Liquid-crystal tunable color filters based on aluminum metasurfaces

Zu Wen Xie, Jhen Hong Yang, Vishal Vashistha, Wei Lee, Kuo-Ping Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Designing color pixels using plasmonic nanostructures and metasurfaces has become a luring area of research in recent years. Here, we experimentally demonstrated the voltage tunability of a dynamic plasmonic color filter by using an aluminum grating integrated with the nematic liquid crystal (LC). Along with a typical substrate coated with rubbed polyimide film, the aluminum grating itself serves as a molecular alignment layer to form a twisted LC cell. This hybrid structure allows electrically controlled transmission color by applying the voltage. A significant spectral tunability of such a device has been demonstrated by applying the small voltage from 0 to 4 Vrms.

Original languageEnglish
Pages (from-to)30764-30770
Number of pages7
JournalOptics Express
Volume25
Issue number24
DOIs
StatePublished - 27 Nov 2017

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