Patterned alignment of liquid crystal molecules in silica micro-capillaries

Sławomir Ertman , Abhishek Srivastava , Vladimir Chigrinov , Miłosz Chychłowski , Tomasz Woliński


Controllable alignment of liquid crystal molecules inside micro-capillaries is an essential issue to obtain repeatable devices based on photonic liquid crystal fibers. In this paper we describe in detail the photo-alignment technique for micro-capillaries based on sulfuric azo dye SD-1 which allows for stable alignment of liquid crystal molecules in the direction defined by the polarization of ultra-violet light. Two-step selective irradiation allowed for periodic patterns in which two different alignment configurations were observed simultaneously within a single capillary. The obtained alignment was very stable, even in capillaries as thick as 125 µm of internal diameter.
Author Sławomir Ertman (FP / OPD)
Sławomir Ertman,,
- Optics and Photonics Division
, Abhishek Srivastava - [Hong Kong University of Science and Technology]
Abhishek Srivastava,,
, Vladimir Chigrinov - [Hong Kong University of Science and Technology (HKUST)]
Vladimir Chigrinov,,
, Miłosz Chychłowski (FP / OPD)
Miłosz Chychłowski,,
- Optics and Photonics Division
, Tomasz Woliński (FP / OPD)
Tomasz Woliński,,
- Optics and Photonics Division
Journal seriesLiquid Crystals, ISSN 0267-8292
Issue year2013
Publication size in sheets0.5
Keywords in Englishliquid crystals, photo-alignment, patterned alignment, microstructured optical fibers, microtubes, photonic crystal fibers
ASJC Classification3104 Condensed Matter Physics; 2500 General Materials Science; 1600 General Chemistry
Languageen angielski
Score (nominal)30
Score sourcejournalList
ScoreMinisterial score = 25.0, 09-06-2020, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 09-06-2020, ArticleFromJournal
Publication indicators Scopus Citations = 14; WoS Citations = 12; GS Citations = 18.0; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.1; WoS Impact Factor: 2013 = 2.349 (2) - 2013=1.881 (5)
Citation count*18 (2020-08-22)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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