Electrical orientation behaviour of a nematic liquid crystal with negative dielectric anisotropy above the microelectrodes

Factors for the electrical orientation on interdigitated microelectrodes deposited on a substrate, a microdielectrometric sensor (or a sensor), were discussed experimentally using a model nematic liquid crystal with negative dielectric anisotropy. The electrical orientation behaviour of the nematic...

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Bibliographic Details
Published in:Liquid crystals 2014-10, Vol.41 (10), p.1419-1429
Main Authors: Tanaka, Katsufumi, Tanabe, Yuichiro, Iwamitsu, Yuka, Uchimura, Masayoshi, Kobayashi, Haruki, Akiyama, Ryuichi
Format: Article
Language:English
Subjects:
Anisotropy
Deposition
Dielectrics
Electric fields
electrical orientation
Electrodes
Liquid crystal polymers
Liquid crystals
microdielectrometry
Microelectrodes
Microscopy
Molecules
negative dielectric anisotropy
Nematic
nematic liquid crystals
Orientation
polarised optical microscopy
Sensors
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Summary:Factors for the electrical orientation on interdigitated microelectrodes deposited on a substrate, a microdielectrometric sensor (or a sensor), were discussed experimentally using a model nematic liquid crystal with negative dielectric anisotropy. The electrical orientation behaviour of the nematic liquid crystal was investigated using microdielectrometry and polarised optical microscopy. The experimental results were discussed in relation to electric-field line, surface topology, anchoring of the liquid crystalline molecules to the microelectrodes, and transversal rotation of a rode-like molecule of the liquid crystal with negative dielectric anisotropy.
ISSN:0267-8292
1366-5855
DOI:10.1080/02678292.2014.923537