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Liquid Crystals Volume 41, 2014 - Issue 1
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Original Articles

Enhanced electro-optical behaviour of a liquid crystal system via multi-walled carbon nanotube doping

Kyung-Ju LeeDepartment of Electrical Engineering, Korea University, College of Engineering, 1 Bldg, Seongbuk-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
,
Dai-Hyun KimInformation Display Device Laboratory, Department of Electrical and Electronic Engineering, Yonsei University, Seodaemun-gu, Seoul, Republic of Korea
,
Dae-Shik SeoInformation 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
&
Byung-Moo MoonDepartment of Electrical Engineering, Korea University, College of Engineering, 1 Bldg, Seongbuk-Gu, Seoul, Republic of KoreaCorrespondence[email protected]
 show all
Pages 25-29 | Received 03 Apr 2013, Accepted 23 Jul 2013, Published online: 06 Nov 2013
 
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Abstract

We propose a multi-walled carbon nanotube (MWCNT)-doped liquid crystal (LC) device with enhanced electro-optical properties. MWCNT-doped LC cells were successfully operated as a twisted nematic LC device with high performance. The LC cells fabricated with MWCNT-doped LCs and a polyimide layer exhibited the best electro-optical properties, such as a low threshold voltage (1.60 V) and fast response time (13.95 ms). MWCNT doping decreased the pre-tilt angles of LC mixtures. Additionally, UV-visible transmittances and photomicrograph images of LC cells indicated LCD application potential with clear and uniform LC alignment.

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