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Title: Photonic Bandgap in Achiral Liquid Crystals—A Twist on a Twist

Journal Article · · Advanced Materials
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3];  [4]; ORCiD logo [1]
  1. Faculty of Chemistry University of Warsaw Zwirki i Wigury 101 Warsaw 02‐089 Poland
  2. Department of Physics Faculty of Natural Sciences and Mathematics University of Maribor Koroška 160 Maribor 2000 Slovenia, Jozef Stefan Institute Jamova 39 Ljubljana 1000 Slovenia
  3. Department of Chemistry King's College University of Aberdeen Aberdeen AB24 3UE UK
  4. Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 94720 USA

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.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
National Science Centre (Poland); Slovenian Research Agency (ARRS); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1813485
Journal Information:
Advanced Materials, Journal Name: Advanced Materials Journal Issue: 39 Vol. 33; ISSN 0935-9648
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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