Influence of the washing process on the aligning capability of a nematic liquid crystal on polymer surfaces

Dae Shik Seo

doi:10.1080/026782900202273

Influence of the washing process on the aligning capability of a nematic liquid crystal on polymer surfaces

Dae Shik Seo

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The influence of washing processes on the liquid crystal (LC) aligning capability on rubbed polyimide (PI) surfaces containing the CONH moiety were investigated. The induced optical retardation from a non-washing process on a rubbed PI surface is larger than when the washing processes are included. The pretilt angles in 4-n-pentyl-4'-cyanobiphenyl (5CB) were decreased by the washing process. The polar anchoring energy of 5CB was decreased by the washing processes on a weakly rubbed PI surface. The surface order parameter S_S of 5CB strongly depends on the rubbing strength and washing materials. Consequently, the LC aligning capability may be strongly attributed to the polymer characteristics and the washing processes.

Original language	English
Pages (from-to)	789-793
Number of pages	5
Journal	Liquid Crystals
Volume	27
Issue number	6
DOIs	https://doi.org/10.1080/026782900202273
Publication status	Published - 2000

All Science Journal Classification (ASJC) codes

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

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10.1080/026782900202273

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title = "Influence of the washing process on the aligning capability of a nematic liquid crystal on polymer surfaces",

abstract = "The influence of washing processes on the liquid crystal (LC) aligning capability on rubbed polyimide (PI) surfaces containing the CONH moiety were investigated. The induced optical retardation from a non-washing process on a rubbed PI surface is larger than when the washing processes are included. The pretilt angles in 4-n-pentyl-4'-cyanobiphenyl (5CB) were decreased by the washing process. The polar anchoring energy of 5CB was decreased by the washing processes on a weakly rubbed PI surface. The surface order parameter SS of 5CB strongly depends on the rubbing strength and washing materials. Consequently, the LC aligning capability may be strongly attributed to the polymer characteristics and the washing processes.",

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AU - Seo, Dae Shik

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N2 - The influence of washing processes on the liquid crystal (LC) aligning capability on rubbed polyimide (PI) surfaces containing the CONH moiety were investigated. The induced optical retardation from a non-washing process on a rubbed PI surface is larger than when the washing processes are included. The pretilt angles in 4-n-pentyl-4'-cyanobiphenyl (5CB) were decreased by the washing process. The polar anchoring energy of 5CB was decreased by the washing processes on a weakly rubbed PI surface. The surface order parameter SS of 5CB strongly depends on the rubbing strength and washing materials. Consequently, the LC aligning capability may be strongly attributed to the polymer characteristics and the washing processes.

AB - The influence of washing processes on the liquid crystal (LC) aligning capability on rubbed polyimide (PI) surfaces containing the CONH moiety were investigated. The induced optical retardation from a non-washing process on a rubbed PI surface is larger than when the washing processes are included. The pretilt angles in 4-n-pentyl-4'-cyanobiphenyl (5CB) were decreased by the washing process. The polar anchoring energy of 5CB was decreased by the washing processes on a weakly rubbed PI surface. The surface order parameter SS of 5CB strongly depends on the rubbing strength and washing materials. Consequently, the LC aligning capability may be strongly attributed to the polymer characteristics and the washing processes.

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JO - Liquid Crystals

JF - Liquid Crystals

IS - 6

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Influence of the washing process on the aligning capability of a nematic liquid crystal on polymer surfaces

Abstract

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