Study of Super Hydrophilic Surface Modification and Visualization of Evaporation

Abstract

Abstract. The aim of this study is to use nanoscale bilayers assembly tacking surface modification on stainless steel plate, to make the surface modification of the Super hydrophilic surface, and then as the visualization of droplet evaporation and evaporation efficiency of the study, the paper made nano-film in the form of overlapping surface modification, change its hydrophilicity, and then take water as the working fluid for evaporation behavior visualization observation. The change parameters include droplet size (1µl-5µl), droplet extension area and liquid film thickness, with the change of evaporation time, further analysis of evaporation enhancement efficiency. The results showed that the best modified 18-layer Contact angle was 4 ⁰ surface of the super hydrophilic water. The results of evaporation test showed that the best evaporation efficiency of plate was about 550% the liquid droplet was more than 3µl, the effect was stable at 550%, less than 3µl also had more than 450% promotion.