Our research focuses on fundamental problems in the area of fluid mechanics and colloids science. In the area of colloids, we have been specifically interested in understanding the physics of film formation and cracking of paints and coatings. For example, why some paint films crack while others do not remains a mystery despite many years of their use. Using a judicious combination of theory and experiment, we have recently explained the cracking mechanism for varied paint systems and demonstrated the conditions required to achieve a crack free film. More recently, we have applied the principles of colloids science to investigate the motion of micro-organisms to nutritional gradients in microfluidic devices. In fluid mechanics, we have been interested in the stability of thin film flows. The motivation for one such problem comes from the combustion instability in high density combustors which results from a coupling between the acoustics in the combustion chamber and the combustion process. We show that the atomization of liquid fuel into droplets is influenced by acoustics at discrete frequencies and could be a major cause for engine failure.