Refined Kerr electrooptical fringe-pattern methods are used to study time and space variations in the electric field between the electrodes of parallel-plate capacitors filled with liquid nitrobenzene. Photographs of fringe-pattern data recorded during application of high direct (both positive and negative) and sinusoidal voltages, ranging in frequency from 40 to 200 Hz, are compiled to enable ...

Charge trapping/detrapping within thin solid films of the organic photoconductive materials Sudan I and Disperse Red I was investigated. Charge trapping took place under an external bias upon irradiation. Trapped charges could be stored for long times in the dark under open-circuit or short-circuit conditions and could be removed (detrapped) with irradiation at short-circuit. These substances s...

The advent of spintronics has resulted in the study and design of spin manipulated devices used as information processors, quantum computing elements, spinpolarized diodes, spin-valve read heads, and electrooptical modulators, to name just a few. The spin-orbit (SO) interaction, due to spatial asymmetry in zincblende lattices or sample design, doping profile or applied gate voltages, plays a fu...

A range of mesogenic molecules varying in both bend angle and strength of lateral dipole were synthesized, and their phase behavior was characterized by polarizing microscopy, thermal analysis, X-ray diffraction, and electrooptical measurements. We find the general destabilization of the liquid crystallinity caused by strong lateral dipolar groups and the bent molecular shape are off-set in mes...