Janusz Parka

Biographie :

Janusz Parka, Ph. D., D. Sc., Eng, Full Professor
Institute of Applied Physics, Department of Advanced Technology and Chemistry, Military Academy of Technology, Head of Photorefractive LC and Metamaterials Group, Warsaw, Poland.

MS, Engineer (Physicist), 1977; PhD, 1983; DSc, 2001; Prof., 2003 present.

Institute of Applied Physics, Military University of Technology Physics, Assistant, Adjunct, Full Professor (1977 present). 
And at the same time Professor in Institute of Optoelectronics and Microelectronics, Department of Electronics and Information Technology Warsaw University of Technology (2002-2019).

Member of Scientific Councils in Department of Electronics and Information Technology (2003 2019). 
Member of Scientific Council of Department of Chemistry and Advanced Technology Military University of Technology. 
Head of Electrooptic Liquid Crystal an Metamaterials Group. 

Author and co-author of nearly 140 scientific papers. 
Promotor of 7 PhD Thesis. 
Studies of electrooptical effects in liquid crystals, specially color effects in liquid crystals  guest host system with azo and anthraquinone dyes, properties and other physical phenomena of Twisted and Supertwisted, Chiral Nematics, technological problems with orientation and surface processes for display applications. The effects of main interest: optical and nonlinear phenomena in doped liquid crystals, photorefraction processes in thin liquid crystal layers, reorientation of LC molecules by light, dynamic holography, optical data storage and information processing. Optical recording of polarization grating recording in chiral nematics and smectics. 

Author and co-author of 140 papers, two books, co-owner of 8 patents  devoted to liquid crystals. For 14-year investigator of metamaterials, tunable transducers with liquid crystals, tunable hyperbolic metastuctures. Applications of metamaterials for photonic devices like tunable phase shifters, antenna and multiband filters.

Titre provisoire de la communication : 
Liquid crystals in THz range - properties and applications