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Liquid Crystals Volume 41, 2014 - Issue 2
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Original Articles

Residual DC voltage-free behaviour of liquid crystal system with nickel nanoparticle dispersion

Hak Moo LeeInformation Display Device Laboratory, Department of Electrical and Electronic Engineering,Yonsei University, Seodaemun-gu, Seoul, Republic of Korea
,
Hyung-Koo ChungInformation Display Device Laboratory, Department of Electrical and Electronic Engineering,Yonsei University, Seodaemun-gu, Seoul, Republic of Korea
,
Hong-Gyu ParkInformation Display Device Laboratory, Department of Electrical and Electronic Engineering,Yonsei University, Seodaemun-gu, Seoul, Republic of Korea
,
Hae-Chang JeongInformation Display Device Laboratory, Department of Electrical and Electronic Engineering,Yonsei University, Seodaemun-gu, Seoul, Republic of Korea
,
Jae-Jun HanInformation Display Device Laboratory, Department of Electrical and Electronic Engineering,Yonsei University, Seodaemun-gu, Seoul, Republic of Korea
,
Min-Jae ChoInformation Display Device Laboratory, Department of Electrical and Electronic Engineering,Yonsei University, Seodaemun-gu, Seoul, Republic of Korea
,
Jin-Woo LeeTechnology Policy Department, Korea Electronics Technology Institute, Seongnam-si, Gyeonggi-do, Republic of Korea
&
Dae-Shik SeoInformation Display Device Laboratory, Department of Electrical and Electronic Engineering,Yonsei University, Seodaemun-gu, Seoul, Republic of KoreaCorrespondence[email protected]
 show all
Pages 247-251 | Received 02 Sep 2013, Accepted 30 Sep 2013, Published online: 12 Nov 2013
 
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Abstract

In this study, we report on characterisation of residual DC voltage in homogeneously aligned nematic liquid crystal (N-LC) system with ferromagnetic Ni nanoparticles. A residual DC is greatly reduced in the N-LC cell as the increase of Ni particle concentration in LC mixture. The relationship between the doping concentration in Ni nanoparticles and the trapping of impurity ions was examined. In addition, the N-LC cells had faster response times and lower driving voltages, which translated to better electro-optical (EO) characteristics, than pure LC cells.

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