Contact information: Lawrence Livermore National Laboratory 7000 East Avenue, L-413 Livermore, CA 94550 email: choi12@llnl.gov phone: 925-423-5801 fax: 925-422-6594

Education:

• Ph.D. in Physics, Seoul National University, 2008
• M.S. in Physics, Seoul National University, 2003
• B.S. in Physics Education, Seoul National University, 2001

Research:

My research involves following topics.

• Solid-liquid interfaces
• Hydrogen evolution reaction
• Theoretical X-ray absorption/emission spectroscopy

Selected publications:

• B. C. Wood, E. Schwegler, W. I. Choi, T. Ogitsu, Surface Chemistry of GaP(001) and InP(001) in Contact with Water, J. Phys. Chem. C 118, 1062-1070 (2014)
• W. I. Choi, B. Wood, E. Schwegler, T. Ogitsu,  Site-Dependent Free Energy Barrier for Proton Reduction on MoS2 Edge, J. Phys. Chem. C 117, 21772-21777 (2013)
• B. C. Wood, E. Schwegler, W. I. Choi, T. Ogitsu, Hydrogen-Bond Dynamics of Water at the Interface with InP/GaP(001) and the imlications for Photoelectrochemistry,  J. Am. Chem. Soc. 135, 15774-15783 (2013)
• W. I. Choi, K. Kim, S. Narumanchi, Thermal Conductance at atomically clean and disordered Silicon/Aluminum interfaces: A Molecular Dynamics Simulation Study, J. Appl. Phys. 112, 054305 (2012)
• W. I. Choi, S.-H. Jhi, K. Kim, Y.-H. Kim, Divacancy-Nitrogen-Assisted Transition Metal Dispersion and Hydrogen Adsorption in Defective Graphenes: A First-Principles Study, Phys. Rev. B 81, 085441 (2010)
• W. I. Choi, J. Ihm, G. Kim, Modification of the electronic structure in a carbon nanotube with the charge dopant encapsulation, Appl. Phys. Lett. 92, 193110 (2008)
• S. H. Kim, W. I. Choi, G. Kim, Y. J. Song, G.-H. Jeong, R. Hatakeyama, J. Ihm, Y. Kuk, Cesium-Filled Single Wall Carbon Nanotubes as Conducting Nanowires: Scanning Tunneling Spectroscopy Study, Phys. Rev. Lett. 99, 256407 (2007)
• H. Lee, W. I. Choi, J. Ihm, Combinatorial Search for Optimal Hydrogen-Storage Nanomaterials Based on Polymers, Phys. Rev. Lett. 97, 056104 (2006)
• W. I. Choi, S. Park, T.-E. Kim, N. Park, K.-R. Lee, Y. H. Lee, J. Ihm, S. Han, Band-gap sensitive adsorption of fluorine molecule on sidewall of carbon nanotube; an Ab-initio study, Nanotechnology 17, 5862 (2006)
• W. I. Choi, G. Kim, S. Han, J. Ihm, Reduction of activation energy barriers of Stone-Wales transformation in endohedral metallofullerenes, Phys. Rev. B 73, 113406 (2006)