Yuri Gartstein

Associate Professor - Physics
yxg037000@utdallas.edu
972-883-2834
PHY1708
Tags: Physics

Professional Preparation

Ph.D. - Physics
USSR Academy of Sciences, Institute for Spectroscopy - 1988
Qualification of Engineer - Physics
Tashkent Polytechnic Institute - 1982

Research Areas

Research Interests

Yuri Gartstein's research interests cover various aspects of theory and modeling of electronic, optical, transport and mechanical properties of novel and synthetic materials and structures, such as carbon nanotubes, organic solids, conjugated polymers, disordered molecular systems and unconventional superconductors. He is also interested in physics of devices on the basis of such materials, examples being organic light emitting diodes, solar cells and electromechanical actuators. A more recent addition to his interests is left-handed (negative refraction) materials.

Among Yuri Gartstein's representative contributions are the work done in collaboration with M.J. Rice and E.M. Conwell on excitons, optical absorption and charge separation in conjugated polymers and on Monte Carlo simulations of high-field hopping transport and charge carrier injection in molecular systems that have been featured in the last edition of M. Pope's and C. Swenberg's monograph "Electronic Processes in Organic Crystals and Polymers."

researchimage,Dr.Gartstein

As a result of collaboration with scientists of UTD-NanoTech Institute, Yuri Gartstein's recent research has been geared towards physics of carbon nanotubes, which is exemplified here with the theory of electro-mechanical actuation in single-wall carbon nanotubes. Our study of charge-induced deformations of carbon nanotubes showed that deformations are anisotropic and strongly depend on the nanotube geometry, the latter represented in the illustrative figure by difference (N-M) of nanotube indices on the x-axis. The upper panel of the figure displays changes in the nanotube length per doping level, the middle panel shows changes in the nanotube radius, and the lower panel shows torsional shear. The conceptual insight achieved in our analytical analysis has been later confirmed by full-blown ab-initio calculations. As is transparent from the picture, the model predicted a much stronger longitudinal response for nanotubes of certain geometries (especially so called zig-zag tubes) making them potentially attractive candidates for (nano) actuators. At the same time, the model explains why enhanced actuation cannot be utilized until efficient separation of nanotubes of different geometries becomes experimentally feasible in the currently available bundles of nanotubes, the effect is averaged out.

Publications

Yu.N. Gartstein, Charges on semiconducting nanotubes in polar media: polarons and excitons, Phys. Lett. A 349 (2006) 377. 2006 - Publication
V.M. Agranovich, Yu.N. Gartstein, and A.A. Zakhidov, Negative refraction in gyrotropic media, Phys. Rev. B 73 (2006) 045114. 2006 - Publication
M.J. Rice and Yu.N. Gartstein, \Excitonic ground state of the half-filled Peierls insulator, J. Phys.: Condens. Matter 17 (2005) 4615. 2005 - Publication
Yu.N.Gartstein, Simple empirical model for vibrational spectra of single-wall carbon nanotubes, cond-matt/0402286 (2004). 2004 - Publication
Yu.N. Gartstein, Vibrations of single-wall carbon nanotubes: lattice models and lowfrequency dispersion, Phys. Lett. A327 (2004) 83. 2004 - Publication
M.J. Rice and Yu.N. Gartstein, Excitonic insulator transition in the conjugated polymer polyacene, Synth. Metals 141 (2004) 11. 2004 - Publication
Yu.N. Gartstein, A.A. Zakhidov, and R.H. Baughman, Mechanical and electromechanical coupling in carbon nanotube distortions, Phys. Rev. B68 (2003) 115415. 2003 - Publication
Yu.N. Gartstein, A.A. Zakhidov, and R.H. Baughman, Charge induced anisotropic distortions of semiconducting and metallic carbon nanotubes, Phys. Rev. Letters 89 (2002) 045503. 2002 - Publication
Yu.N. Gartstein and J.G. Shaw, Many-particle effects in traveling electrostatic wave transport, J. Phys. D: Appl. Phys., 32 (1999) 2176. 1999 - Publication
Yu.N. Gartstein and P.S. Ramesh, Self-sustained oscillations and chaos in space charge limited currents, Phys. Rev. E60 (1999) 1069. 1999 - Publication

Appointments

Associate Professor
The University of Texas at Dallas [2003–Present]
Consultant
DARPA-sponsored project \Multifunctional Carbon Nanotube ChargeTransfer Composites [2000–Present]
Member of the Research and Technology Staff
Xerox Wilson Center for Research and Technology, Webster, NY [1996–2003]
Postdoctoral fellow
University of Rochester, Rochester, NY [1993–1996]
Chemistry Department
Visiting scientist
Xerox Wilson Center for Research and Technology, Webster, NY [1993–1996]
Visiting scientist
Russian Academy of Sciences, Troitsk - Moscow [1991–1992]
Research physicist
Uzbekistan Academy of Sciences [1988–1996]
Research physicist
Uzbekistan Academy of Sciences [1984–1988]
Engineer
Uzbekistan Academy of Sciences [1982–1984]

Additional Information

References
Academic
  • Prof. V.M. Agranovich, Institute for Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow region, 142092, Russia; Currently at the following address: UTD NanoTech Institute, University of Texas at Dallas, Richardson, TX 75083; Ph. (972)
  • 883-6545; E-mail: vladimir.agranovich@utdallas.edu
  • Prof. E.M. Conwell, 200 Hutchison Hall, Chemistry Department, University of Rochester, Rochester, NY 14627; Ph. (585) 275-5841; E-mail: conwell@chem.chem.rochester.edu
  • Prof. M. Pope, Department of Chemistry, New York University, Brown, 29 Wash Pl,453A, New York, NY 10003; Ph. (212) 998-8414; E-mail: mp3@nyu.edu
  • Prof. H. Baessler, Inst. f. Physik. Chemie, Kern- und Makromolek. Chemie Hans-Meerwein-Str., D-35032 Marburg, Germany; Ph: +49-6421-28-22190; Email: baessler@mailer.uni-marburg.de
  • Prof. A.A. Zakhidov, UTD NanoTech Institute, University of Texas at Dallas, Richardson, TX 75083, USA; Ph. (972) 883-6218; E-mail: Anvar.Zakhidov@utdallas.edu

Industrial
  • Dr. M.S. Jackson, 0147{59B, Xerox Wilson Center for Research and Technology,Webster, NY 14580; Ph. (716) 422{4893; E-mail:mjackson@crt.xerox.com; mjackson@wrc.xerox.com
Recent organizational work
  • Chairman, Local Org. Committee, International Conference on Photonic, Excitonic, Spintronic Processes in Nanostructures, UTD, January 22-24, 2004.
  • Member of Organizing Committee, US-Mexico Workshop Nanoscience for Advanced Applications: on Crossroads of Disciplines", Guanajuato, Mexico, February 16-19, 2005
  • Member of Organizing Committee, 2nd US-Mexico Workshop Nanoscience for Advanced Applications: on Crossroads of Disciplines to be held at UTD in 2007
  • Organizer, UTD Department of Physics Colloquium
Research and Technology work at Xerox
  • System-level and microscopic modeling of complex xerographic systems and subsystems
  • Manipulation of microscopic charged particles, including theory of space charge limitedcurrents in ballistic systems and theory of traveling wave transport of charged particle
  • Image quality, including color modeling
  • Modeling and implementation of lean manufacturing in printing industry, including combinatorial optimization and Web-enabled modeling