Biocatalysis, HDS Catalysis, Biofuels, Protein Purification
Courses Taught:
ChE 761/861 Biochemical Engineering
ChE-ENE 752/852 Process Dynamics and Control
ChE-ENE 708 Chemical Engineering Design
Recent Publications:
P. O. Jones and P.T. Vasudevan, “Cellulose Hydrolysis by Immobilized Trichoderma reesei Cellulase,” Biotechnology Letters. 32(1), 103 (2010).
P.T. Vasudevan, M. D. Gagnon and M. S. Briggs, “Environmentally Sustainable Biofuels – The Case for Biodiesel, Biobutanol and Cellulosic Ethanol,” in Sustainable Biotechnology: Natural Resources and New Perspectives, Eds. Steven Harvey and Om Singh, Springer, pp. 43-62 (2010).
B. Fu and P.T. Vasudevan, “Effect of Solvent-Cosolvent Mixtures on Lipase Catalyzed Transesterification of Canola Oil,” Energy and Fuels, 4 (9), 4646 (2010).
P.T. Vasudevan and B. Fu, "Environmentally Sustainable Biofuels: Advances in Biodiesel Research," Waste and Biomass Valorization, 1 (1), 47 (2010).
M. D. Gagnon and P.T. Vasudevan, "Effect of Enzyme Source and Solvent on Transesterification Activity.” Energy and Fuels. In Press. (2011).
Ph.D., Chemical Engineering, University of Rochester, 2006
B.S. & M. S., Biochemical Engineering, East China University of Science & Technology, Shangha, 2001
Research Interests:
Nanomaterials, Fuel Cells, Catalysis
Courses Taught:
CHE 707 Chemical Engineering Kinetics
CHE 604 Chemical Engineering Thermodynamics
CHE 712/812 Introduction to Nuclear Engineering
CHE 932 Advanced Chemical Engineering Kinetics
Recent Publications:
Feygenson, M.; Teng, X.; Inderhees, S. E.; Yiu, Y.; Du, W.; Han, W.; Wen, J.; Xu, Z.; Podlesnyak, A. A.; Niedziela, J. L.; Hagen, M.; Qiu, Y.; Brown, C. M.; Zhang, L.; Aronson, M. C., “Low-energy magnetic excitations in Co/CoO core/shell nanoparticles”. Phys. Rev. B. 2011, 83, 174414
Du, W. X.; Su, D.; Wang, Q.; Frenkel, A. I.; Teng, X. W., “Promotional Effects of Bismuth on the Formation of Platinum-Bismuth Nanowires Network and the Electrocatalytic Activity toward Ethanol Oxidation”. Crystal Growth & Design 2011, 11, (2), 594-599.
Teng, X.W., Han, W., Ku, W., Hücker, M. Synthesis of ultrathin palladium and platinum nanowires and their magnetic properties. Angew. Chem.–Int. Ed., 2008, 47, 2055–2058.
Teng, X.W., Wang, Q., Liu, P., Han, W., Frenkel, A.I., Wen, W., Marinkovic. N., Hanson, J.C., Rodriguez, J.A. Formation of Pd/Au nanostructures from Pd nanowire via galvanic replacement reaction. J. Am. Chem. Soc., 2008, 130, 1093–1101.
Maksimuk, S., Teng, X. W., Yang, H. Roles of twin defects in the formation of platinum multipod nanocrystals. J. Phys. Chem. C, 2007, 111, 14312–14319.
Ph.D., Chemical Engineering, Pennsylvania State University, 1999
B. Tech., Chemical Engineering, Indian Institute of Technology, Bombay, 1993
Research Interests:
Fluid Dynamics, Microfluidics
Predicting two-phase flow of Newtonian fluids is important in a variety of applications such as materials, polymer, and food processing, pharmaceuticals, and microfluidics. The interface between two fluid phases is often characterized by a single property, the interfacial tension. Variation of interfacial tension along an interface leads to tangential stresses that are known as Marangoni stresses. Temperature gradient or a gradient in concentration of surface-active agents (surfactants) along the interface leads to surface tension variation along the interface. Furthermore, if the bulk fluids exhibit viscoelasticity, they can store energy to some extent and display partial recovery upon removal of stress. The focus of this research is to understand the fundamental issues of how surface tension gradients affect free surface flows, how surfactants can be added to control flows, and how elasticity in the bulk phase changes the deformation and break up of a dispersed fluid phase.
Courses Taught:
CHE 601 : Fluid Mechanics and Unit Operations
CHE 612 : Chemical Engineering Laboratory I
CHE 713 : Chemical Engineering Laboratory II
CHE 913 : Advanced Fluid Dynamics
CHE 722/822 Introduction to Microfluidics
Recent Publications:
Y. Cui and N. R. Gupta, "Drop formation in co-flowing fluid systems," in press for International Journal of Transport Phenomena (2011).
J. Li, V. Bulusu, and N. R. Gupta, “Buoyancy-driven motion of bubbles in square channels,” Chem. Eng. Sci., 63(14), 3766-3774 (2008).
N. R. Gupta and A. Borhan, “Thermocapillary convection in Double-Layer Fluid Structures within an Two-dimensional Open Cavity,” J. Coll. Int. Sci., 315(1), 237-247 (2007).
N. R. Gupta, H. Haj-Hariri, and A. Borhan, "Thermocapillary flow in double-layer fluid structures,” Ann. N. Y. Acad. Sci., 1077, 395-414 (2006).
F. Jin, N. R. Gupta, and K. J. Stebe, “The detachment of a viscous drop in a viscous solution in the presence of a soluble surfactant,” Phys. Fluids, 18(2), 022103 (2006).
Ph.D., Chemical Engineering, Brown University, 2008
Sc.M., Engineering, Brown University, 2005
B.S., Chemical Engineering, Northeastern University, 2004
Research Interests:
Professor Goldfarb’s research tackles issues surrounding the past, present and future generation of energy, and its impact on the environment. These three areas include: (1) mitigating the environmental impacts of energy-derived and novel technology pollutants via improvements to fate and transport models, (2) developing new materials to reduce waste and remediate or retard the spread of contaminants, and (3) investigating economically viable and industrially scalable alternative energy sources. Naturally, there is significant overlap between these three areas that transcends traditional disciplinary boundaries.
Courses Taught:
CHE 502 Introduction to Chemical Engineering II
CHE 614 Separation Processes
CHE 705/805 Fossil Fuels and Renewable Energy Sources
ENE 709/CHE 809 Fundamentals of Air Pollution: Its Control and Origin
CHE 923 Advanced Thermodynamics
Recent Publications:
Goldfarb, J.L. and I. Külaots “Melting Points and Enthalpies of Fusion of Anthracene and its Heteroatomic Counterparts.” Journal of Thermal Analysis and Calorimetry. 2010. 102:1063-1070.
Külaots, I., J.L. Goldfarb and E.M. Suuberg. “Characterization of Chinese, American and Estonian Oil Shale Semicokes and their Sorptive Potential.” Fuel. 2010. 89: 3300-3306.
Goldfarb, J.L. and E.M. Suuberg. “Deviations from Ideal Sublimation Vapor Pressure Behavior in Mixtures of Polycyclic Aromatic Compounds with Interacting Heteroatoms.” Journal of Chemical Thermodynamics. 2010. 42: 1009-1015.
Goldfarb, J.L. and E.M. Suuberg. “Vapor Pressures and Sublimation Enthalpies of Seven Heteroatomic Aromatic Compounds Measured via the Knudsen Effusion Technique.” Journal of Chemical Thermodynamics. 2010. 42: 781-786.
Goldfarb, J.L. and E.M. Suuberg. “Raoult’s Law and its Application to Sublimation Vapor Pressures of Mixtures of Polycyclic Aromatic Hydrocarbons.” Environmental Engineering Science. 2008. 25: 1429 –1438.
Wilson, R. and I.H. Farag (2011), “Parametric Study of Biodiesel Quality and Yield Using a Bench-Top Processor ,” International Journal of Oil, Gas and Coal Technology (IJOGT) (Accepted for publication)
My research focuses on blood rheology in microvessel networks. I am interested in Fahreus effect (reduction in blood cell concentration in small bore vessels), the Fahreus-Lindqvist effect (reduction in apparent viscosity in small bore vessels) and plasma skimming (the separation of cellular and plasma phases that occurs at the junction of small bore vessels. Currently I am working on a model of blood flow through networks which incorporate each of these rheological effects. Computational results present interesting nonlinear dynamics including fixed point attractors, limit cycles, and changes in the character and geometry of the attractor akin to period doubling. Experimental measurements are planned to verify these computational results.
Courses Taught:
Blood rheology in microvessel networks, Cell Adhesion
Recent Publications:
Nonlinear dynamics of microvascular blood flow. R.T. Carr and M. Lacoin. Annals of Biomedical Engineering, 26,641-652, 2000.
Oscillations in a simple microvascular network. R.T. Carr, J.B. Geddes, and F. Wu. Annals of Biomedical Engineering. 33, 764-771, 2005.
The onset of oscillations in microvascular blood flow. JB Geddes, RT Carr, N Karst, F Wu. SIAM Journal on Applied Dynamical Systems, 6(4):694-727, 2007.
Gardner, D. Yiyang, L., Small B., Geddes, J.B., Carr, R.T., Multiple equilibrium states in a micro-vascular network. Mathematical BioSciences 227(2):117-124, 2010 doi:10.1016/j.mbs.2010.07.001
Geddes, J.B., Carr R.T., Wu, F. Lao, Y., Maher, M., Blood flow in microvascular networks: A study in nonlinear biology. Chaos 20(4) article 045123 doi:10.1063/1.3530122
Advanced Heat Transfer, Corrosion, Introduction to Chemical Engineering, Thermodynamics
Recent Publications:
E. Garcia-Cardona, E.H. Wong and D. P. Barkey , NMR Spectral Studies of Interactions between the Accelerants SPS and MPS and Copper Chlorides, Journal of the Electrochemical Society, 158 D143 (2011).
D. Barkey and J. McHugh, Pattern Formation in Anodic Aluminum Oxide Growth by Flow Instability and Dynamic Restabilization, Journal of the Electrochemical Society, 154, C388 (2010).
Z. Zhang and D.P. Barkey, Nucleation of Tin and Tin-Silver Alloy on Copper and Nickel in Acid Plating Baths, Journal of the Electrochemical Society, 154, D550 (2007).
K. Kondo, T. Yonezawa, D. Mikami, T. Okubo, Y. Taguchi, K. Takahashi and D. Barkey, High-Aspect-Ratio Copper-Via-Filling for Three- Dimensional Chip Stacking -2) Reduced Electrodeposition Process-Time, Journal of the Electrochemical Society, 152, H173 (2005).
M.A. Pasquale, D.P. Barkey and A.J. Arvia, Influence of Additives on the Growth Velocity and Morphology of Two Dimensional Copper Electrodeposits, Journal of the Electrochemical Society, 152, C149 (2005).
