“Sensor Technologies for Biothreat Agents,” New Jersey Technology Council, Princeton, NJ. April 25, 2006.

“Detection of Femtogram Concentrations of Proteins and Pathogens”, invited seminar at Department of Chemical Engineering, Columbia University, New York, NY. October 18, 2005.

“Detection of Ultra Low Concentrations of Proteins and Pathogens ,” Invited talk at Research Retreat organized by AJ Drexel Protein Institute of Pure and Applied Protein Science, DU College of Medicine, June 2, 2005, Philadelphia.

“Piezoelectric-Excited Millimeter-Sized Cantilever Sensors for Pathogens and Proteins in Flow Cells,” invited speaker at the 2nd Nanomechanics Workshop, Organized by ASME Nanotechnology Institute, May 15-18, 2005, Knoxville, TN.

“In situ measurement of Ultra Low concentrations of pathogens and proteins,” invited seminar, April 21, 2005, Oak Ridge National Lab, Knoxville,TN.

“Fiber optic and Cantilever sensors for E coli 0157:H7 detection,” seminar at USDA Regional Research Labs, Wyndmoor, PA, March 2005.

“Detection of Ultra Low Concentrations of Proteins and Pathogens”, invited seminar at Department of Chemical Engineering, Lehigh University, Bethlehem, PA. November 17, 2004.

“Influence of Gas-Liquid Interface in Mammalian Cell Bioreactors,” Seminar at Centacor, March 2004.

“Strategies for improving bioreactor productivity,” Seminar at Schering-Plough, May 2001.

"Curricular Reforms: Drexel's Case Study,” Invited Speaker, Workshop on Engineering Curriculum Innovations, Carnegie Mellon University, Pittsburgh, July 1997.

"Shear-Fragility of Mammalian Cells: Problems and Solutions,” Keynote Address, 7th International Biotechnology Conference, Mazatlan, Mexico, September, 1997.

"Mechanism of Gas-Liquid Interface Interaction with Cells in Culture,” University of Colorado, Boulder, CO, February 1995.

"Role of Plasma Membrane Fluidity on Cell Fragility,” University of Maryland (Baltimore County), MD, March 1996.

"Influence of Bioreactor Conditions on Cell Productivity,” Aberdeen Proving Grounds, 1996.

“Factors Governing Monoclonal Antibody Productivity,” Smith, Kline and Beechum, August, 1995.

"Cultivation of Yeast Based on Intracellular Properties,” University of Maryland (College Park), MD, September 1995

"Strategies for Large Scale Cultivation of Mammalian Cells,” University of Akron, Akron, Ohio, March 1995