faculty
Primary Faculty / Affiliate Faculty / Emeritus and retired Faculty
Our group’s current research efforts are largely devoted to the study of advanced electronic materials processing issues, particularly those related to thin film deposition (the group operates one Molecular Beam Epitaxy (MBE) and six chemical vapor deposition (CVD) systems. In one system we have coupled a Raman spectrometer to a CVD reactor, which can be x-y-z translated to measure gas phase composition and temperature profiles.…
My work has to do with the stability of phase boundaries as one phase displaces another. Of particular interest are electrodeposition, solidification, precipitation, and other related phenomena.
EDUCATION
Ph.D., 1964, Carnegie Mellon University
Selected PUBLICATIONS
- L.E. Johns, R. Narayanan, “The Rayleigh-Taylor Instability of a Surface of Arbitrary Cross Section,” Physics of Fluids 23 012108 (2011).
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ELECTROCHEMICAL ENGINEERING The research performed in this group represents applications of electrochemical engineering to systems of practical importance. In recent work, electrokinetic phenomena were exploited to enhance continuous separation of water from dilute suspensions of clay associated with phosphate mining operations. The technology developed in this project is intended to greatly reduce the environmental impact of mining operations.…
Our research projects are in three major areas: biomedical, surfactant solutions and advanced materials. In the biomedical area, we investigate surface chemical aspects of polymer adsorption on contact lenses in relation to biolubrication and comfort in the eyes. We also study transdermal diffusion of local anesthestics.
In various engineering processes such as cleaning, lubrication or dispersions, the adsorption of surfactants at the interface is very important.…
Current research, in collaboration with Professor Pratap Pullammanappallil of the UF Agricultural and Biological Engineering Department, focuses on the modeling and optimization of bioprocesses for the production of biofuels and other useful products of bioprocesses. Of particular interest is a remarkable cyanobacterium, isolated by Professor Edward J. Phlips of the UF School of Forest Resources and Conservation, that with CO2-enriched air produces high concentration of cells and of an extracellular polysaccharide without needing fresh water or external addition of nitrogenous nutrients. …