Photonic bandgap in achiral liquid crystals: a twist on a twist.

Pociecha, Damian; Vaupotič, Nataša; Majewska, Magdalena; Cruickshank, Ewan; Walker, Rebecca; Storey, John M.D.; Imrie, Corrie T.; Wang, Cheng; Gorecka, Ewa

Abstract

Achiral mesogenic molecules are shown to be able to spontaneously assemble into liquid crystalline smectic phases having either simple or double-helical structures. At the transition between these phases, the double-helical structure unwinds. As a consequence, in some temperature range, the pitch of the helix becomes comparable to the wavelength of visible light and the selective reflection of light in the visible range is observed. The photonic bandgap phenomenon is reported for achiral liquid crystals.

Citation

POCIECHA, D., VAUPOTIČ, N., MAJEWSKA, M., CRUICKSHANK, E., WALKER, R., STOREY, J.M.D., IMRIE, C.T., WANG, C. and GORECKA, E. 2021. Photonic bandgap in achiral liquid crystals: a twist on a twist. Advanced materials [online], 33(39), article 2103288. Available from: https://doi.org/10.1002/adma.202103288

• Journal Article Type: Article
• Acceptance Date: Jun 22, 2021
• Online Publication Date: Aug 16, 2021
• Publication Date: Oct 1, 2021
• Deposit Date: Aug 15, 2023
• Publicly Available Date: Aug 15, 2023
• Journal: Advanced materials
• Print ISSN: 0935-9648
• Electronic ISSN: 1521-4095
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 33
• Issue: 39
• Article Number: 2103288
• DOI: https://doi.org/10.1002/adma.202103288
• Keywords: Chirality; Helical structures; Liquid crystals; Photonic bandgap; Twist-bend phases
• Public URL: https://rgu-repository.worktribe.com/output/2010378
• Additional Information: This article has been published with separate supporting information. This supporting information has been incorporated into a single file on this repository and can be found at the end of the file associated with this output.