量）。此外，几何形状控制的微吸盘在拉断方向上表现出高重复性（超过 100 个循环）。该粘合剂在潮湿、多毛和粗糙的皮肤上表现出稳定的附着力，没有任何可观察到的化学残留物。