Dr. David B. Geohegan

David Geohegan is currently Leader of the Nanomaterials Synthesis and Functional Assembly Group at the Center for Nanophase Materials Sciences at Oak Ridge National Laboratory (ORNL). He obtained his Ph.D. in Physics from the University of Illinois at Urbana-Champaign in 1986 on laser spectroscopy of atoms and molecules related to excimer laser kinetics.

Research Interests

At ORNL, he has concentrated on understanding and controlling the synthesis of thin films and nanostructured materials through the development of time resolved laser spectroscopy and imaging diagnostic techniques. His research has more recently focused on carbon nanotube and nanohorn synthesis, purification, and processing into multifunctional materials. Basic science projects include studies of the fundamental growth mechanisms for nanomaterials, such as single-walled carbon nanotubes and nanohorns, nanoparticles, and nanowires as well as explorations of their functionality. His research utilizes lasers for synthesis, characterization, and processing of nanoscale materials which exhibit new nanoscale properties for use in hydrogen storage, solid state lighting, and other energy-related applications.

Professional and Synergistic Activities

2003–p            Adjunct Professor, University of Tennessee-Knoxville, Dept. of Materials Science and Engineering
2006–p            Co-Chair, SPIE Photonics West Conference “Synthesis and Photonics of Nanoscale Materials”
2009–p            Committee, Guadalupe Workshop, “Nucleation and Growth Mechanisms of Single-Wall Carbon Nanotubes”
2010; 2008     Co-Chair, Spring MRS Symposium, “Carbon Nanotubes and Related Nanomaterials”
2009               Co-Chair, DOE-BES Synthesis and Processing Science Contractor's Meeting
2007               Co-Chair, COLA 2007 9th International Conference on Laser Ablation
1997–1999     Editorial Board   Applied Physics Letters, Journal of Applied Physics

Reviewer  for various journals including Nano Letters, ACS Nano, Small, Journal of Physical Chemistry C, Applied Physics Letters, Journal of Applied Physics, Applied Physics A, Applied Physics B, Carbon, Journal of Nanophotonics. 

Member           American Physical Society, Materials Research Society

Honors and Awards
2011                Fellow, American Physical Society
2009                Distinguished Service Award, International Conference on Laser Ablation
1999                Lockheed Martin Technical Achievement Award for Sustained Research
1998; 1990     Lockheed Martin & Martin Marietta Technical Achievement Award
1983             Outstanding Graduate Assistant Award, Teaching, Physics Dept., UIUC

Selected Patents / Invention Disclosures (7 U.S. Patents issued, 15 Patent Applications Filed)
 “Transparent Conductive Nanorod Composites,” D. B. Geohegan, I. N. Ivanov, A. A. Puretzky, S. Jesse, and B. Hu, U.S. Patent No. 7,923,922 B2, Issued:  Apr. 12, 2011.
“Condensed Phase Conversion and Growth of Nanorods and Other Materials Instead of From Vapor,” D. B. Geohegan, R. D. Seals, A. A. Puretzky, and X. Fan, U.S. Patent No. 7,815,973 B2, Issued: Oct. 19, 2010.
 “Fabrication of High Thermal Conductivity Arrays of Carbon Nanotubes and Their Composites,” D. B. Geohegan, I. N. Ivanov, and A. A. Puretzky, U.S. Patent No. 7,763,353, Issued: Jul. 27, 2010.
 “SEM Technique for Imaging and Measuring Electronic Transport in Nanocomposites Based on Electric Field Induced Contrast,” S. Jesse, D. B. Geohegan, and M. A. Guillorn, U.S. Patent No. 7,491,934, Issued: Feb. 17, 2009.

Publications (Author of > 200 articles in refereed journals and books, h=40). Downloadable CV, selected PDFs and Google Scholar Page.

ORCID: 0000-0003-0273-3139

Researcher ID: D-3599-2013

Mailing Address:
Center for Nanophase Materials Sciences
Bldg. 8610, Room M-162
Oak Ridge National Laboratory
1 Bethel Valley Road
Oak Ridge, TN 37831-6488

Phone: (865) 742-8995
Email: odg@ornl.gov
Web: web.ornl.gov/~odg


Dec. 7, 2016 - Page is back up after a week or so. Sorry for the inconvenience. Update coming soon. DG