Mentor: Dr. Ranga Narayanan
College of Engineering
"I have always been interested in science, and the scientific method. Getting involved in research with Dr. Narayanan has allowed me to become a better scientist, and a better student."
- Faraday Instability Theory
- University Scholars Program 2016
- American Society of Chemical Engineers
Hobbies and Interests
- Renewable Energy
Faraday Instability using Electrostatic Forcing
"The proposed research involves a novel method for the determination of interfacial tension between two liquids through the use of electrostatically forced Faraday instability. In this method, an oscillatory electrostatic forcing is applied to a liquid-liquid-air system, resulting in pattern formation on both interfaces as a result of resonance between the imposed forcing frequency and the natural frequency of the system. This occurs when the forcing amplitude exceeds a critical value. The critical amplitude and mode shapes are predictable from linear stability theory. Past experiments with mechanical forcing have shown excellent agreement between theory and experimental results. However, in the case of mechanical forcing, the force of gravity overwhelms the effects of interfacial tension on the system stability and therefore it is almost impossible to determine the interfacial tension with accuracy. However, through the use of electrostatic forcing, a force can be introduced to the system that opposes gravity, effectively allowing interfacial tension to play a much larger role in the ultimate determination of the system stability. Since the role of interfacial tension is much more important in electrostatically forced systems, the theoretical stability curves are highly sensitive to the input interfacial tension Accordingly, experimentally mapped stability curves can be fit accurately with theoretical curves by using the interfacial tension as an adjustable parameter. This will allow researchers to determine the interfacial tension with great accuracy through the use of electrostatically forced Faraday instability experiments. The current approach uses a confined cylindrical geometry to hold the liquids, but with additional theoretical models a spherical levitated two liquid system could also be used."