Creation of liquid crystal waveguides with scanning force microscopy.
Science
; 265(5171): 512-4, 1994 Jul 22.
Article
em En
| MEDLINE
| ID: mdl-17781310
ABSTRACT
The rubbing of a polymer layer, a commonly applied process, leads to an anisotropic surface morphology, aligning liquid crystal molecules. Scanning force microscopy can be used to intentionally create areas with a similar anisotropy by operating the instrument at loads in the range of 10(-7) to 10(-5) newtons. These areas have an orientation effect on liquid crystals indistinguishable from the rubbing process, which allows a systematic investigation of the orientation properties of an alignment layer as a function of its nanometer-scale morphology. Refractive index patterns can be tailored with this method by scratching a suitable area, as demonstrated by fabrication of an optical waveguide 6 micrometers wide and 5 millimeters long.
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MEDLINE
Idioma:
En
Revista:
Science
Ano de publicação:
1994
Tipo de documento:
Article