CAMP Annual Report: Page 9
Professor Suresh Dhaniyala, of the Department of Mechanical and Aeronautical Engineering at Clarkson University, has research interests in the fields of aerosol physics and atmospheric aerosol measurements. More specifically, his research activities include nano-aerosol generation and characterization, particle instrumentation development, nanoparticle-fabric interactions, and filtration. Professor Dhaniyala and his group are working on developing several next generation tools for improved real-time characterization of nanoparticles down to 2 nm in size. New tools are also being designed for personal sampling and large scale ambient monitoring of ambient aerosol particles, for fast sizing of nano-aerosol, and for the generation of focused nano-aerosol beams. The development of these techniques will help improve the characterization of airborne particles and their transformation processes in a range of environments. Funding sources for these projects include the NSF, NYSERDA, NASA, the US Navy, and the EPA.
Phase Transformations in the Processing of Advanced Materials
Professor Don H. Rasmussen conducts experimental research focused on (1) crystallization and recrystallization from solution using probe techniques such as thermal analysis and hot stage microscopy; (2) freeze drying of colloidal suspensions to free nano-particles for further processing; (3) critical point drying to generate aerogels for catalyst supports; (4) characterizing concentrated colloidal systems using fiber optic dynamic light scattering; (5) metal particle nucleation and growth in non-aqueous media; (6) nano-scale exfoliated ceramic flake generation by thermal and chemical means, and in the deposition of thin ceramic films; (7) preparation of and protection of electrodes for application in oxidizing and reducing environments for use in fuel cells both PEM and/or SOFC; and (8) generation of complex oxidation/reduction catalysts for fuel cell applications and for controlled sequestration of carbon dioxide. His theoretical interests include: (1) measurement of and understanding the single mode character of the dynamic scattered light power spectrum from concentrated colloidal systems using a bifurcated single mode fiber optic probe and (2) using sol-gel processing and critical point and freeze-drying to general nano and meso-porous catalyst supports and substrates for application in fuel cells and CO2 sequestration
Professor R. Shankar Subramanian is working on interfacial phenomena and their influence on transport problems, especially on drop motion on a horizontal solid surface.
In collaboration with an undergraduate honors student, Chris Gilbert, Professor Subramanian is studying the motion of a liquid drop on a solid surface because of the action of a temperature gradient. Such motion can be important in applications such as the removal of debris in ink jet printing, and in moving drops from one place to another in microfluidic devices.
Welding/Joining and Research to Assess Engineering Systems Reliability
Dr. Daryush Aidun, Professor and Chair, and Dr. Pier Marzocca, Assistant Professor both of the Mechanical and Aeronautical Engineering (MAE) Department at Clarkson University, are carrying out various research activities related to welding/joining of dissimilar materials.
Their work includes Friction Stir Welding (FSW) of Al to Al as well as dissimilar metals, such as Al to brass. It also involves the Internal Orbital GMA Welding Process, which can be used to coat the interior of less expensive piping with high corrosion resistant alloys (such as 310 stainless steel). Professors Aidun and Pier Marzocca are co-directing the Reliability Evaluation and Assessment Laboratory (REAL, http://people.clarkson.edu/~pmarzocc/REAL.html).
Currently their team is evaluating the reliability and life assessment of GE Energy Systems’ gas turbines. This work includes water quality and corrosion experiments as well as physical based modeling to infer about the mechanisms leading to fouling and corrosion and how these affect reliability.
The Process Intensification (PI) Group led by Professor Roshan Jachuck has made considerable progress in the last few years. Based on the concepts of PI, advanced reactor technologies have been developed. The Group has successfully carried out lab and pilot scale demonstrations, which are environmentally friendly, for a range of continuous processes including biodiesel production. Field effects such as microwave, ultrasonic, ultra violet radiation and centrifugal forces are routinely used to combine advances made in Green Chemistry with PI concepts in order to deliver Green Engineering. Industrial and government sponsored projects are currently underway. Some involve energy production, energy efficiency, and pollution prevention in various processes including those used in the food industry. Other work includes the continuous production of metallic nanoparticles, tailored polymer processing, and green processing for the semiconductor industry.
More information about Professor Jachuck and his Group's research activities can be found at their website http://www.clarkson.edu/projects/pict/
CAMP Professor Raghunathan Rengaswamy Receives Promotion
Associate Professor Raghunathan Rengaswamy has been promoted to Full Professor in Clarkson’s Department of Chemical and Biomolecular Engineering. Prior to joining Clarkson in 2002, he was an Assistant Professor at IIT Bombay, India and a Visiting Assistant Professor at Purdue University. He received his Ph.D. in Chemical Engineering from Purdue University, and his B. Tech. degree in Chemical Engineering from the Indian Institute of Technology.
Professor Rengaswamy works in the areas of fuel cells and process systems engineering with his graduate students at Clarkson University. A major research focus of his group is on modeling, optimization, diagnostics and control of Proton Exchange Membrane and Solid Oxide Fuel Cells. He has received funding from several agencies including the NSF, NYSERDA, and ACS-PRF, and companies such as Honeywell, NanoDynamics and KBR.
Rengaswamy has published 50 peer-reviewed journal and 33 peer-reviewed conference articles. His research group has delivered 60 talks at professional and international conferences throughout the world. A paper that he co-authored was chosen by the International Federation of Automatic Control for the Best Paper Prize, for the years 2002 -2005, in Engineering Applications of the Artificial Intelligence Journal in the category called Application-oriented Paper on Symbolic AI approaches. Also a three part review paper that Rengaswamy co-authored has been cited more than 200 times since it was published in 2003.
Professor Rengaswamy received Clarkson University's John W. Graham Jr. Faculty Research Award in 2006 and was chosen by the Clarkson University Chemical Engineering students as the Professor of the Year in 2003. In addition, he was the recipient of the Indian National Academy of Engineering’s Young Engineer Award for the year 2000.