Premium
P‐130: Plasma Beam Alignment of Reactive Mesogenes
Author(s) -
Yaroshchuk Oleg,
Kravchuk Ruslan,
Parri Owain
Publication year - 2007
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2785398
Subject(s) - homeotropic alignment , planar , materials science , beam (structure) , plasma , optics , plasma processing , optoelectronics , liquid crystal , computer science , physics , computer graphics (images) , quantum mechanics
Abstract We demonstrate that plasma beam processing of the alignment substrates, earlier recognized as an effective tool of liquid crystal alignment, provides excellent alignment of reactive mesogenes (RMs). for this processing we utilized anode layers source generating two sheet‐like beams of accelerated plasma allowing to treat large‐area substrates by sample movement across the plasma “sheets”. The oblique treatment by plasma beam results in planar or oblique alignment of planar RMs (p‐RMs) and homeotropic alignment of homeotropic RMs (h‐RMs). The homeotropic alignment of h‐RMs can also be achieved by normal processing with plasma beam or processing by diffuse (non‐directed) plasma. Good alignment effect is observed for a big variety of organic and inorganic materials. The widely used in LCD technology glass, silicon and plastic substrates processed by plasma beam also demonstrate excellent RM alignment that excludes necessity to use additional alignment layers. Besides, in the case of flexible plastic substrates, roll‐to‐roll alignment treatment can be realized. Thus the developed method is an advance in technology of optical films based on RMs.