Alla ZelenyukSenior Research Scientist, Fundamental and Computational Sciences Directorate, Chemical and Material Sciences Division, Chemical Structure and Dynamics
FCSD Staff Information page for Alla Zelenyuk
http://emslbios.pnl.gov/id/zelenyuk_an Updated: November 30, 2007
Current Activities and Projects
Our research is focused on the development and applications of the unique tools to study the fundamental processes that govern the chemistry and microphysics of particles on the nano and micro scales. At the center of our research program is an instrumentation system designed to measure the transformations of individual size-selected nanoparticles in real-time. Combining the aerosol flow reactor with differential mobility analyzers and Single Particle Laser Ablation Time-of-flight Mass Spectrometer enables unprecedented detailed studies of particle properties and processes. In this field, properties are a strong function of size, shape and composition. We are developing tools to simultaneously monitor changes in size, shape, density, fractal dimension, optical properties, and fluorescence spectra of each individual particle.
To take full advantage of the vast amounts of detailed data that this system produces, we have developed a data mining and visualization software that we call. It allows for data exploration on a multitude of levels ranging from individual particles to classes representing millions of particles by clicking a mouse on the hierarchical tree.
This hardware-software system makes it possible to characterize properties of atmospheric particles, diesel emission particulate, biospores, nanoparticles in extremely metastable states, core-shell nanoparticles, and particles generated by spray pyrolysis and flames.
Real-time multidimensional characterization of individual aerosol particles, environmental and health impact of aerosols, physical and chemical transformations of size-selected nanoparticles.
2001-2003 Assistant Chemist, Atmospheric Sciences Division, Environmental Sciences Department, Brookhaven National Laboratory, Upton, NY
1998-2001 Research Associate, Atmospheric Sciences Division, Environmental Sciences Department, Brookhaven National Laboratory, Upton, NY
1995-1998 Postdoctoral Research Associate, Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC
1994 Research Scientist, Laboratory of Liquid Phase and Interphase Processes, Semenov Institute of Chemical Physics, Moscow, Russia.
1988-1994 Research Assistant, Laboratory of Liquid Phase and Interphase Processes Semenov Institute of Chemical Physics, Moscow, Russia
Ph.D. in Chemical Physics, including Chemistry and Physics of Combustion, Moscow Institute of Physics and Technology, 1994
Diploma of Research Physicist, Moscow Institute of Physics and Technology, 1994
M.S. in Applied Physics and Mathematics, Moscow Institute of Physics and Technology (Graduated with honors), 1991