Design of Quick-Dry Surface Using Structured Surface

Abstract

This paper discusses the design of surface microstructures for quick drying. The structures produced in this study were arrays of micropillars with different sizes and pitches fabricated by photolithography. It was found that the sliding angle decreased with an increase in the pitch of the pillars. Hence, droplets could be removed easily. However, the evaporation time increased significantly. To achieve a balance between the evaporation time and the sliding angle, a reticular pattern consisting of pillars and flat areas was designed and tested. The evaporaiotn time became shorter than the fully arrayed surface on this pattern, while the sliding angle could not be made small. The evaporation time became shorter than the fully arrayed surface on this pattern, while the sliding angle could not be made small.

Fabrication of high aspect ratio silicon micro-/nano-pore arrays and surface modification aiming at long lifetime liquid-infused-type self-cleaning function

“…For self-cleaning, fine structures and/or low surface energy material coating have been tried so far. But these surfaces lose the function when they are used in environment having low surface tension liquids (Aruga et al, 2008, Moronuki, 2016a, Tuteja et al, 2007. To overcome this limitation, structured surfaces are infused with a special liquid (a lubricant) to produce an intermediate lubricant layer, and any liquid drops can slide easily on it (Wong et al, 2011).…”