Electro-optic response characteristics of a dual particle electrophoretic display system

Yong Hwan Ahn, Geun Chae Yu, Young Chul Kim, Sang Soo Lee, Junkyung Kim

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)

    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 languageEnglish
    Pages (from-to)322/[686]-327/[691]
    JournalMolecular Crystals and Liquid Crystals
    Volume492
    DOIs
    Publication statusPublished - 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

    • General Chemistry
    • General Materials Science
    • Condensed Matter Physics

    Fingerprint

    Dive into the research topics of 'Electro-optic response characteristics of a dual particle electrophoretic display system'. Together they form a unique fingerprint.

    Cite this