Multi-field driven thermochromic films and preparation of multi-color patterns. Issue 13 (21st October 2022)

• Record Type: Journal Article
• Authors: Zheng, Jiasong; He, Zemin; Li, Chunsheng; Miao, Zongcheng; Wang, Dong; Luan, Yi; Li, Yuzhan; Zhao, Yuzhen
• Is Part Of: Liquid crystals. Volume 49:Issue 13(2022)
• Page Start: 1853
• Page End: 1865
• Publication Date: 2022-10-21
• Subjects: thermochromic films -- polymer-dispersed liquid crystal -- thermochromic liquid crystal microcapsule -- multi-field driven -- multi-colour patterns; Liquid crystals -- Periodicals; 548.905
• DOI: 10.1080/02678292.2022.2072010
• Languages: English
• ISSNs: 0267-8292

Abstract

ABSTRACT: In this paper, multi-field driven thermochromic films (TCF) were successfully prepared firstly. The upper layer is polymer-dispersed liquid crystal (PDLC) film prepared by polymerisation-induced phase separation (PIPS), and the lower layer is thermochromic liquid crystal microcapsule film prepared by centrifugal spin-coating method. The effects of diluent content, liquid crystal content and spin coating speed on the electro-optical properties and morphology of the thermochromic films were investigated by three sets of experiments secondly. Finally, multi-field driven multi-colour patterns were successfully prepared by film formation on conductive glass and flexible conductive films. Thermal ageing tests proved that the thermochromic films possess better service life, which provides a possibility for the wide application of liquid crystal films. GRAPHICAL ABSTRACT: uf0001