Hui Zhao Research Group

Brian Ruzicka

Ph.D.
Primary office:


  • Joined KU on Fall 2007
  • Graduated on Spring 2012 (Ph.D. with honors)
  • Current employment: Intel Corp.

Selected Publications

  1. Brian A. Ruzicka, Rui Wang, Jessica Lohrman, Shenqiang Ren, and Hui Zhao, Exciton diffusion in semiconducting single-walled carbon nanotubes studied by transient absorption microscopy, Physical Review B 86, 205417 (2012). [Full Text, copyright APS]
  2. Brian A. Ruzicka, Shuai Wang, Jianwei Liu, Kian-Ping Loh, Judy Z. Wu, and Hui Zhao,Spatially resolved pump-probe study of single-layer graphene produced by chemical vapor deposition [invited], Optics Materials Express 2, 708 (2012). [Full Text, copyright OSA]
  3. Brian A. Ruzicka, Lalani K. Werake, Guowei Xu, Jacob B. Khurgin, E. Ya. Sherman, Judy Z. Wu, and Hui Zhao, Second-harmonic generation induced by electric currents in GaAs, Physical Review Letters 108, 077403 (2012). [Full Text, copyright APS]
    Featured in Physics Today (Frequency-doubled photons can measure current density, March of 2012).
    Featured in Physics-Uspekhi (Vol. 55, Issue 4) as Physics News: Detection of electric currents in GaAs based on second-harmonic generation.
  4. Brian A. Ruzicka and Hui Zhao, Optical studies of ballistic currents in semiconductors [invited], Journal of the Optical Society of America B 29, A43 (2012). [Full Text, copyright OSA]
  5. Brian A. Ruzicka,N. Kumar, S. Wang, K.P. Loh, and Hui Zhao, Two-probe study of hot carriers in reduced graphene oxide, Journal of Applied Physics 109, 084322 (2011). [Full Text, copyright AIP]
  6. Brian A. Ruzicka, L.K. Werake, H. Samassekou, and Hui Zhao, Ambipolar diffusion of photo-excited carriers in bulk GaAs, Applied Physics Letters 97, 262119 (2010). [Full Text, copyright AIP]​
  7. Brian A. Ruzicka, S. Wang, L.K. Werake, B. Weintrub, K.P. Loh, and Hui Zhao, Hot carrier diffusion in graphenePhysical Review B 82, 195414 (2010). [Full Text, copyright APS]​
  8. Brian A. Ruzicka, L.K. Werake, Hui Zhao, S. Wang, and K.P. Loh, Femtosecond pump-probe studies of reduced graphene oxide thin films, Applied Physics Letters 96, 173106 (2010).[Full Text, copyright AIP]
  9. Brian A. Ruzicka and Hui Zhao, Power dependence of pure spin current injection by quantum interferencePhysical Review B 79, 155204 (2009).[full text, copyright APS]​
  10. Brian A. Ruzicka, K. Higley, L.K. Werake, and Hui Zhao, All-optical generation and detection of subpicosecond ac spin-current pulses in GaAsPhysical Review B 78, 045314 (2008).[full text, copyright APS]
    Selected as Editor's Suggestions
  11. Rui Wang, Brian A. Ruzicka, Nardeep Kumar, Matthew Z. Bellus, Hsin-Ying Chiu, and Hui Zhao, Ultrafast and spatially resolved studies of charge carriers in atomically-thin molybdenum disulfide, Physical Review B 86, 045406 (2012). [Full Text, copyright APS]
  12. Alec Kirkeminde, Brian A. Ruzicka, Rui Wang, Sarah Puna, Hui Zhao, and Shenqiang Ren, Synthesis and optoelectronic properties of two-dimensional FeS2 nanoplates, ACS Applied Materials & Interfaces 4, 1174 (2012). [Full Text, copyright ACS]
  13. N. Kumar, Brian A. Ruzicka, N.P. Butch, P. Syers, K. Kirshenbaum, J. Paglione,and Hui Zhao, Spatially resolved femtosecond pump-probe study of topological insulator Bi2Se3, Physical Review B 83, 235306 (2011). [Full Text, copyright APS]​
    Selected as Editor's Suggestions.​
  14. L.K. Werake, Brian A. Ruzicka,and Hui Zhao, Observation of intrinsic inverse spin Hall effect, Physical Review Letters,106, 107205 (2011). [Full Text, copyright APS]​
    Featured in Physical Review Focus (Electrons curve without help,02/25/2011) and MRS News.​
  15. E.J. Loren, Brian A. Ruzicka, L.K. Werake, Hui Zhao, H.M. van Driel, and A.L.Smirl, Optical injection and detection of ballistic pure spin currents in Ge, Applied Physics Letters 95, 092107 (2009).[full text, copyright AIP]​