CAMP Annual Report: Page 4
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Computational and Experimental Study of Airflow and Particulate Pollutant Transport and Concentration around the Center of Excellence Building
Professors Ahmadi and Bohl are studying the airflow conditions and particulate pollutant transport around the Center of Excellence Building in Syracuse. A scaled model of the building has been tested in the wind tunnel. Airflow velocity and turbulence intensity around the building model were measured in the wind tunnel using the PIV technique. A computer model for the airflow condition has been developed and was verified by comparisons with the wind tunnel data. The computer model provides a tool for analyzing the airflow around the actual building. In particular, the particulate pollutant dispersion near the building is being assessed and the results are to be compared with the field data.
Professor Ahmadi and Professor Issen, in collaboration with the scientists from the US Department of Energy, are working to assess the safety of carbon dioxide sequestration in geological formation in addition to understanding hydraulic fracturing. As part of this project, computer models for gas-liquid flows in porous media, as well as in rock fractures, are being developed. In particular, the effect of variation of confining pressure on the effective permeability of fracture flows is being analyzed. The eventual goal is to implement the research findings into a computational code for modeling large scale geological reservoir simulations. In addition, a better understanding of hydraulic fracturing is expected to lead toward safe and sustainable production of shale based natural gas.
COLLOIDAL DISPERSIONS AND PROCESSING
Professor Devon Shipp and his team focus on the synthesis and study of hydrogel systems and novel degradable elastomers. Industrially-sponsored research projects leverage Professor Shipp's expertise in making polymers with well-defined molecular weights and chemical functionality for applications in ophthalmic and dental applications. The group has also developed novel degradable polymers, with Shipp and his students having demonstrated that linear and crosslinked polyanhydrides can be made using photoinitiated thiol-ene chemistry. This is a simple and effective method of making crosslinked structures that have surface degradation characteristics.
Papers describing this work recently appeared in Chemical Communications, Macromolecules and ACS Applied Materials & Interfaces. This technology is expected to gain usage in many biomedical applications such as drug delivery, orthopedics, tissue engineering, scaffolds, and even lithography. Also Shipp’s group, in collaboration with Professor Sitaraman Krishnan (from Clarkson’s Department of Chemical and Biomolecular Engineering) has developed the first colloidal thiol-ene polymerizations. The process yields sub-micrometer to micrometer-sized particles very quickly and efficiently, and can be achieved using photoinitiation in a suspension polymerization. This research is published in ACS Macro Letters. Check out the following link. http://pubs.acs.org/doi/abs/10.1021/mz300358j
More information about Professor Shipp’s research activities can be found at www.clarkson.edu/%7eshippda.
Professor S.V. Babu’s research group is continuing its fundamental investigations of various aspects of chemical-mechanical planarization (CMP) of metal and dielectric films. While continuing the development of more chemically active dispersions for low pressure planarization of InP, GaAs, InGaAs, Ge, Co, and Ru, and ensuring appropriate selectivity with respect to the underlying low-k dielectric films, they have also identified compositions that can minimize galvanic corrosion for Al/Co, Cu/Co and Cu/Mn layers. The earlier work on Ge and InP was conducted collaboratively with IMEC, Belgium, to which they have added a project on Ru. Several results obtained while polishing Ru, Co and Ge films and structures have been recently published. The results for the other films and structures should be published in the near future.
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STATE-FUNDED RESEARCH PROJECTS
Eight research projects were supported by the Centers for Advanced Technology (CAT) Program of the Empire State Development Division of Science, Technology, and Innovation (NYSTAR) in the 2011 - 2012 fiscal year. Project titles and principal investigators are listed below for each research area.
Particle Synthesis and Properties
- NY-Best Market Driven Research Program with GE Global (for particle synthesis) -D. Goia
- Feasibility Study of Concrete Confined with Fiberglass / Basalt Fiber Tubes- S. Peethamparan and A. Achuthan
- Development and Construction of a UCT System- C. Cetinkaya
- Determination of the Viscosity of Dense Colloidal Suspensions (Slurries) by DNS-J. McLaughlin and X. Jia
- Analysis of Antenna Designs for Wind Turbine Clutter Mitigation-W. Jemison
- Characterization of Al-CNT Composite Materials- R. Jha
- Transformative Green Aerospace Transportation System- P. Marzocca
- NY-Best Market Driven Research Program with GE Global (for electrochemical processes and microstructural analysis) -D. Roy