David A Cullen Senior R&D Staff Contact CULLENDA@ORNL.GOV All Publications Super-Stable, Highly Monodisperse Plasmonic Nanocrystals with 500 Gold Atoms: Au~500(SR)~120 ... Ozonated Graphene Oxide Film as a Proton Exchange Membrane Platinum-Coated Nickel Nanowires as Oxygen-Reducing Electrocatalysts Imaging and microanalysis of thin ionomer layers by scanning transmission electron microscopy XPS and STEM Study of the Interface Formation between Ultra-Thin Ru and Ir OER Catalyst Layers and Perylene Red Support Whisk... The Chemical Behavior and Degradation Mitigation Effect of Cerium Oxide Nanoparticles in Perfluorosulfonic Acid Polymer Elect... Evaluation of the effect of impregnated platinum on PFSA degradation for PEM fuel cells. Composition-Mediated Order-Disorder Transformation in FePt Nanoparticles The Degradation Mitigation Effect of Cerium Oxide in Polymer Electrolyte Membranes in Extended Fuel Cell Durability Tests Electroluminescence and Transmission Electron Microscopy Characterization of Reverse-Biased AlGaN/GaN Devices Ternary Electrocatalysts for Oxidizing Ethanol to Carbon Dioxide: Making Ir Capable of Splitting C-C bond Efficient Oxygen Evolution Reaction Catalysts for Cell Reversal and Start/Stop Tolerance in Fuel Cells A Materials-Based Mitigation Strategy for SU/SD in PEM Fuel Cells: Properties and Performance-Specific Testing of IrRu OER Ca... Evaluation of Al3Mg2 precipitates and Mn-rich phase in aluminum-magnesium alloy based on scanning transmission electron microscopy imaging Fuel Cells Catalyst for Start-up and Shutdown Conditions: Electrochemical, XPS, and TEM Evaluation of Sputter-Deposited Ru, I... Transmission electron microscopy characterization of electrically stressed AlGaN/GaN high electron mobility transistor devices Layered YSZ/SCSZ/YSZ Electrolytes for Intermediate Temperature SOFC Part I: Design and Manufacturing... Utility of Hitachi ‘ZONE’ UV cleaning system for mitigating contamination effects in STEM imaging ... Covalently bonded three-dimensional carbon nanotube solids via boron induced nanojunctions Characterization of durable nanostructured thin film catalysts tested under transient conditions using analytical aberration-corrected electron microscopy Transmission Electron Microscopy Study of Iron Oxide Poisoning in Fluid Catalytic Cracking Catalysts Analytical aberration-corrected electron microscopy study of the effects of transient operation on the stability of nanostruc... Pagination First page « First Previous page ‹‹ … Page 10 Page 11 Current page 12 Key Links Curriculum Vitae Google Scholar ORCID Organizations Physical Sciences Directorate User Facilities Center for Nanophase Materials Sciences Nanomaterials Characterization Section electron Microscopy and Microanalysis Group