Presentation 1998/6/25
Evaluation of the surface alignment and surface order parameter of liquid crystal using phase transition droplet method
Tadashi Kawamura, Tetsuya Miyashita, Tatsuo Uchida,
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Abstract(in English) Anchoring strength is an important parameter to fabricate LC devices. The surface order parameter is necessary for elucidating the anchoring and the liquid crystal alignment mechanism. But, there left a lot of unclear factors for align liquid crystals, because there is no suitable method to measure the surface order parameter quantitatively. The phase transition droplet method newly proposed in this report that is confirmed to measure the surface order parameter quantitatively. Moreover, an model to explain the decrease of order parameter which is increased by rubbing is proposed and the calculated result is agree well with the experimental value. We also found clarify that the alignment layer with no rubbing also has small order and it decreases by the plasma processing.
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Keyword(in English) surface order / phase transition droplet / contact angle / anchoring strength / plasma etching / surface tension
Paper # EID98-14
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Conference Date 1998/6/25(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Evaluation of the surface alignment and surface order parameter of liquid crystal using phase transition droplet method
Sub Title (in English)
Keyword(1) surface order
Keyword(2) phase transition droplet
Keyword(3) contact angle
Keyword(4) anchoring strength
Keyword(5) plasma etching
Keyword(6) surface tension
1st Author's Name Tadashi Kawamura
1st Author's Affiliation Tohoku University Department of electronics, Graduate school of Engineering()
2nd Author's Name Tetsuya Miyashita
2nd Author's Affiliation Tohoku University Department of electronics, Graduate school of Engineering
3rd Author's Name Tatsuo Uchida
3rd Author's Affiliation Tohoku University Department of electronics, Graduate school of Engineering
Date 1998/6/25
Paper # EID98-14
Volume (vol) vol.98
Number (no) 151
Page pp.pp.-
#Pages 6
Date of Issue