Education:

Master’s Degree in Physics, University of Illinois at Chicago (2001)

Master’s Degree   Higher Machine-Electrical Institute “Lenin”, Sofia, Bulgaria(1989)

Thesis:  “Surface Oxidation of Impurities in C-MOS Integrated Circuits.” 

Bachelor’s Degree in Physics and Mathematics  Plovdiv  University “Paisii Hilendarski”, Bulgaria

Teaching certificate for Physics and Mathematics

Teaching:

College of DuPage ( 2001-Present )

Physics,

Mecomtronics,

Electronics.             

Technical Expertise:

Argonne National Laboratory Materials Science Division-Scientific Assistant  (1998-2004)           

Magneto-optical imaging of superconductors and magnets.

Technologist-Department of Semiconductor Structures, Autoelectronics , Plovdiv, Bulgaria. 1987-1992

Thermal oxidation,

Vacuum methods of thin film deposition,

Photolithography,

Preparation of single crystals of metals, superconductors, magnets

Magnetic field  imaging

Transmission Electron Microscopy (TEM):

JEOL JEM-100CX, 2010F TEM/STEM,JEOL 3010

High resolution TEM imaging

TEM specimen preparation

In-situ heating and cooling techniques using hot and cold stages

Scanning Transmission Electron Microscopy (STEM)

Characterization of II-VI and III-V self-assembled quantum dot structures

Quantum dot shape and size determination using strain free technique

Number density determination

Compositional ordering in single and multi-sheet quantum dot heterostructures

EELS energy loss spectroscopy

Z-contrast imaging technique

Publications:

Magnetization and magnetic levitation of ring samples of melt-textured YBCO, H. Zheng, M. Jiang, R. Nikolova, V. Vlasko-Vlasov, U. Welp, B. W. Veal, G. W. Crabtree, H. Claus, Physica C 309 (1998) 17-24

High critical current “weld” joints in textured YBCO, H.Zheng, M.Jiang, R. Nikolova, U.Welp, A. P. Paulikas, Yi Huang, G. W. Crabtree, B. W. Veal, H. Claus, Physica C 322 ( 1999) 1-8

Top Seeded Growth and Joining of Bulk YBCO, H. Zheng, B. W. Veal, A. Paulikas, R. Nikolova, U. Welp, H. Claus, and G. W. Crabtree, Inst. Phys. Conf. Ser. 167, 51 (1999), paper presented at Applied Superconductivity, Spain, 14-17 September 1999

Contactless Characterization of Melt-Textured Superconducting Junctions Using Micro Hall Sensor Arrays, G. Karapetrov, V. Cambel, W. K. Kwok, R. Nikolova, G. W. Crabtree, Jounal of Applied Physics v.86, p.6282 (1999)

Characterization of Melt-Textured Superconducting Junction using Micro-Hall Sensor Arrays,
report at the 22nd International Conference on Low Temperature Physics ( Helsinki, Finland),
Physica B v.284-288, p.2065 (2000)

Oxygen doping of grain boundaries in YBa2Cu3Ox bicrystal films
H. Claus,  Beihai Ma,  A.P.Paulikas,  Y. Tang,  R. Nikolova,  B.W.Veal and K.E.Gray
Work supported by U.S. DOE, Basic Energy Sciences under Contract #W-31-109-ENG-3
Published in Proceedings of the Sixth European Conference on Applied Superconductivity, Sorrento, Italy, September 14-18 2003

Critical current of grain boundaries in  YBa2Cu3Ox bicrystal films as a function of oxygen concentration
H. Claus,  Beihai Ma,  A.P.Paulikas,  R. Nikolova,  B.W.Veal, Q.X.Jia,  U. Welp and K.E.Gray
Physical Review B 76, 014529 (2007)

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