Abstract
Electrophoretic nanoparticles of polystyrene (PS)-encapsulated red pigments were prepared by an emulsifier-free in-situ emulsion polymerization method and the zeta potential of the red nanoparticles was +190 mV. We demonstrated a dual particle electrophoretic display (DPEPD) system with red and white contrast using the positively charged PS-encapsulated red pigment particles and the negatively charged white particles of rutile titanium dioxide. The scattering light intensity ratio of the white and red images was ∼1.7 but we could clearly observe the reversible color change between red and white when the polarity of the applied electric field was switched. 4 The turn-on and turn-off response times of the device were measured to be ∼750 and ∼650 ms, respectively, when +1.4 and -1.4V/μm DC field were alternately applied to the front electrode.
Original language | English |
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Pages (from-to) | 322/[686]-327/[691] |
Journal | Molecular Crystals and Liquid Crystals |
Volume | 492 |
DOIs | |
Publication status | Published - 2008 |
Bibliographical note
Copyright:Copyright 2020 Elsevier B.V., All rights reserved.
Keywords
- Dual particle system
- Electric-optic response characteristics
- Electrophoretic display
- Polymer-inorganic hybrid nanoparticles
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics