Alexander A Puretzky

Senior R&D Staff

Alexander Puretzky is currently a Senior R&D Staff member at the Center for Nanophase Materials Sciences (CNMS) in the Functional Hybrid Nanomaterials Group at Oak Ridge National Laboratory (ORNL). He received his Ph.D. in physics from the Institute of Spectroscopy at Moscow, Russia in 1977 on laser spectroscopy related to selective photoionization of atoms and photodissociation of molecules for laser isotope separation.At ORNL, he has focused on understanding the laser generated plasma plumes for controlled synthesis of thin films and nanomaterials and revealing their growth mechanisms using in situ time-resolved spectroscopic imaging and other real-time diagnostics techniques. His research has more recently concentrated on laser spectroscopy of nanomaterials including 2D materials, carbon nanotubes, nanoparticles, and nanowires. Basic science projects include investigations of the growth mechanisms of carbon nanotubes and nanohorns, graphene, and nanoparticles as well as modeling of their growth kinetics and studies of their functional properties. His research utilizes a wide variety of laser including nanosecond and femtosecond for synthesis, processing, and characterization of nanomaterials for use in hydrogen storage, solar cells, and other energy-related applications.Professional and Synergistic Activities2011 Session Chair, Nucleation & Growth Mechanisms of Single Wall Carbon Nanotubes, 2011 Guadalupe Workshop V, April 8-12, 20111995 –p Reviewer for Peer-Reviewed Journals: Physical Review Letters, Physical Review B, Applied Physics Letters, Carbon, and others.Member Materials Research Society


1999; 1998 Lockheed Martin Technical Achievement Award


Center for Nanophase Materials Sciences (CNMS)


1. “Luminescent Systems Based on the Isolation of Conjugated PI Systems and Edge Charge Compensation with Polar Molecules on a Charged Nanostructured Surface”, I.N. Ivanov, A.A. Puretzky, Bin Zhao, D. B. Geohegan, D. J. Styers-Barnett, Hui Hu, U.S. Patent No. 8,778,226 B2, Issued: July 15, 2014.
2. “Transparent Conductive Nano-Composites,” D. B. Geohegan, I. N. Ivanov, A.A. Puretzky, S. Jesse, B. Hu, M. Garrett, B. Zhao, U.S. Patent No. 7,923,922 B2, Issued: April 12, 2011.
3. “Condensed Phase Conversion and Growth of Nanorods and Other Materials Instead of From Vapor,” D. B. Geohegan, R. D. Seals, A. A. Puretzky, X. Fan, U.S. Patent No. 7,815,973 B2, Issued: Oct. 19, 2010.
4. “Fabrication of High Thermal Conductivity Arrays of Carbon Nanotubes and Their Composites,” D. B. Geohegan, I. N. Ivanov, A. A. Puretzky, U.S. Patent No. 7,763,353 B2, Issued: July 27, 2010.
5. “Patterned Two-Dimensional Heterocrystals”, D. B. Geohegan, M-W. Lin, M. Mahjouri-Samani, A. Puretzky, C. M. Rouleau, K. Wang, K. Xiao, 201503565, DOE S-138,201.