Dr. Gary C. Tepper

Professor, Department of Mechanical Engineering
E-mail: gtepper@vcu.edu
Phone: (804) 827-4079
Fax: (804) 828-3846

Address

401 W. Main Street, Room E3252
P.O. Box 843015
Richmond, Virginia 23284-3015

Education

Ph.D. Engineering Physics, University of California, San Diego, 1993
M.S. Engineering Physics, University of California, San Diego, 1990
B.S. Engineering Science, Pennsylvania State University, 1987

Research topics

Chemical and biological sensors
Nanomaterials
Molecularly imprinted polymers
Radiation detectors
Supercritical fluids
Electroprocessing of polymers

Current projects

Chemical Sensors Based on Imprinted Polymer Nanoparticles - NSF
Biosensing in the Gas Phase, A New Approach Based on Imprinted Nanoparticles of a Liniear Polymer – National Science Foundation
Molecular Engineering, The Next Generation in Gas Purification Technology – Department of Energy
Smart Biosensors Based on Differential Fluorescence Signals from Molecularly Imprinted Polymers – U.S. Army
Chemical Sensors Based on Electrospun Polymeric Nanowires – U.S. Air Force
Development of an Electrospray-Based Air Sampler – U.S. Army

Classes taught

ENGR 305 Sensors and Measurements
ENGR 412 Advanced Engineering Mathematics
ENGR 402/403 Senior Design
ENGR 304 Thermodynamics
EGRM 309 Material Science

Publications

Royal Kessick and Gary Tepper, "Microscale Polymeric Helical Structures Produced by Electrospinning", Applied Physics Letters, 84(24), (2004).
J. Anderson, C. Reynolds, D. Ringelberg, D. Pestov and G. Tepper, "Steady-state and frequency-domain lifetime measurements of an activated molecular imprinted polymer imprinted to dipicolinic acid", The Journal of Fluorescence, 14(3), 269 (2004).
Royal Kessick, John Fenn and Gary Tepper, "The Use of AC Potentials in Electrospinning/Spraying Processes", Polymer, 45, 2981-2984 (2004).
Natalia Levit and Gary Tepper, "Supercritical CO2 -Assisted Electrospinning", The Journal of Supercritical Fluids - in press.
D. Pestov, N. Levit, V. Maniscalci, B. Deveney and G. Tepper, "Molecular Imprinting Using Monomers with Solid-State Polymerization", Analytica Chimica Acta, 504(1), 31-35 (2004).
R. Kessick and G. Tepper, "Microscale Electrospinning of Polymer Nanofiber Interconnections", Applied Physics Letters, 83, no.3, (2003).
Tepper, et al., "Molecular imprinting of small particles, and production of small particles from solid state reactants", United States Patent 6,660,176, December 9, (2003).
C.J. Sullivan, Z. He, G.F. Knoll, G. Tepper and D.K. Wehe, "A High Pressure Xenon Gamma-Ray Spectrometer Using a Coplanar Anode Configuration", Nuclear Instruments and Methods in Physics Research -A, 505, 238-241, (2003).
D. Pestov, N. Levit, R. Kessick, and G. Tepper, "Development of Small Particles of 2,5-Distyrylpyrazine Exhibiting Enhanced Solid-State Reactivity", Polymer, 44(11), 3177 - 3183 (2003).
Royal Kessick, Hugh Maupin, Gary Tepper and Csaba Szeles, "Temperature Dependent Electronic Decay Profiles in CZT: A Contactless Probe of Bulk and Surface Properties", SPIE Proceedings Series, Volume 4784, 64-75 (2002).
Gary Tepper and Royal Kessick, "A Hemispheric High Pressure Xenon Gamma Radiation Spectrometer", Nuclear Instruments & Methods - A, 490, 243-250 (2002).
N. Levit, D. Pestov, G. Tepper, "Development of polymer coatings with high surface-to-volume ratio for chemical sensor applications" Chemical and Biological Sensors and Analytical Methods II, M.A.Butler, P.Vanysek and N.Yamazoe (Eds.), The Electrochemical Society, Inc., Pennington NJ, 2001, 369-376 (2002).
Natalia Levit, Dmitry Pestov and Gary Tepper, "High Surface Area Polymer Coatings for SAW-Based Chemical Sensor Applications", Sensors and Actuators B, 82/2-3, 241-249 (2002).
Gary Troyer, Bernard Keele, Gary Tepper, "Pulse Rise Time Characterization of High Pressure Xenon Gamma Detector For Use In Resolution Enhancement", Journal of Radioanalytical and Nuclear Chemistry, 248 (no.2), 267 (2001).
Robert Palmer and Gary Tepper, "Development of a High Pressure Xenon Ionization Chamber Gamma-Ray Spectrometer for field Deployment in Cone Penetrometers", Journal of Radioanalytical and Nuclear Chemistry, 248 (no.2), 289 (2001).
Gary Tepper, Royal Kessick and Csaba Szeles, "An Investigation of the Electronic Properties of CZT Surfaces Using Pulsed Laser Microwave Cavity Perturbation", SPIE Proceedings Series, Vol. 4507 (2001).
Gary Tepper and Jon Losee, "A Contactless, Microwave-Based Radiation Detector", Nuclear Instruments and Methods - A, 458, 472-477 (2001).
Gary Tepper and Natalia Levit, "Polymer Deposition from Supercritical Solutions for Sensing Applications", Industrial & Engineering Chemistry Research, 39 (12) 4445-4449 (2000).
Royal Kessick, Gary Tepper, Ed Lee and Ralph James, "Thermally Stimulated Carrier Lifetime Measurements in Detector Grade Cadmium Zinc Telluride", Journal of Applied Physics, 87, 2408 (2000).
Gary Tepper, Royal Kessick and Ralph James, "Contactless Measurements of Charge Traps and Carrier Lifetimes in Detector-Grade Cadmium Zinc Telluride and Mercuric Iodide", SPIE Proceedings Series, 4141, 76 (2000).
Gary Tepper, Robert Palmer, John Losee, "High Pressure Xenon Gamma-ray Spectrometers; Recent Developments and Applications", (Invited paper), SPIE Proceedings Series, 3768, 261 (1999).
Gary Tepper, Robert Palmer and Jon Losee, "Development of a high-resolution, room temperature compressed-xenon cylindrical ionization chamber gamma radiation detector", SPIE Proceedings Series, 3446, 81 (1998).
Gary Tepper, Robert Palmer and Jon Losee, "A Cylindrical Xenon Ionization Chamber Detector for High Resolution, Room Temperature Gamma Radiation Spectroscopy", Nuclear Instruments & Methods - A, 413, 467 (1998).
Gary Tepper and Jon Losee, "Detection of Single Photon Ionization Events using a Contactless Microwave Technique", Review of Scientific Instruments, 68, 55 (1997).
Gary Tepper and Jon Losee, "A Measurement of the Transient Response of CdZnTe at 300K and 79K using a Pulsed X-ray Microwave Technique", Applied Physics Letters, 69, 1253 (1996).
Gary Tepper and Jon Losee, "Compressed Xenon X-ray/Gamma-ray Ionization Chamber Detector Incorporating both Scintillation and Electron Pulse Analysis", Nuclear Instruments & Methods - A, 368, 862 (1996).
Gary Tepper and Jon Losee, "High Resolution Room Temperature Ionization Chamber Xenon Gamma Radiation Detector", Nuclear Instruments & Methods - A, 356, 339 (1995).
Gary Tepper and David Miller, "Diffractive Scattering of the Hydrogen Dimer from Ordered Adsorbates on Nickel (110)", Surface Science 312, 310 (1994).
Gary Tepper and David Miller, "Coherent Scattering of the Hydrogen Dimer from a LiF Crystal", Journal of Chemical Physics, 98, 9585 (1993).
Gary Tepper and David Miller, "Diffractive Scattering of Hydrogen dimers from LiF(001)", Physical Review Letters, 69, 2927 (1992).

Conference publications

D. Pestov, N. Levit, G. Tepper, "Molecular imprinting in the gas phase", 2003 MRS Fall meeting, December 1-5, Boston, MA, SymposiumG: Molecularly Imprinted Materials.
Natalia Levit, Dmitry Pestov and Gary Tepper, "The Influence of Polymer Coating Morphology on Microsensor Response", SPIE Photonics, East Conference, 27-31 October 2003, Providence, Rhode Island, USA.
J. Anderson, D. Pestov, R. Fischer, S. Webb, G. Tepper, "Fluorescence Measurements of Activity Associated with a Molecularly Imprinted Polymer Imprinted to Dipicolinic Acid", SPIE Photonics, East Conference, 27-31 October 2003, Providence, Rhode Island, USA.
O. Guney-Altay, N. Levit, D. Pestov and G. Tepper, "Development of Nanocomposite Polymeric Particles from a Multiple-Component, Rapidly Expanding Supercritical Solution", AIChE Annual Meeting, November 16-21 2003, San Francisco.
Natalia Levit, Dmitry Pestov, Ozge Guney-Altay and Gary Tepper, "Application of Rapid Expansion of Supercritical Solutions for the Development of Microfabricated Sensors", 6th International Symposium on Supercritical Fluids, Versailles, France, April 28-30, (2003).
Natalia Levit, Dmitry Pestov, Ozge Guney-Altay and Gary Tepper, "High-quality polymer coatings for acoustic-wave sensors", 4th Acoustical wave sensor workshop (AWSW-4), Salbris, France April 23-26, (2003).
Natalia Levit, Dmitry Pestov, Ozge Guney-Altay and Gary Tepper, "Glassy polymer coatings for acoustic-wave sensors", 4th Acoustical wave sensor workshop (AWSW-4), Salbris, France April 23-26, (2003).
Dmitry Pestov, Natalia Levit, Ozge Guney-Altay and Gary Tepper, "Development of Encapsulated Microspheres from a Multiple-Component, Rapidly Expanding Supercritical Solution for Sensing Applications", 6th International Symposium on Supercritical Fluids, Versailles, France, April 28-30, (2003).
D. Pestov, N. Levit, V. Maniscalco and G. Tepper, "Molecular Imprinting Using Monomers with Solid-State Polymerization." Molecularly Imprinted Polymer Science and Technology II. Ed. K.R. Brain and C.J. Allender, p.72. 2-nd International Workshop on Molecular Imprinting, 15-19 September (2002), La Grande Motte, Laguedoc, France.
Natalia Levit, Dmitry Pestov, and Gary Tepper, "Nano-Scale Coating Technique for Miniature Sensors", Proceedings of the Electrochemical Society (2002).
Dmitry Pestov, Natalia Levit, Vincent M. Maniscalco, and Gary Tepper, "Molecularly Imprinted Polymers for SAW Sensors" Proceedings of the Electrochemical Society (2002).
B. Deveney, D. Pestov, N. Levit, and G. Tepper, "SAW-based chemical sensor: signal evaluation", 80th Annual Conference of the Virginia Academy of Science, Hampton, VA, May 21-24, VAS, Virginia Journal of Science, (2002).
D. Pestov, N. Levit, and G. Tepper, "New approach for molecular imprinting", 80th Annual Conference of the Virginia Academy of Science, Hampton, VA, May 21-24, VAS, Virginia Journal of Science, (2002).
Dmitry Pestov, Natalia Levit and Gary Tepper, "Development of TDI Nanoscale Structures", Proceedings of the 79th Annual Conference of the Virginia Academy of Science, Harrisonburg, VA (2001).
Royal Kessick and Gary Tepper, "The Effect of Surface Preparation on Carrier Lifetimes in Detector Grade CdZnTe" Proceedings of the 79th Annual Conference of the Virginia Academy of Science, Harrisonburg, VA (2001).
Gary Tepper, "High Pressure Xenon Gamma Radiation Detectors", Proceedings of the Radiation Detection Technologies Symposium for the National Security Community", November (2000).
Natalia Levit and Gary Tepper, "Micro Engineering of Polymer Surfaces for Chemical Sensing Applications", Proceedings of the 220th American Chemical Society National Meeting, Washington, DC August (2000).
Gary Tepper and Robert Palmer, "High Pressure Xenon Detector for Cone Penetrometer Application", Proceedings of the Industry Partnerships to Deploy Environmental Technologies Conference, October (2000).
Gary Tepper, Natalia Levit and Dmitry Pestov, "Microfabricated Chemical Sensors Based on Polymer Nanoparticles", Proceedings of the EPA Conference on Monitoring Technologies, Boston, MA September (2000).
Natalia Levit and Gary Tepper, "Polymer Micro Engineering for Chemical Sensing Applications", Proceedings of the 78th Annual Conference of the Virginia Academy of Science, Radford, VA (2000).
Dmitry Pestov, Natalia Levit, David Colby and Gary Tepper, "Chemically Sensitive Nanoparticles Developed from Rapid Expansion of Supercritical Solutions", Polymer Materials Science and Engineering, 83, 538 (2000).
Royal Kessick and Gary Tepper, "An Investigation of Carrier Lifetimes and Deep Traps in Wide Bandgap Compound Semiconductors", Proceedings of the 78th Annual Conference of the Virginia Academy of Science, Radford, VA (2000).
N. Levit, D. Pestov, G. Tepper. "Sensing surfaces developed from supercritical fluid polymer Processing", Presented at the Air and Waste Management Association (AWMA). International Symposium on Measurement of Toxic and Related Air Pollutants. Research Triangle Park, North Carolina, September 12-14, 2000.
Natalia Levit and Gary Tepper, "Biodegradable Scaffold Formation from Supercritical Solutions", Proceedings of the 2nd Conference on the Development of Technology in Medicine in Virginia, Charlottesville, VA November (1999).
Gary Tepper and Robert Palmer, "High Pressure Xenon Detector for Cone Penetrometer Application", Proceedings of the Industry Partnerships to Deploy Environmental Technologies Conference, October (1999).
Gary Tepper, "High Pressure Xenon Gamma Radiation Detector for the Characterization of Subsurface Radioactive Waste", Proceedings of the 45th Conference on Bioassay, Analytical & Environmental Radiochemistry, National Institute of Standards and Technology, Gaithersburg, MD October (1999).
Natalia Levit, Davit Colby, Rachel Mohamed and Gary Tepper, "Polymer Processing From Supercritical Solution", Proceedings of the 3rd International Conference on Advanced Polymers via macromolecular engineering", Williamsburg, VA, August (1999).
Natalia Levit and Gary Tepper, "Engineering of Polymeric Surfaces by Rapid Expansion of Supercritical Solution", Proceedings of the 77th Annual Conference of the Virginia Academy of Science, Norfolk, VA (1999).
R. F. Kessick, and Gary Tepper, Carrier Lifetime Determination by Microwave Cavity Perturbation", Proceedings of the 77th Annual Conference of the Virginia Academy of Science, Norfolk, VA (1999).
Matthew Sherman and Gary Tepper, "High Pressure Xenon Gamma Radiation Spectrometers", Proceedings of the 77th Annual Conference of the Virginia Academy of Science, Norfolk, VA (1999).
Natalia Levit and Gary Tepper, "Rapid Expansion of Supercritical Solutions (RESS) as a Route for Polymer Materials Development", 7th Annual Symposium, High Technology Materials Center, Richmond, VA (1998).
Anthony Guiseppi-Elie, Ann M. Wilson, Thomas S. Oh, Andrew R. Sujdak, Ellen M. Davies, Sheldon P. Wesson, Gary E. Wnek, Philippe Lam, Gary Tepper, Oliver Bogler, Gary Bowlin, John Alexander, and Robert Mattauch, "Microfabricated Impedimetric Array Chemical and Biological Sensors Using Smart Recognition-Transduction Electroconductive Hydrogels", NIST-ATP Workshop on Chemical Sensors Biosensors, Los Angeles, CA (1998).
Anthony Guiseppi-Elie, Gary Wnek, Philippe Lam, Gary Tepper, Oliver Bogler, Gary Bowlin, John Alexander and Robert Mattauch, "Probing Biochemical and Biological Phenomena Using Electrical Impedance Techniques: Applications to Biochips", Fifth Annual Conference on Biochip Technologies, San Jose, CA (1998).
Gary Tepper and David Miller, "Diffractive Scattering of Hydrogen Clusters from LiF(001)", Proceedings of the XIVth International Symposium on Molecular Beams, Pacific Grove, CA June (1992).
Gary Tepper and David Miller, "Diffractive Scattering of Hydrogen Dimers from LiF(001)", Proceedings of the 52nd Annual Physical Electronics Conference, UC Irvine, CA June (1992).