Advanced search
Publication Cover
Liquid Crystals Volume 41, 2014 - Issue 6
Submit an article Journal homepage
902
Views
49
CrossRef citations to date
0
Altmetric
Research Article

Superior fast switching of liquid crystal devices using graphene quantum dots

Min-Jae Choa Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Hong-Gyu Parka Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Hae-Chang Jeonga Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Jae-Won Leea Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Yoon Ho Junga Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Dai-Hyun Kima Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Jeong-Hwan Kima Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Jin-Woo Leeb Technology Policy Department, Korea Electronics Technology Institute, Seongnam-si, Republic of Korea
&
Dae-Shik Seoa Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of KoreaCorrespondence[email protected]
 show all
Pages 761-767 | Received 11 Dec 2013, Accepted 27 Jan 2014, Published online: 14 Feb 2014
 
Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days

Abstract

We report the doping effect of graphene quantum dots (QDs) in a nematic liquid crystal (NLC) device. The use of graphene QDs leads to improved electro-optical (EO) properties, such as faster response times and a decreased threshold voltage. A 14.8% reduction in the threshold voltage (3.165 V), a 30% decrease in the falling time (4.9 ms) and a 63.6% decrease in the rising time (2.4 ms) were observed for twisted nematic (TN) LC devices (LCDs) that were doped with QDs. We confirm that the doping of the TN-LCD with graphene QDs reduces the field-screening effect, which is caused by impurity ions, whereas the other properties of conventional TN-LCDs are maintained.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Order Reprints Request Corporate Permissions

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

Request Academic Permissions

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.

Related Research Data

Dielectric properties of a strongly polar nematic liquid crystal compound doped with gold nanoparticles
Source: Informa UK Limited
Nanoparticle-Enabled Ion Trapping and Ion Generation in Liquid Crystals
Source: Hindawi Limited
Electrooptical properties of hybrid liquid crystalline systems containing CdSe quantum dots
Source: AIP Publishing
Improvement of the dynamic responses of liquid crystal mixtures through γ-Fe2O3 nanoparticle doping and driving mode adjustment
Source: Informa UK Limited
Liquid crystal alignment on polyurethane layer treated by ion beam irradiation with low power intensity
Source: The Electrochemical Society
Non-covalent intermolecular interactions of colloidal nematic liquid crystals doped with graphene oxide
Source: Informa UK Limited
Dielectric and electro-optical properties of zinc ferrite nanoparticles dispersed nematic liquid crystal 4’-Heptyl-4-biphenylcarbonnitrile
Source: Informa UK Limited
Perspectives in Liquid-Crystal-Aided Nanotechnology and Nanoscience
Source: (:unav)
Electro-optical switching of liquid crystals sandwiched between ion-beam-spurted graphene quantum dots-doped PEDOT:PSS composite layers.
Source: The Optical Society
Thermal and Electro-optical Properties of Graphene Oxide/Dye-Doped Nematic Liquid Crystal
Source: Springer Science and Business Media LLC
Systematic study of the chiral smectic phases of a fluorinated compound
Source: Informa UK Limited

Linking provided by 

Related research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.