In daily life, we can easily observe the droplet impact situations, for example, rain falls, spray cooling, inkjet print, etc. We imitated the droplet impact situations as falling the water droplet on to the surfaces. Using the droplet experiments, we can find the fundamental mechanism including contact time, spreading, cassie-wenzel transitions on various surfaces. As a result, many researchers are investigated a droplet impact experiments to show various impact dynamics using various surfaces such as micro-post, grate or different wettability surfaces such as hydrophobic(HPo) and superhydrophobic (SHPo).
MEL develops micro/nano structured surfaces which can reduce the contact time, and also studies various geometric surfaces such as mesh, curved surface.