Invited Lectures:

keynote lecture: "Theory of Electrochemical Processes at an Inlaid Disc Microelectrode under Steady-State Conditions", Seventh Australian Electrochemistry Conference, University of New South Wales, Australia, February, 1988.
"Slow Electron Transfer at Microdisc Electrodes", Seventh Australian Electrochemistry Conference, University of New South Wales, Australia, February, 1988.
"Kinetic Parameters From Steady-State Voltammograms At Microdisc Electrodes: Theoretical Considerations", Advanced Study Institute on Microelectrodes: Theory and Applications, Portugal, May, 1990.
"The Time Required For Microelectrodes To Reach A Voltammetric Steady State", University of Southampton, United Kingdom, August, 1990.
"Kinetic Parameters From Steady-State Voltammograms At Microdisc Electrodes: Theoretical Considerations", Humboldt Universitat, East Berlin, G.D.R., August, 1990.
"The Time Required For Microelectrodes To Reach A Voltammetric Steady State", J. Heyrovsky Centennial Congress on Polarography, Prague, Czechoslovakia, August, 1990.
"Steady-State Voltammetry at a Inlaid Microdisc: Comparison of Three Approaches", 33rd IUPAC Congress, Budapest, Hungary, August, 1991.
"Steady-State Voltammetry at an Inlaid Microdisc: Comparison of Three Approaches", Electrochemical Society Meeting, Washington, D.C., May 1991.
"New Developments in Steady-State Voltammetry at Microelectrode Geometries", Tufts University, Massachusetts, November, 1991.
"New Developments in Steady-State Voltammetry at Microelectrode Geometries", University of Massachusetts at Amherst, November, 1991.
"New Developments in Steady-State Voltammetry at Microelectrode Geometries", Rhode Island College, Rhode Island, December, 1991.
"New Developments in Steady-State Voltammetry at Microelectrode Geometries", University of Texas at Austin, April 1992.
"Steady-State Currents At Electrodes With Rotationally Invariant Surfaces: Conical and Spherical Segment Electrodes", 206th National ACS Meeting, Chicago, Illinois, August,1993.
"Steady-State Currents At Electrodes With Rotationally Invariant Surfaces: Conical and Spherical Segment Electrodes", 184th Meeting of the Electrochemical Society, NewOrleans, Louisiana, October, 1993.
keynote lecture: "Mechanistic Aspects of Electrode Processes in the Steady State",45th Annual Meeting of the International Society of Electrochemistry, Porto, Portugal, August/September, 1994
“Microelectrode Studies of Marine Environments” at 193rd Meeting of the Electrochemistry Society, San Diego, California, May 1998.
“Ultramicroelectrode Fabrication: Voltammetric Analysis and Scanning Electrochemical Microscopy”, Pittcon, New Orleans, March 2001.
“Investigation of Hydrogen Electrocatalysis at Noble Metal Electrodes by Scanning Electrochemical Microscopy”, 224th ACS National Meeting, Boston, MA, August, 2002.
“Nanoelectrode Arrays: Application to Biological Sensing”, Electrochemical Biosensors Workshop, Army Research Laboratory, September, 2002.
“Investigation of Hydrogen Electrocatalysis at Noble Metal Electrodes by Scanning Electrochemical Microscopy”, 202nd Meeting of The Electrochemical Society, Salt Lake City, Utah, October, 2002.
“Fabrication and Characterization Of Multielectrode Arrays Using Scanning Electrochemical Microscopy”, 202nd Meeting of The Electrochemical Society, Salt Lake City, Utah, October, 2002.
“Investigation of Hydrogen Electrocatalysis at Noble Metal Electrodes by Scanning Electrochemical Microscopy”, S.W. Regional ACS Meeting, Austin, TX, November, 2002.
“Investigation of Hydrogen Electrocatalysis at Noble Metal Electrodes by Scanning Electrochemical Microscopy”, University of Toledo, December, 2002.
“Scanning Electrochemical Microscopy as a Tool for Interrogating Multielectrode Arrays”, Pittcon 2003, Orlando, Florida, March, 2003.
“Scanning Electrochemical Microscopy as a Tool for Interrogating Multielectrode Arrays”, 225th ACS National Meeting, New Orleans, LA, March, 2003.
“Application of Scanning Electrochemical Microscopy in Microelectrode Array Development”, University of Georgia, September, 2003.
“Scanning Electrochemical Microscopy Investigations of Ultramicroelecrode Arrays”, Rensselaer Polytechnic Institute, December, 2003.
“Scanning Electrochemical Investigations of Addressable Ultramicroelectrode Arrays”, 205th Meeting of the Electrochemical Society, San Antonio, Texas, June, 2004.
“Scanning Electrochemical Microscopy: Electrodes of Finite Conical Geometry”, Scanning Electrochemical Microscopy Workshop, Dublin, Ireland, June, 2004.
“Probing Addressable Ultramicroelectrode Arrays with Scanning Electrochemical Microscopy”, Bowling Green State University, January, 2005
“Probing Addressable Ultramicroelectrode Arrays with Scanning Electrochemical Microscopy”, North Dakota State University, January, 2005
“Probing Addressable Ultramicroelectrode Arrays with Scanning Electrochemical Microscopy”, Illinois Institute of Technology, February, 2005
“Probing Addressable Ultramicroelectrode Arrays with Scanning Electrochemical Microscopy”, New Mexico State University, January, 2005
“Detection of Cation Transport Across a Single Nanopore with Scanning Electrochemical Microscopy”, Pittcon, 2005.
“Scanning Electrochemical Microscopy: Investigations on the Micro- and Nanoscale”, NM EPSCoR Annual State Conference”, November, 2005.
“Nanoelectrochemistry”, NM EPSCORE Meeting, Seviletta, NM, March 2006.
“Chemical Sensing with Scanning Electrochemical Microscopy”, Biosensors and Biosensor Network Symposium, Wichita State University, July, 2006.
“Investigation of Ion Transport in PEDOT Films by Scanning Electrochemical Microscopy” 4th International SECM Workshop, Italy, September, 2006.
“Scanning Electrochemical Microscopy (SECM): Probing Ion Transport in Conducting Polymers”, Texas Tech University, November, 2006.
“Probing Addressable Nanoelectrode Ensembles by Scanning Electrochemical Microscopy”, Pittcon 2007, Chicago, IL, February 2007.
“Probing Addressable Nanoelectrode Ensembles by Scanning Electrochemical Microscopy”, University of Texas at El Paso, March, 2007.
“Addressable Nanoelectrode Membrane Arrays: Scanning Electrochemical Microscopy (SECM) Characterization and Applications in Electrocatalysis”, ECS Symposium “Electrochemical Scanning Probe Microscopy – From Theory to Real- World Applications”, 212th Electrochemical Society (ECS) Washington, October 7 - 12, 2007.
“SECM Activity Screening and Electrochemical Characterization of Metal-Metal Oxide Oxygen Catalysts”, ECS Symposium “Electrochemical Scanning Probe Microscopy – From Theory to Real- World Applications”, 212th Electrochemical Society (ECS) Washington, October 7 - 12, 2007.
Invited Speaker in Symposium “New Frontiers in Electrochemistry”, 2007 Southwest Regional
Meeting of the American Chemical Society, Lubbock, TX, November 4-7, 2007.
Invited Speaker in Symposium “New Strategies in Designing Fuel Cell Catalysts”, Pittcon 2008, New Orleans, LA