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Curriculum Vitae

Current position

Postdoctoral fellow at the Center for Bio-inspired Energy Research (CBES) at Northwestern University, working in the research group of Prof. Emily Weiss., Evanston, IL (Sep. 2013 onwards).

Studying electronic ratcheting mechanisms, for improving energy conversion devices.

 

Education

  • Ph.D. in Chemistry (2013), Weizmann Institute of Science, Rehovot, Israel. Dissertation title: “Interaction of Localized Surface Plasmon Resonance Transducers with Dielectric and Fluorescent Materials”; Advisor: Prof. Israel Rubinstein
  • M.Sc. in Chemistry (2009), Weizmann Institute of Science, Rehovot, Israel. Dissertation title: “Distance Sensitivity in Localized Surface Plasmon Resonance (LSPR) Systems”; Advisor: Prof. Israel Rubinstein
    • Three-month rotations with:
      • Prof. Michael Bendikov - electrochromic conducting polymers
      • Prof. Leeor Kronik - density functional theory computations
      • Prof. Israel Rubinstein - coordination chemistry layer-by-layer assemblies, plasmonic transducers
  • B.Sc. in Chemistry, summa cum laude (2007), Tel Aviv University, Israel. Undergraduate research project: “Lithium cell electrode fabrication” (Prof. Emanuel Peled)

 

Journal publications

(Please see detailed descriptions of these studies in the "Plasmonics" and "Ratchets" sections)

  1. How to drive a flashing electron ratchet to maximize current, Ofer Kedem, Bryan Lau, and Emily A. Weiss, Nano Lett., 2017, 17, 5848–5854
  2. A Light-Responsive Organic Flashing Electron Ratchet. Ofer Kedem, Bryan Lau, Mark A. Ratner, and Emily A. Weiss. Proc. Natl. Acad. Sci. U.S.A., 2017, 114, 8698-8703
  3. Mechanisms of Symmetry Breaking in a Multidimensional Flashing Particle Ratchet. Ofer Kedem, Bryan Lau, and Emily A. Weiss. ACS Nano, 2017, 11, 7148–7155
  4. A Silicon Ratchet to Produce Power from Below-Bandgap Photons. Bryan Lau, Ofer Kedem, Mohamad Kodaimati, Mark A. Ratner, and Emily A. Weiss. Adv. Energy Mater., 2017, 7, 1701000
  5. An Introduction to Ratchets in Chemistry and Biology. Bryan Lau*, Ofer Kedem*, James Schwabacher, Daniel Kwasnieski and Emily A. Weiss. Mater. Horiz., 2017, 4, 310-318
     * - equal contribution
  6. Identification of Two Mechanisms for Current Production in a Biharmonic Flashing Electron Ratchet. Bryan Lau, Ofer Kedem, Mark A. Ratner, and Emily A. Weiss. Phys. Rev. E, 2016, 93, 062128
  7. Distance-Dependent Fluorescence of Tris(bipyridine)ruthenium(II) on Supported Plasmonic Gold Nanoparticle Ensembles. Ofer Kedem, Wendel Wohlleben, and Israel Rubinstein. Nanoscale2014, 6, 15134-15143
  8. Critical Issues in Localized Plasmon Sensing. Ofer Kedem, Alexander Vaskevich, and Israel Rubinstein. J. Phys. Chem. C, 2014, 118, 8227-8244. Invited Feature Article, featured on the cover
  9. Stabilization of Metal Nanoparticle Films on Glass Surfaces Using Ultrathin Silica Coating. Julia Chaikin, Ofer Kedem, Jennifer Raz, Alexander Vaskevich, and Israel Rubinstein. Anal. Chem., 2013, 85, 10022-10027
  10. Oscillatory Behavior of the Long-Range Response of Localized Surface Plasmon Resonance Transducers. Ofer Kedem, Takumi Sannomiya, Alexander Vaskevich, and Israel Rubinstein. J. Phys. Chem. C, 2012, 116, 26865–26873
  11. Comparative Assessment of the Sensitivity of Localized Surface Plasmon Resonance Transducers and Interference-Based Fabry-Pérot Transducers. Ofer Kedem, Alexander Vaskevich, and Israel Rubinstein, invited contribution to Special Issue: “Plasmonic Sensors”. Ann. Phys. (Berlin), 2012, 524, 713-722
  12. Improved Sensitivity of Localized Surface Plasmon Resonance Transducers Using Reflection Measurements. Ofer Kedem, Alexander Vaskevich, and Israel Rubinstein. J. Phys. Chem. Lett., 2011, 2, 1223–1226
  13. Sensitivity and Optimization of Localized Surface Plasmon Resonance Transducers. Ofer Kedem, Alexander B. Tesler, Alexander Vaskevich, and Israel Rubinstein. ACS Nano, 2011, 5, 748–760

 

Invited book chapter

  • Long Range Metal Enhanced Fluorescence. Ofer Kedem. In Surface Plasmon Enhanced, Coupled and Controlled Fluorescence, Ed: Chris D. Geddes, Wiley & Sons, 2017.

 

Dissertations

 

Selected posters

 (click the links for a PDF version)

  1. Electron Ratchets: Theory and Experiment. Ofer Kedem, Bryan Lau, Daniel Kwasnieski, Mark A. Ratner, and Emily A. Weiss. Science for Our Nation's Energy Future - 2017 EFRC-HUB-CMS PI MEETING, Washington, D.C. (July 2017).
  2. Distance Dependent Fluorescence Enhancement and Quenching of Tris(bipyridine)ruthenium(II) by Plasmonic Au Nanoparticle Arrays. Ofer Kedem, Wendel Wohlleben, and Israel Rubinstein. Israel Chemical Society 2013, Tel Aviv, Israel (February 2013).
  3. Optimization of Localized Surface Plasmon Resonance (LSPR) Transducers. Ofer Kedem, Alexander Vaskevich, and Israel Rubinstein. Materials Research Society Fall Meeting 2012, Boston, MA, USA (November 2012).
  4. Improved Sensitivity of Localized Surface Plasmon Resonance Transducers Using Reflection Measurements. Ofer Kedem, Alexander Vaskevich, and Israel Rubinstein. Nano Israel 2010, Jerusalem, Israel (November 2010).

 

Selected conference talks

  1. “Ratcheting of Photo-generated Carriers in an Organic Bulk-heterojunction”. EDISON20 - The 20th International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures, Buffalo, NY (Jul. 2017)
  2. “A Light-Responsive Organic Flashing Electron Ratchet”. Canadian Society for Chemistry 100th Meeting, Toronto (May 2017)
  3. “Ratcheting of Photo-generated Carriers in an Organic Bulk-heterojunction”. Israel Vacuum Society 34th Annual Conference, Beer-Sheva (Sep. 2016)
  4. “Electronic Ratcheting in an Organic Photovoltaic Material”. Israel Chemical Society 2015, Tel Aviv (Feb. 2015)
  5. “The Origin of Oscillations in the Long-range Response of Localized Surface Plasmon Resonance Transducers”. Materials Research Society Fall Meeting 2012, Boston, MA (Nov. 2012)
  6. “Distance Dependence in Localized Surface Plasmon Resonance Systems” (oral). JCF Frühjahrssymposium 2011, Erlangen, Germany (Mar. 2011)