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. 2019 Mar 25;9:5040. doi: 10.1038/s41598-019-41615-1

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Chirality of photoluminescence emission with polarized detection presented as polar plots of normalized intensity versus λ/4 waveplate angle: (a) for NWs without Au and for NWs with Au for positive and negative tilt angles (θ). (b) Different tilt angles for NWs with Au. The dots represent experimental data and the continuous lines are double sinusoidal fits. The radial scale in each plot ranges from 0.7 to 1.02. The last panel in (b) presents the WP angles corresponding the right-handed (R) and left-handed (L) polarizations.