Dr. Parthasakha Neogi     Missouri University of Science and Technology    133 Schrenk Hall    400 West 11th Street    Rolla, MO 65409-1230    Phone: 573-341-4460    E-mail: neogi@mst.edu BS ChE, Indian Institute of Technology, India, 1973 MS ChE, Indian Institute of Technology, India, 1975 PhD ChE, Carnegie-Mellon University, 1975

Research Areas

Interfacial  transport phenomena- dynamic contact angles, solubilization kinetics, electrodeposition

Research Statement

The area of research is interfacial phenomena with emphasis on non-equilibrium effects.  Fluid mechanics of a liquid displacing another fluid on a solid surface (“wetting kinetics”) shows that all stresses are infinite at the contact line.  Removal of this singularity requires the use of a reasonable slip velocity and slip velocity has been used to obtain the rates of movement of the leading edge (“contact line”) in a variety of problems over years.  These cases where the liquid spreads on its own, and at very low speeds, are called spontaneous spreading.  At present time the case of forced spreading is being analyzed.  Another area of research is that of mass transfer in surfactant systems.  Typical one key component of detergency is that of solubilization where water insoluble oils are included into the surfactant micelles.  Investigations into kinetics of solubilization also takes one into the kinetics of the contact line above.

Representative Publications

 P. Neogi (2010) Large dynamic contact angles, Chem. Eng. Sci. 65, 708-712.

C.A. Miller and P. Neogi (2008) Interfacial Phenomena Equilibrium and Dynamic Effects, 2^nd ed., CRC Press, Baton Rouge,  La.

Neogi, P. (2006) Electrochemical Deposition in Deep Vias, AIChE J 52, 354.

R. Shah and P. Neogi (2002) Interfacial Resistance in Solubilization Kinetics, J. Colloid Interface Sci. 253, 443-454.

P. Neogi, M. Kim and S. E. Friberg (1987) Micromechanics of Surfactant Microstructures, J. Phys. Chem. 91, 605-611.