D. Keith Roper
Associate Professor
Charles W. Oxford Professor of Emerging Technologies
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Dr. Roper studies near- and far-field features of electromagnetically coupled surface waves (e.g. plasmons) and low-frequency modes (e.g. molecular vibrations, optical phonons) on nanoscale structures which are important in biosensing, solar energy, optoelectronics, microthermalfluidics, spectroscopy, diagnostics and therapeutics. He has developed processes for cell culture, fermentation, biorecovery and analysis of polysaccharide, protein, DNA and adenoviral-vectored antigens at Merck & Co. (West Point, PA), extraction of photodynamic cancer therapeutics at Frontier Scientific, Inc. (Logan, UT), and virus binding methods for Millipore Corp (Billerica, MA). His degrees are in chemical engineering from Brigham Young University (B.S., 1989) and University of Wisconsin (Ph.D., 1994) where he worked with Ed Lightfoot. His research has led to 25+ peer reviewed publications and proceedings, 1 U.S. Patent, 6 patent applications, 1 viral and 3 bacterial vaccine products, 6 process documents, and 50+ presentations and process equipment designs. He holds memberships in Tau Beta Pi, ASEE and AIChE.
Education
PhD, Chemical Engineering, University of Wisconsin-Madison, 1994BS, Chemical Engineering (Magna Cum Laude), Brigham Young University, 1989
Selected Publications
Ahn, W. and Roper, D.K. Transformed gold island film improves light-to-heat transduction of nanoparticles on silica capillaries. J. Phys. Chem. C. (2008) 112(32); 12214-12218.
Ahn, W., Taylor, B., Dall-Asen, Y., Roper, D.K. Electroless gold island thin films: photoluminescence and thermal transformation to nanoparticle ensembles. Langmuir (2008) 24 (8), 4174 -4184.
Roper, D.K., Ahn, W., Hoepfner, M. Microscale heat transfer transduced by surface plasmon resonant gold nanoparticles. J Phys Chem C. (2007) 111(9); 3636-3641.
Roper, D.K. Determining Surface Plasmon Resonance Response Factors for Deposition onto 3-D Surfaces. Chem. Eng. Sci. (2007) 62:1288-1996.
Roper, D.K. Enhancing Lateral Mass Transport to Improve the Dynamic Range of Adsorption Rates measured by Surface Plasmon Resonance. Chem. Eng. Sci. 61(8) (2006) 2557-2564.
Roper, D.K. and Nakra, S. Adenovirus type 5 intrinsic adsorption rates measured by surface plasmon resonance. Anal Biochem. 348 (2006) 75-83.
Roper, D.K. and Trujillo, E.M. Photovoltaic Hydrogen Production Prototype for Hydrogen Sustainability. J. Eng. Sust. Dev. 1 (2006) 77-84.
Bandolin, N., Roper, D.K., "Greens Function Analysis of Dispersion in Membranes", Proceedings of The National Conference on Undergraduate Research (NCUR) 2003 University of Utah, Salt Lake City, Utah March 13-15, 2003.
Mayne, J., Vance, A., Roper, D.K., "Hemin Inhibition of Staphlyococcus aureus in Microplate Assays", Proceedings of The National Conference on Undergraduate Research (NCUR) 2003 University of Utah, Salt Lake City, Utah March 13-15, 2003.
Joyce, J.G., Abeygunawarda, C., Xu, Q., Cook, J.C., Hepler, R., Przysiecki, C.T., Grimm, K.M., Roper, K., Ip, C.C.U., Cope, L., Montgomery, D., Chang, M., Campie, S., Brown, M., McNeely, T.B., Zorman, J., Maira-Litran, T., Pier, G.B., Keller, P.M., Jansen, K.U., and Mark, G.E., III. Isolation, structural characterization, and immunological evaluation of a high-molecular-weight exopolysaccharide from Staphylococcus aureus. Carbohydrate Research 338(9) 22 April 2003, 903-922.
Shanklin, T., Roper, D.K., Yegneswaran, P.K., and Marten, M.R., "Selection of Bioprocess Simulation Software for Industrial Applications", Biotechnol Bioeng. A. 72(4) (2001) 483-489.
Shanklin, T., Yegneswaran, P.K., Roper, D.K., Yegneswaran, P.K., and Marten, M.R., "Evaluation of Process Simulation Software for Biotechnology Applications", Pharmaceutical Online, March 5, 1999
Roper, D.K. and E.N. Lightfoot, "Chromatography of Biomolecules using Adsorptive Membranes" (Review), J. Chromatogr. A. 702(1-2) (1995) 3-26.
Lightfoot, E.N., A.M. Athalye, J.L. Coffman and D.K. Roper, "Nuclear Magnetic Resonance and the Design of Chromatographic Separations", J. Chromatogr. A. 707(1) (1995) 45-55.
Roper, D.K. and E.N. Lightfoot, "Estimating Plate Heights in Stacked-Membrane Chromatography by Flow-Reversal", J. Chromatogr. A. 702(1-2) (1995) 69-80.
Roper, D.K. and E.N. Lightfoot, "Mean Residence Time and Variance in Steady Counterflow Separations", Chem. Eng. Sci., 49(10) (1994) 1621-1630.
Lightfoot, E.N. and D.K. Roper, "What Can Simulated Moving Beds Do for the Chromatographer?", Proceedings of PrepTech'94, Secaucus, NJ, Mar. 22-24, 1994.
Coffman, J.L., D.K. Roper and E.N. Lightfoot, "High-Resolution Chromatography of Proteins in Short Columns and Adsorptive Membranes", Bioseparations 4 (1994) 183-200.
Roper, D.K. and E. N. Lightfoot, "Comparing Steady-Counterflow Separation with Differential Chromatography", J. Chromatogr. A, 654 (1993) 1-16.
Wilson, H.L., D.K. Roper, W.V. Wilding, G.M. Wilson, "Boiling Point Measurements for Several Aqueous Solutions of Inorganic Salts", NIPER, P0 N15296, Aug. 22, 1989.
Izatt, R.M., D.K. Roper, R.L. Bruening and J.D. Lamb, "Macrocycle-Mediated Cation Transport Using Hollow Fiber Supported Liquid Membranes", J. Membr. Sci. 45 (1989) 73.