Tuesday, October 9, 2001 - 6:00 PM

 

Speaker: Michael Paukshto, Optiva, Inc., South San Francisco, CA

Abstract. New thin-film polarizers have been developed for optical applications.  The polarization technology is based on liquid crystalline material built from dichroic dyes that can be deposited on virtually any substrate.  Theoretical calculations and experimental results on viewing angle characterization of conventional O-type polarizers and new E-type polarizers are presented. At large viewing angles, the E-type polarizers demonstrate lower light leakage, higher contrast ratio and higher efficiency.  Spectral performance depends on the composition of the dye mixture that is used to produce the polarizer coating.  The new polarizers exhibit enhanced viewing angle and more design flexibility, providing new opportunities for the liquid crystal display industry. The results of the modeling and optimization of a 90o TN LCD using Optiva thin-film E-polarizer material reveal remarkable viewing angle and chromaticity characteristics. Measured data demonstrates good agreement with the simulations done by L. Silverstein.



Speaker Biography: 

Michael V. Paukshto received Ph. D. and Dr. Sci. from St.Petersburg State
University. From 1981 to 1994 he served as a Staff Senior Scientist at Smirnov Institute of Mathematics and Mechanics at St.-Petersburg State University. From 1994 to 1998 he is a Professor at St.-Petersburg University, as well as a Visiting Research Scientist at Institute for Mechanics and Materials at the University of California at San Diego. Since 1998, he is a Senior Scientist at Optiva, Inc. at South San Francisco.

Successfully completed research projects in the areas of optics of LCD, fiber optics, liquid film coating, tissue characterization by small-angle x-rays scattering, Cosserat spectrum theory, structural plasticity and fracture mechanics, molecular dynamics, atomic force microscopy, non-stationary nonlinear thermal-diffusion.

Author or co-author of five books and over 100 other scientific publications.



Post-Seminar Dinner: The seminar is free. Please join our speaker for dinner ($10-20) afterwards. Directions to the restaurant will be handed out at the seminar.

This is just off of De Anza Blvd. just south of 280 and a few miles north of 85. Head east on Mariani Ave. and take a left at the end of Mariani Ave. Entrance to Infinite Loop 4 is on the east side of Apple campus.

For additional information contact Mark Flynn @ 408-432-7914 or webmaster@ba-sid.org.