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 language | English |
|---|---|
| Pages (from-to) | 8609-8614 |
| Number of pages | 6 |
| Journal | Journal of Nanoscience and Nanotechnology |
| Volume | 14 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2014 Nov 1 |
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All Science Journal Classification (ASJC) codes
- Bioengineering
- Chemistry(all)
- Biomedical Engineering
- Materials Science(all)
- Condensed Matter Physics
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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 journal › Article
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.
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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 -