Enhanced switching behavior of iron oxide nanoparticle-doped liquid-crystal display

Woo Seung Koo, Hyung Koo Chung, Hong Gyu Park, Jae Jun Han, Hae Chang Jeong, Min Jae Cho, Dai Hyun Kim, Dae Shik Seo

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

It is well known that doping nanoparticles (NPs) in liquid crystals (LCs) can easily change the physical and electro-optical properties of LC mixture. In this paper, we demonstrate homogeneous, aligned nematic LC (N-LC) system dispersed in iron oxide (Fe2O3) NPs. The prepared Fe2O3 NPs have an average particle size of 50 nm. By changing the doping concentration of Fe2O3 NPs, we observed the characteristics of LC systems. Electrooptical (EO) characteristics included faster rising and falling times (2.14 ms and 10.24 ms, respectively) and lower driving voltage (1.45 V) compared with a pure N-LC cell. We demonstrated these results via the relationship between dielectric constant and LC device properties. The results were verified by software simulation based on general physical properties. Moreover, we observed that LC system with Fe2O3 NPs could be accomplished without capacitance hysteresis by capturing charged impurities. Superior performance of LC cell with Fe2O3 NPs indicates that the proposed LC system have strong potential for use in the production of advanced LC displays.

Original languageEnglish
Pages (from-to)8609-8614
Number of pages6
JournalJournal of Nanoscience and Nanotechnology
Volume14
Issue number11
DOIs
Publication statusPublished - 2014 Nov 1

Fingerprint

Liquid Crystals
Liquid crystal displays
Iron oxides
iron oxides
doped crystals
Nanoparticles
Liquid crystals
liquid crystals
nanoparticles
Doping (additives)
Dielectric liquids
Nematic liquid crystals
ferric oxide
Hysteresis
Permittivity
Capacitance
cells
Optical properties
Physical properties
Particle Size

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Koo, Woo Seung ; Chung, Hyung Koo ; Park, Hong Gyu ; Han, Jae Jun ; Jeong, Hae Chang ; Cho, Min Jae ; Kim, Dai Hyun ; Seo, Dae Shik. / Enhanced switching behavior of iron oxide nanoparticle-doped liquid-crystal display. In: Journal of Nanoscience and Nanotechnology. 2014 ; Vol. 14, No. 11. pp. 8609-8614.
@article{ff427d3c33c74f64a88253ac120c0c68,
title = "Enhanced switching behavior of iron oxide nanoparticle-doped liquid-crystal display",
abstract = "It is well known that doping nanoparticles (NPs) in liquid crystals (LCs) can easily change the physical and electro-optical properties of LC mixture. In this paper, we demonstrate homogeneous, aligned nematic LC (N-LC) system dispersed in iron oxide (Fe2O3) NPs. The prepared Fe2O3 NPs have an average particle size of 50 nm. By changing the doping concentration of Fe2O3 NPs, we observed the characteristics of LC systems. Electrooptical (EO) characteristics included faster rising and falling times (2.14 ms and 10.24 ms, respectively) and lower driving voltage (1.45 V) compared with a pure N-LC cell. We demonstrated these results via the relationship between dielectric constant and LC device properties. The results were verified by software simulation based on general physical properties. Moreover, we observed that LC system with Fe2O3 NPs could be accomplished without capacitance hysteresis by capturing charged impurities. Superior performance of LC cell with Fe2O3 NPs indicates that the proposed LC system have strong potential for use in the production of advanced LC displays.",
author = "Koo, {Woo Seung} and Chung, {Hyung Koo} and Park, {Hong Gyu} and Han, {Jae Jun} and Jeong, {Hae Chang} and Cho, {Min Jae} and Kim, {Dai Hyun} and Seo, {Dae Shik}",
year = "2014",
month = "11",
day = "1",
doi = "10.1166/jnn.2014.9953",
language = "English",
volume = "14",
pages = "8609--8614",
journal = "Journal of Nanoscience and Nanotechnology",
issn = "1533-4880",
publisher = "American Scientific Publishers",
number = "11",

}

Enhanced switching behavior of iron oxide nanoparticle-doped liquid-crystal display. / Koo, Woo Seung; Chung, Hyung Koo; Park, Hong Gyu; Han, Jae Jun; Jeong, Hae Chang; Cho, Min Jae; Kim, Dai Hyun; Seo, Dae Shik.

In: Journal of Nanoscience and Nanotechnology, Vol. 14, No. 11, 01.11.2014, p. 8609-8614.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Enhanced switching behavior of iron oxide nanoparticle-doped liquid-crystal display

AU - Koo, Woo Seung

AU - Chung, Hyung Koo

AU - Park, Hong Gyu

AU - Han, Jae Jun

AU - Jeong, Hae Chang

AU - Cho, Min Jae

AU - Kim, Dai Hyun

AU - Seo, Dae Shik

PY - 2014/11/1

Y1 - 2014/11/1

N2 - It is well known that doping nanoparticles (NPs) in liquid crystals (LCs) can easily change the physical and electro-optical properties of LC mixture. In this paper, we demonstrate homogeneous, aligned nematic LC (N-LC) system dispersed in iron oxide (Fe2O3) NPs. The prepared Fe2O3 NPs have an average particle size of 50 nm. By changing the doping concentration of Fe2O3 NPs, we observed the characteristics of LC systems. Electrooptical (EO) characteristics included faster rising and falling times (2.14 ms and 10.24 ms, respectively) and lower driving voltage (1.45 V) compared with a pure N-LC cell. We demonstrated these results via the relationship between dielectric constant and LC device properties. The results were verified by software simulation based on general physical properties. Moreover, we observed that LC system with Fe2O3 NPs could be accomplished without capacitance hysteresis by capturing charged impurities. Superior performance of LC cell with Fe2O3 NPs indicates that the proposed LC system have strong potential for use in the production of advanced LC displays.

AB - It is well known that doping nanoparticles (NPs) in liquid crystals (LCs) can easily change the physical and electro-optical properties of LC mixture. In this paper, we demonstrate homogeneous, aligned nematic LC (N-LC) system dispersed in iron oxide (Fe2O3) NPs. The prepared Fe2O3 NPs have an average particle size of 50 nm. By changing the doping concentration of Fe2O3 NPs, we observed the characteristics of LC systems. Electrooptical (EO) characteristics included faster rising and falling times (2.14 ms and 10.24 ms, respectively) and lower driving voltage (1.45 V) compared with a pure N-LC cell. We demonstrated these results via the relationship between dielectric constant and LC device properties. The results were verified by software simulation based on general physical properties. Moreover, we observed that LC system with Fe2O3 NPs could be accomplished without capacitance hysteresis by capturing charged impurities. Superior performance of LC cell with Fe2O3 NPs indicates that the proposed LC system have strong potential for use in the production of advanced LC displays.

UR - http://www.scopus.com/inward/record.url?scp=84908430600&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84908430600&partnerID=8YFLogxK

U2 - 10.1166/jnn.2014.9953

DO - 10.1166/jnn.2014.9953

M3 - Article

VL - 14

SP - 8609

EP - 8614

JO - Journal of Nanoscience and Nanotechnology

JF - Journal of Nanoscience and Nanotechnology

SN - 1533-4880

IS - 11

ER -