Journal article
Plasma modification of fluoropolymers for aligning liquid crystals
Journal of display technology, v 4(2), pp 160-165
01 Jun 2008
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
In this paper we describe methods to control liquid crystal (LC) alignment using plasma discharge on ferroelectric fluoropolymers. Two different plasma modification techniques were investigated: corona discharge and RF plasma in Ar gas. Corona discharge is a proven technique known to reorient the dipoles in poly (vinylidene fluoride) and its copolymers resulting in a strong remnant polarization. The polarization was patterned resulting in preferential LC alignment in selected regions. RF plasma in Ar gas defluorinates the polymer surface leading to planar alignment of positive dielectric anisotropy LCs. The defluorination of the alignment layer also causes low voltage switching of the LC.
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Details
- Title
- Plasma modification of fluoropolymers for aligning liquid crystals
- Creators
- Hemang J. Shah - Qualcomm (United States)David Delaine - Drexel UniversityAdam K. Fontecchio - Drexel University
- Publication Details
- Journal of display technology, v 4(2), pp 160-165
- Publisher
- IEEE
- Number of pages
- 6
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Electrical and Computer Engineering
- Web of Science ID
- WOS:000259552500008
- Scopus ID
- 2-s2.0-44649163206
- Other Identifier
- 991020531840804721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- Web of Science research areas
- Engineering, Electrical & Electronic
- Optics
- Physics, Applied