Tolga Aytug

Senior Research Staff Member

(2007-Present) Research Staff Member: Oak Ridge National Laboratory, Oak Ridge, TN

(2007-Present)  Adjunct Professor: University of Tennessee, Dept. of Phys., Knoxville, TN                       

(2003-2007)      Research Assistant Professor: University of Tennessee, Dept. of Phys., Knoxville, TN                        

(2000-2003)      Post-doctoral Research Associate:  Oak Ridge National Laboratory, Oak Ridge, TN

(1999-2000)      Post-graduate Research Associate: Oak Ridge National Laboratory, Oak Ridge, TN

(1997-1999)      Research/Teaching Assistant: University of Kansas, Lawrence, KS

RESEARCH INTEREST and EXPERTISE
  • Epitaxial growth of thin film heterostructures using various techniques including dc and rf-magnetron sputtering, pulsed laser ablation, electron beam evaporation, metal organic chemical vapor deposition (MOCVD) and chemical solution (Metal Organic Decomposition and Sol-Gel) approaches
  • Epitaxial thin film multilayers of ferroelectric perovskites, magnetoresistive oxides, nitrides and metals on single crystals and textured metal substrates.
  • Processing strategies for insulating and conducting oxide and nitride thin films as buffer layers on biaxially textured Cu, Ni and Ni-alloy tapes
  • Synthesize and characterize properties of bulk and thin films of mercury-, thallium- and yttrium-based high temperature superconducting cuprates
  • Ion and neutron irradiation effects on the physical/chemical and microstructural properties of nanoparticle doped yttrium-based high temperature superconductors
  • Chemical synthesis approaches for the development of novel radiation resistant polymer-ceramic based nanocomposite dielectric materials for nuclear environments
  • Effects of gamma radiation on the mechanical and electrical properties of the composite polymer systems
  • Mechanisms of magnetic vortex phenomena in high-temperature superconducting films
  • Thermodynamic and kinetic effects on phase nucleation, structure formation and stability of oxide and nitride thin films
  • Relationships between film microstructure, defects, and diffusion properties on an atomic scale
  • Physical, chemical, and electrical properties of superconducting materials, oxide, nitride, metal and CMR thin films including electrical transport and magnetic properties
  • Synthesis of two-dimensional, self-organized arrays of various oxide and metal nanoparticles with controlled size, orientation, and concentration on technological substrates
  • Effects of nanoparticle surface engineering on flux-pinning properties of superconducting films
  • Synthesis and formation of chemically phase separated and structurally self-assembled composite structures in epitaxial thin films
  • Processing strategies for the fabrication and  electrical stabilization of high critical current density superconducting wires
  • Metallization layers, die-attach materials and assembly concepts for high temperature power electronics packaging
  • Design concepts and fabrication of integrated high temperature, high frequency thin film ceramic capacitors for power electronic modules
  • Synthesis and design of  window, absorber, and electrode layers for thin film based photovoltaics on glass and flexible  materials
  • Novel approaches for the development of transparent and non-transparent nanostructured superhydrophobic coatings
  • Process development/optimization of conductive interconnects based on nanoparticle inks for printed flexible electronics

Awards

(2015) R&D 100 Award for Multifunctional Superhydrophobic Transparent Glass Coating.
(2014) Research Accomplishment Award (ORNL). This represents the highest individual technical award for outstanding scientific accomplishment at ORNL
(2014) R&D 100 Award for The Super-hydro-tunable HiPAS Membranes
(2014) ORNL Significant Event Award for licensing of the technology on optically transparent nanostructured superhydrophobic coatings to United Protective Technologies
(2012) R&D 100 Award for Low-Cost Plasma Processing System for Research and Pilot Production
(2011) Southeast and National Federal Laboratory Consortia Award for excellence in technology transfer for flexible thin-film solar photovoltaics on RABiTS
(2010) R&D 100 Award for High-Performance, High-Tc Superconducting Wires Enabled via Self-Assembly of Non-Superconducting Columnar Defects
(2009) ORNL Significant Event Award for establishment of MOCVD capabilities at ORNL to produce high-performance superconductor films
(2008) ORNL Significant Event Award for development of IBAD based second generation superconducting wires
(2007) Southeast and (2008) National Federal Laboratory Consortia Award for excellence in technology transfer of LaMnO3 – buffers to fabricate high-performance, high-temperature superconducting tapes
(2007) R&D 100 Award for High-Performance LaMnO3-Enabled, High Temperature Superconducting Tape
(2006) Excellence in Technology Transfer Award, Oak Ridge National Laboratory. This is one of the highest technical awards given at ORNL
(2004) Exceptional Accomplishment, U.S.D.O.E. Superconductivity Program Peer Review
(1994-1998) Turkish higher education council fellowship. This is the highest level of fellowship awarded in Turkey for exceptional students to study abroad
American Chemical Society, Petroleum Research Grant (FY 2006-2008)

Patents

Inventor, “Superhydrophobic transparent glass (STG) thin film articles”, U.S. Patent No. 8,741,158; June 3, 2014
Inventor, “Hetero-junction photovoltaic device and method of fabricating the device”, U.S. Patent No. 8,647,915; Feb 11, 2014
Inventor, “Method for producing microstructured templates and their use in providing pinning enhancements in superconducting films deposited thereon”, U.S. Patent No. 8,486,864; July 16, 2013
Inventor, "Phase separated, epitaxial composite cap layers for electronic device applications, and method of making the same", U.S. Patent No. 8,221,909, July 17, 2012
Co-inventor, “Chemical Solution Deposition Method of Fabricating Highly Aligned MgO Templates”, U.S. Patent No. 8,088,503; Jan 3, 2012.
Co-inventor, “Chemical Solution Deposition Method of Fabricating Highly Aligned MgO Templates”, U.S. Patent No. 7,553,799 B2; June 30, 2009.
Co-inventor, “Superconductors on Iridium Substrates and Buffer Layers”, U.S. Patent No. 7,432,229 B2; October 7, 2008.
Co-inventor, “Method of Depositing an Electrically Conductive Oxide Buffer Layer on a Textured Substrate and Articles Formed There from,” U.S. Patent No. 6,956,012; October 18, 2005.
Co-inventor, “Buffer Layers and Articles for Electronic Devices,” U.S. Patent No. 6,764,770; July 20, 2004.
Co-inventor, “Method of Depositing an Electrically Conductive Oxide Buffer layer on a Textured Substrate and Articles Formed There from,” U.S. Patent No. 6,617,283 B2; September 9, 2003.

Specialized Equipment

X-ray diffraction: powder, texture and pole figure analysis Microscopy: SEM/EDAX, AFM, and Optical; Profilometry Spectroscopy: XAS, SAM, RBS, SIMS, and Optical (UV-Vis-NIR transmittance and reflectivity) Mechanical: Dynamic mechanical analysis, uniaxia...