Patterned alignment of liquid crystal molecules in silica micro-capillaries
Sławomir Ertman , Abhishek Srivastava , Vladimir Chigrinov , Miłosz Chychłowski , Tomasz Woliński
AbstractControllable 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.
|Journal series||Liquid Crystals, ISSN 0267-8292|
|Publication size in sheets||0.5|
|Keywords in English||liquid crystals, photo-alignment, patterned alignment, microstructured optical fibers, microtubes, photonic crystal fibers|
|ASJC Classification||; ;|
|Score|| = 25.0, 09-06-2020, ArticleFromJournal|
= 30.0, 09-06-2020, ArticleFromJournal
|Publication indicators||= 14; = 12; = 18.0; : 2013 = 1.1; : 2013 = 2.349 (2) - 2013=1.881 (5)|
|Citation count*||18 (2020-08-22)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.