Cooler temperatures increase surface tension, and the drop is pulled towards the cooler temperature. Temperature driven water droplet movement only accounts for speeds of around a half meter per second. The Lehigh researchers got their drops to move faster by reducing frictional forces at the liquid-solid interface. They did this by using a hydrophilic surface. When a water droplet comes into contact with the hydrophilic molecules, it is pulled along by capillary action.
Capillary action helps pull like molecules along by forces of adhesion.
The water drop is attracted to the hydrophilic molecules and can speed across the surface without being slowed by friction. He will assume his responsibilities early in March. Pfeiffer has extensive development experience in both academia and the arts community. He spent fourteen years at SUNY, initially directing admissions activities and subsequently serving as the chief development officer. In addition to development and alumni activities, Pfeiffer will also be responsible for the university's communications and marketing program.