Elucidating the fine details of cholesteric liquid crystal shell reflection patterns

Autor(en)

Yong Geng, JungHyun Noh, Irena Drevensek-Olenik, Romano Rupp, Jan Lagerwall

Abstrakt

Clusters of planar-aligned short-pitch cholesteric liquid crystal spheres generate dynamic colourful patterns due to multiple selective reflections from the radially oriented cholesteric helices in neighbour shells at varying distances. These photonic communication patterns were widely investigated for the cases of both droplets and shells, demonstrating not only intriguing optical phenomena but also potential for applications as new optical elements for photonics, sensing or security pattern generation. However, the optics of these clusters is truly complex and until now only the strongest and most fundamental reflections have been analysed and explained. In this report, we elucidate the origin of a number of more subtle reflections and we explain the extension in space of various spots as well as their internal colour variations.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

University of Luxembourg, University of Ljubljana, Jožef Stefan Institute (IJS)

Journal

Liquid Crystals

Band

44

Seiten

1948-1959

Anzahl der Seiten

12

ISSN

0267-8292

DOI

https://doi.org/10.1080/02678292.2017.1363916

Publikationsdatum

2017

Peer-reviewed

Ja

ÖFOS 2012

105113 Kristallographie, 103018 Materialphysik

Schlagwörter

ASJC Scopus Sachgebiete

Condensed Matter Physics, Allgemeine Chemie, Allgemeine Materialwissenschaften

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/5e481f6e-e899-4f92-aa4f-dfd8853ecd8e