Optical nanomanipulation, Ultrafast Photophysics and Photochemical Phenomena
Selected Publications
Real-Time Observation of Ultrafast Intraband Relaxation and Exciton Multiplication in PbS Quantum Dots A. O. El-Ballouli et al. ACS Photonics, 1, 285, (2014)
Generation of multiple excitons in Ag2S quantum dots: single high-energy versus Multiple-Photon Excitation J. Sun et al. J. Phys. Chem. Lett., 5, 659, (2014)
Femtosecond Pulse-Width Dependent Trapping and Directional Ejection Dynamics of Dielectric Nanoparticles W.-Y. Chiang et al. J. Phys. Chem. C., 117, 19182, (2013)
Optical Trapping of Nanoparticles by Ultrashort Laser Pulses A. Usman et al. Science Progress, 96, 1, (2013)
Spectro-Temporal Characterization of the Photoactivation Mechanism of Two New Oxidized Cryptochrome/Photolyase Photoreceptors J. Brazard et al. J Am. Chem. Soc., 132, 4935, (2010)
Characterization of two members of the cryptochrome/photolyase family from Ostreococcus tauri provides insights into the origin and evolution of cryptochromes M. Heijde et al. Plant, Cell & environment, 44, 1614, (2010)
Trans-cis photoisomerization of a photoactive yellow protein model chromophore in crystalline phase A. Usman et al. J. Phys. Chem. B, 110, 20085, (2006)
Magneto−Structural Correlations: Synthesis of a Family of End-On Azido-Bridged Manganese(II) Dinuclear Compounds with S = 5 Spin Ground State T. K. Karmakar et al. Inorg. Chem. 44, 2391, (2005)
Structural evolution of the chromophore in the primary stages of trans/cis isomerization in photoactive yellow protein K. Heyne et al. J Am. Chem. Soc., 127, 18100, (2005)
The 143 and 300 K polymorphs of hexamethylenetetraminium 2, 4-dinitrophenolate monohydrate A. Usman et al. Acta Cryst. C, 57, 1443, (2001)
Education
PhD, Tohoku University, Japan, 2000
Professional Profile
Professional Profile
2013–present: Research Technical Specialist, KAUST, Saudi Arabia
2009-2013: Postdoctoral Fellow, National Chiao Tung University,Taiwan
2007-2008: Postdoctoral Fellow, EcoleNormaleSuperieure de Chimie, France
2005-2007: Postdoctoral Fellow, Osaka University, Japan
2003-2005: Postdoctoral Fellow, Max Born Institute, Berlin, Germany
2001-2003: Postdoctoral Fellow, University of Science, Malaysia
KAUST Affiliations
● Solar & Photovoltaics Engineering Research Center (SPERC)
● Division of Physical Sciences and Engineering (PSE)