Cornel Emil Tripa

Postdoctoral Research Associate

Materials Science Division; Bldg. 200
Argonne National Laboratory
9700 South Cass Ave.
Argonne, IL 60439

phone: 630-252-4657
fax: 630-252-9555
email: tripa@anl.gov

Present Position

Postdoctoral Research Associate
Enrico Fermi Institute
University of Chicago

Current Research Interest

Trace, elemental, and isotope distribution analysis of presolar interstellar grains, and molecular surface analysis, by Resonance and Single-photon Ionization Time-of-Flight Mass Spectrometry.

Education

• PhD Chemistry, 2000, University of Pittsburgh
  Dissertation: "Special Adsorption and Reaction Effects at Step Defect Sites on Pt Single Crystal Surfaces"
  Advisor: Prof. John T. Yates, Jr., Director of the Surface Science Center
• B.S. Chemistry, 1994, University of Bucharest, Romania

Research interest

• Investigation of surface chemistry on metal single crystal surfaces by photo- and thermochemistry, adsorption, desorption, reaction kinetics, selective and sequential occupation of active sites, isotope labeling, mimicking of heterogeneous catalysis on model catalyst.
• Structure of adsorbed species and reaction intermediates on well-defined single crystal surfaces.
• Single crystal surface preparation, cleaning, and characterization.
• Surface Science instrumentation and methods: Reflection-Absorption Infrared (RAIR) Spectroscopy, Mass Spectrometry, Auger Electron Spectroscopy (AES), Low-Energy Electron Diffraction (LEED).

Professional Affiliations

• American Chemical Society, 1999 - present
• American Vacuum Society, 1997 - present
• AWARDS: 1999 - Graduate Research Award (American Vacuum Society)
• 1991-94 - National Merit Scholarship, University of Bucharest, Romania
• 1988 - Silver Medal, 20th International Chemistry Olympiad, Finland
• 1988 - Gold Medal, 2nd Balkan Chemistry Olympiad, Bulgaria
• 1984-88 - Winner of several medals, National Chemistry Olympiad, Romania

Publications

• C.E. Tripa, T.S. Zubkov, and J.T. Yates, Jr., "N2 Chemisorption on Stepped Pt Surfaces - Control by 2-D and 1-D Precursor Behavior", J.
  Phys. Chem. B 105 (2001) 3724-32.
• T. S. Zubkov, C. E. Tripa, and J. T. Yates, Jr., "1-D Reversible Phase of Chemisorbed N2 on Stepped Pt Surfaces", J. Phys. Chem. B 105
  (2001) 3733-40.
• C.E. Tripa and J.T. Yates, Jr., "Surface-Aligned Photochemistry - Aiming Reactive Oxygen Atoms Along a Single Crystal Surface", J. Chem.
  Phys. 112 (2000) 2463-9.
• C.E. Tripa and J.T. Yates, Jr., "Surface-aligned Reaction of Photogenerated Oxygen Atoms with Carbon Monoxide Targets", Nature 398
  (1999) 591-3.
• C.E. Tripa, T.S. Zubkov, and J.T. Yates, Jr., M. Mavrikakis, and J.K.
  Norskov, "Molecular N2 Chemisorption - Specific Adsorption on Step
  Defect Sites on Pt Surfaces", J. Chem. Phys. 111 (1999) 8651-8.
• C.E. Tripa and J.T. Yates, Jr., "Step Defect Sites: The SitesResponsible for Molecular Nitrogen Chemisorption on Pt Surface", Rev.
  Roum. Chim. 44 (1999) 1035-9.
• C.R. Arumainayagam, C.E. Tripa, J. Xu, and J.T. Yates, Jr., "IR Spectroscopy of Adsorbed Dinitrogen: A Sensitive Probe of Defect Sites on Pt(111)", Surf. Sci. 360
  (1996) 121-7.
• C.E. Tripa, C.R. Arumainayagam, and J.T. Yates, Jr., "Kinetics Measurements of CO Photo-oxidation on Pt(111)", J. Chem. Phys. 105
  (1996) 1691-6.
• C.E. Tripa and J.T. Yates, Jr., "Surface Flatness of Polished Metal Single Crystals", J. Vac. Sci. Technol. A 14 (1996) 2544-6.
• C.E. Tripa and J.T. Yates, Jr., "Photochemistry of O2 on Stepped Pt Surfaces: Enhanced O2 Photodissociation at Step Sites", J. Chem. Phys.
  (accepted).
• B.V. King, M.R. Savina, C.E. Tripa, W.F. Calaway, I.V. Veryovkin, J.F. Moore, and M.J. Pellin, "Single Photon Ionisation of Self Assembled Monolayers", Proceedings of the 15th International Conference on Ion Beam Analysis, Cairns, Australia (submitted).

Papers Presented at Conferences

• C. E. Tripa and J. T. Yates, Jr., "Photodesorption and Photodissociation of O2 on Stepped Pt Surfaces", 44th Annual Symposium of the American Vacuum Society, 19-24 October 1997, San Jose, CA.

Invited Talks

• 18 June 1999 - Center for Atomic-scale Materials Physics (CAMP), Dept. of Physics, Technical University of Denmark, Lyngby, Denmark
• 16 June 1999 - Dept. of Physics, Prof. A.M. Lehmann's group, University of Heidelberg, Heidelberg, Germany
• 9 June 1999 - Dept. of Physics, University of Marburg, Marburg, Germany

Scientific Research Abroad

• 18 May - 7 July 1999: "Hyperpolarized 8Li-NMR on Stepped Ru(109) Surface" at Max Planck Institute for Nuclear Physics, Heidelberg, Germany (funded by NSF).