Olena S. Iadlovska
Tuning selective reflection of light by surface anchoring in cholesteric cells with oblique helicoidal structures
Iadlovska, Olena S.; Maxwell, Graham R.; Babakhanova, Greta; Mehl, Georg H.; Welch, Christopher; Shiyanovskii, Sergij V.; Lavrentovich, Oleg D.
Graham R. Maxwell
Professor Georg Mehl G.H.Mehl@hull.ac.uk
Professor of Organic and Materials Chemistry
Sergij V. Shiyanovskii
Oleg D. Lavrentovich
Selective reflection of light by oblique helicoidal cholesteric (ChOH) can be tuned in a very broad spectral range by an applied electric field. In this work, we demonstrate that the peak wavelength of the selective reflection can be controlled by surface alignment of the director in sandwich cells. The peak wavelength is blue-shifted when the surface alignment is perpendicular to the bounding plates and red-shifted when it is planar. The effect is explained by the electric field redistribution within the cell caused by spatially varying heliconical ChOH structure. The observed phenomenon can be used in sensing applications.
|Journal Article Type||Letter|
|Publication Date||Apr 15, 2018|
|Publisher||Optical Society of America|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Iadlovska, O. S., Maxwell, G. R., Babakhanova, G., Mehl, G. H., Welch, C., Shiyanovskii, S. V., & Lavrentovich, O. D. (2018). Tuning selective reflection of light by surface anchoring in cholesteric cells with oblique helicoidal structures. Optics letters, 43(8), 1850-1853. https://doi.org/10.1364/ol.43.001850|
|Keywords||Chiral media, Electro-optical materials, Liquid crystals, Bragg reflectors; Birefringence; Spectra|
|Copyright Statement||© 2018 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.|
|Additional Information||This article is maintained by: OSA - The Optical Society; Crossref DOI link to publisher maintained version: https://doi.org/10.1364/OL.43.001850; Article type: letter; Similarity check: Screened by Similarity Check; Peer reviewed: Yes; Review process: Single blind; Received: 29 December 2017; Accepted: 6 March 2018; Published: 11 April 2018; Copyright: © 2018 Optical Society of America|
© 2018 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
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