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. 2016 Oct 26;6:36148. doi: 10.1038/srep36148

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Copyright © 2016, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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Transmission spectra exhibiting photonic bandgap (transmission dips) of the 1-mm thick A-BPLC sample illuminated by a 532-nm pump beam intensity ~15 mW/cm² (pump power ~1.5 mW). The spectra are normalizing with the transmission spectrum of the sample in the isotropic (liquid) phase. Photo inserts show the different reflection colors from the regions under prolonged laser illumination at higher pump intensity ~80 mW/cm² for BPI and BPII phase.