Optical manipulation of nematic colloids at the interfaces in azo-dye-doped liquid crystals

Andy Ying Guey Fuh, Ming Hsien Li, Te Wei Chang, Yu I. Lee, Shing Trong Wu

Research output: Contribution to journalArticle


This study demonstrates the optical manipulation of colloids dispersed in azo-dye-doped liquid crystals (DDLCs) where the accumulation occurs at the interfaces of the phase domains. We explain the mechanism related to the formation of the domains and the movement of the colloids in DDLCs with respect to the isomer-ization of azo-dye molecules via the illumination of laser beams. The colloids are dragged to the interfaces of the isotropic/nematic domain and the air bubble/isotropic domain by molecular interaction and Marangoni flows.

Original languageEnglish
Pages (from-to)3180-3185
Number of pages6
JournalApplied optics
Issue number12
Publication statusPublished - 2018 Apr 20


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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