The alignment effect of nematic liquid crystal on NDLC thin films surface

Chang Joon Park, Hyung Ku Kang, Jeoung Yeon Hwang, Young Hwan Kim, Dae-Shik Seo, Han Jin Ahn, Jong Bok Kim, Kyung Chan Kim, Hong Koo Baik

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We studied the nematic liquid crystal (NLC) aligning capabilities using the new alignment material of Nitrogen doped diamond-like carbon (NDLC) thin film. The NDLC thin film exhibits high electrical resistivity and thermal conductivity that are similar to the properties shown by diamond-like carbon (DLC) thin films. The diamond-like properties and nondiamond-like bonding make NDLC an attractive candidate for applications. A high pretilt angle of about 9.9° by ion beam (IB) exposure on the NDLC thin film surface was measured. A good LC alignment is achieved by the IB alignment method on the NDLC thin film surface at annealing temperature of 200°C. The alignment defect of the NLC was observed above annealing temperature of 250°C. Consequently, the high pretilt angle and the good LC alignment by the IB alignment method on the NDLC thin film surface can be achieved.

Original languageEnglish
JournalMolecular Crystals and Liquid Crystals
Volume434
DOIs
Publication statusPublished - 2005 Dec 1

Fingerprint

Diamond
Nematic liquid crystals
Carbon films
Diamonds
Nitrogen
diamonds
liquid crystals
alignment
nitrogen
Thin films
carbon
thin films
Ion beams
ion beams
Annealing
annealing
Thermal conductivity
thermal conductivity
Carbon
conductivity

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Park, Chang Joon ; Kang, Hyung Ku ; Hwang, Jeoung Yeon ; Kim, Young Hwan ; Seo, Dae-Shik ; Ahn, Han Jin ; Kim, Jong Bok ; Kim, Kyung Chan ; Baik, Hong Koo. / The alignment effect of nematic liquid crystal on NDLC thin films surface. In: Molecular Crystals and Liquid Crystals. 2005 ; Vol. 434.
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abstract = "We studied the nematic liquid crystal (NLC) aligning capabilities using the new alignment material of Nitrogen doped diamond-like carbon (NDLC) thin film. The NDLC thin film exhibits high electrical resistivity and thermal conductivity that are similar to the properties shown by diamond-like carbon (DLC) thin films. The diamond-like properties and nondiamond-like bonding make NDLC an attractive candidate for applications. A high pretilt angle of about 9.9° by ion beam (IB) exposure on the NDLC thin film surface was measured. A good LC alignment is achieved by the IB alignment method on the NDLC thin film surface at annealing temperature of 200°C. The alignment defect of the NLC was observed above annealing temperature of 250°C. Consequently, the high pretilt angle and the good LC alignment by the IB alignment method on the NDLC thin film surface can be achieved.",
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The alignment effect of nematic liquid crystal on NDLC thin films surface. / Park, Chang Joon; Kang, Hyung Ku; Hwang, Jeoung Yeon; Kim, Young Hwan; Seo, Dae-Shik; Ahn, Han Jin; Kim, Jong Bok; Kim, Kyung Chan; Baik, Hong Koo.

In: Molecular Crystals and Liquid Crystals, Vol. 434, 01.12.2005.

Research output: Contribution to journalArticle

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T1 - The alignment effect of nematic liquid crystal on NDLC thin films surface

AU - Park, Chang Joon

AU - Kang, Hyung Ku

AU - Hwang, Jeoung Yeon

AU - Kim, Young Hwan

AU - Seo, Dae-Shik

AU - Ahn, Han Jin

AU - Kim, Jong Bok

AU - Kim, Kyung Chan

AU - Baik, Hong Koo

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AB - We studied the nematic liquid crystal (NLC) aligning capabilities using the new alignment material of Nitrogen doped diamond-like carbon (NDLC) thin film. The NDLC thin film exhibits high electrical resistivity and thermal conductivity that are similar to the properties shown by diamond-like carbon (DLC) thin films. The diamond-like properties and nondiamond-like bonding make NDLC an attractive candidate for applications. A high pretilt angle of about 9.9° by ion beam (IB) exposure on the NDLC thin film surface was measured. A good LC alignment is achieved by the IB alignment method on the NDLC thin film surface at annealing temperature of 200°C. The alignment defect of the NLC was observed above annealing temperature of 250°C. Consequently, the high pretilt angle and the good LC alignment by the IB alignment method on the NDLC thin film surface can be achieved.

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