Title :
Voltage control of molecular diffusion through novel liquid crystalline membranes
Author :
Roberts, Stuart ; Ryder, Dennis M. ; Olliff, Cedric J. ; Lloyd, Andrew W.
Author_Institution :
Dept. of Electr. Eng., Brighton Univ., UK
Abstract :
A preliminary investigation into the behaviour of a novel polymer membrane containing an embedded liquid crystal under the influence of very low (1 V/mm) DC and AC 100 Hz electric field stresses has been carried out. The rate of diffusion of methylene blue in an aqueous solution with applied electrical stress is reported. The results suggest that the rate of diffusion of methylene blue through the membrane can be controlled by the polarity of an applied DC voltage and by the application of a sinusoidal AC field
Keywords :
biomedical equipment; diffusion; electromigration; filtration; flow through porous media; mechanical variables control; membranes; patient treatment; permeability; polymer dispersed liquid crystals; polymer films; 100 Hz; AC electric field stress; applied DC voltage; applied electrical stress; diffusion rate; embedded liquid crystal; liquid crystalline membranes; low voltage DC electric field stress; methylene blue; molecular diffusion; polarity; polymer membrane; pores; sinusoidal AC field; voltage control; Biomembranes; Crystallization; Drugs; Liquid crystal polymers; Liquid crystals; Permeability; Pulse modulation; Scanning electron microscopy; Stress; Voltage control;
Conference_Titel :
Electrets, 1994. (ISE 8), 8th International Symposium on
Conference_Location :
Paris
Print_ISBN :
0-7803-1940-0
DOI :
10.1109/ISE.1994.515257
