Abstract
Lotus leaves are well known for its high water repellency. Lotus leaves have microstructure composed of microrods on a surface and when a water drop sit on a leaf, microrods keep air layer between surface and drop. So, drop contacts by extremely low area and it can be seen as if it floats on a surface. The microrods are not uniformed; does not have same diameter, height. In this paper, focusing on this characteristic and consider of its effect on water repellency by observation and simulations.
