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Effects of multiwalled carbon nanotube on holographic polymer dispersed liquid crystal
Author(s) -
Sun Ka Ram,
Kim Byung Kyu
Publication year - 2011
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1708
Subject(s) - materials science , carbon nanotube , liquid crystal , polymer , chemical engineering , dispersion (optics) , viscosity , nucleation , diffraction , diffraction efficiency , nanotube , electric field , nanotechnology , composite material , organic chemistry , optoelectronics , optics , chemistry , physics , grating , quantum mechanics , engineering
The morphology and electro‐optical performance of holographic polymer dispersed liquid crystal (HPDLC) were investigated with the addition of multiwalled carbon nanotube (CNT), both pristine and chemically modified one (CNT‐CC). With the addition of CNT, the diffraction efficiency increased and showed a maximum at 0.6% while nucleation was delayed due to the increased mixture viscosity. Film was driven only with CNT due to the induced local electric field of polymer to overcome the threshold resistance. Among the two types of CNT, chemically modified one gave finer CNT dispersion, lower mixture viscosity, larger liquid crystal (LC) droplet, higher diffraction efficiency, and shorter response time while the pristine CNT decreased the driving voltage. Copyright © 2010 John Wiley & Sons, Ltd.