Effects of conducting polymer poly(3, 4-ethylenedioxythiophene) nanotubes on the electro-optical and dielectric properties of a nematic liquid crystal 4-n-pentyl-4′-cyanobiphenyl host

Ghosh, Sharmistha; Nayek, Prasenjit; Roy, Subir Kr.; Gangopadhyay, Rupali; Molla, Mijanur Rahaman; Dabrowski, Roman
February 2010
Applied Physics Letters;2/15/2010, Vol. 96 Issue 7, p073101
Academic Journal
We report the results of the optical transmission and the capacitance behavior as a function dc electric field of a pristine liquid crystal and conducting polymer nanotube-liquid crystal composite measured in twisted nematic cells. The threshold and driving voltages have been determined from transmission-voltage curve. There is remarkable reduction in the threshold and driving voltage in the polymer nanotube doped liquid crystal cell which is good from application point of view. The residual dc is also reduced significantly in the doped cell and the reduction is even more than that observed in the carbon nanotube doped same liquid crystal system.


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