Electrothermo-optical effect in liquid crystals and its applications

Yu Cheng Hsiao, Wei Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


Electro-optical effects in liquid crystals (LCs) have been widely utilized in many optical components and photonic devices, thanks to the anisotropic media that can be easily manipulated by an electric field to modulate the light. In general, dielectric heating in LC applications is negligible because their orientational dielectric relaxations occur at high frequencies. Here we focus on a dual-frequency LC characterized by its much lower relaxation frequency. The fieldinduced heat strongly affects the LC ordering and optical properties. The electrothermo-optical effect reveals an unusual behavior compared with the well-known electro-optical effect in regular LCs. Based on the electrothermo-optical effect, some applications such as optical modulators or tunable optical shutters are demonstrated.

Original languageEnglish
Title of host publicationEmerging Liquid Crystal Technologies XII 2017
EditorsLiang-Chy Chien
ISBN (Electronic)9781510606913
Publication statusPublished - Jan 1 2017
Externally publishedYes
Event2017 Emerging Liquid Crystal Technologies XII Conference, ELCT 2017 - San Francisco, United States
Duration: Jan 31 2017Feb 2 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


Conference2017 Emerging Liquid Crystal Technologies XII Conference, ELCT 2017
Country/TerritoryUnited States
CitySan Francisco


  • cholesteric liquid crystals
  • dielectric heating effect
  • photonic devices

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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