The octopus is able to adhere to slippery, fouled and irregular surfaces in the marine intertidal environment, because of its periodic infundibulum-shaped suckers on the arms. Here, we report a scalable self-assembly technique for fabricating adhesion materials that mimic octopus-sucker functionality. By utilizing spin-coated two-dimensional colloidal crystals as templates, non-close-packed nanosucker arrays are patterned on silicone substrates. The resulting nanosuckers can be deformed to exhibit great adhesive capacities on both micro-rough and flat surfaces in dry and wet environments. This indicates a possible biomimetic solution to the problem of wound care. References [1] P. Jiang, M. J. McFarland, J. Am. Chem. Soc., 2005, 127, 3710. [2] Y. C. Chen, Z. S. Huang, H. Yang, ACS Appl. Mater. Interfaces, 2015, 7, 25495.