Experimental demonstration of the microscopic origin of circular dichroism in two-dimensional metamaterials
Optical activity and circular dichroism are fascinating physical phenomena originating from the interaction of light with chiral molecules or other nano objects lacking mirror symmetries in three-dimensional (3D) space. While chiral optical properties are weak in most of naturally occurring material...
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Nature Publishing Group
2016
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4917967/ |
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pubmed-49179672016-07-07 Experimental demonstration of the microscopic origin of circular dichroism in two-dimensional metamaterials Khanikaev, A. B. Arju, N. Fan, Z. Purtseladze, D. Lu, F. Lee, J. Sarriugarte, P. Schnell, M. Hillenbrand, R. Belkin, M. A. Shvets, G. Article Optical activity and circular dichroism are fascinating physical phenomena originating from the interaction of light with chiral molecules or other nano objects lacking mirror symmetries in three-dimensional (3D) space. While chiral optical properties are weak in most of naturally occurring materials, they can be engineered and significantly enhanced in synthetic optical media known as chiral metamaterials, where the spatial symmetry of their building blocks is broken on a nanoscale. Although originally discovered in 3D structures, circular dichroism can also emerge in a two-dimensional (2D) metasurface. The origin of the resulting circular dichroism is rather subtle, and is related to non-radiative (Ohmic) dissipation of the constituent metamolecules. Because such dissipation occurs on a nanoscale, this effect has never been experimentally probed and visualized. Using a suite of recently developed nanoscale-measurement tools, we establish that the circular dichroism in a nanostructured metasurface occurs due to handedness-dependent Ohmic heating. Nature Publishing Group 2016-06-22 /pmc/articles/PMC4917967/ /pubmed/27329108 http://dx.doi.org/10.1038/ncomms12045 Text en Copyright © 2016, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ 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/ |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Khanikaev, A. B. Arju, N. Fan, Z. Purtseladze, D. Lu, F. Lee, J. Sarriugarte, P. Schnell, M. Hillenbrand, R. Belkin, M. A. Shvets, G. |
| spellingShingle |
Khanikaev, A. B. Arju, N. Fan, Z. Purtseladze, D. Lu, F. Lee, J. Sarriugarte, P. Schnell, M. Hillenbrand, R. Belkin, M. A. Shvets, G. Experimental demonstration of the microscopic origin of circular dichroism in two-dimensional metamaterials |
| author_facet |
Khanikaev, A. B. Arju, N. Fan, Z. Purtseladze, D. Lu, F. Lee, J. Sarriugarte, P. Schnell, M. Hillenbrand, R. Belkin, M. A. Shvets, G. |
| author_sort |
Khanikaev, A. B. |
| title |
Experimental demonstration of the microscopic origin of circular dichroism in two-dimensional metamaterials |
| title_short |
Experimental demonstration of the microscopic origin of circular dichroism in two-dimensional metamaterials |
| title_full |
Experimental demonstration of the microscopic origin of circular dichroism in two-dimensional metamaterials |
| title_fullStr |
Experimental demonstration of the microscopic origin of circular dichroism in two-dimensional metamaterials |
| title_full_unstemmed |
Experimental demonstration of the microscopic origin of circular dichroism in two-dimensional metamaterials |
| title_sort |
experimental demonstration of the microscopic origin of circular dichroism in two-dimensional metamaterials |
| description |
Optical activity and circular dichroism are fascinating physical phenomena originating from the interaction of light with chiral molecules or other nano objects lacking mirror symmetries in three-dimensional (3D) space. While chiral optical properties are weak in most of naturally occurring materials, they can be engineered and significantly enhanced in synthetic optical media known as chiral metamaterials, where the spatial symmetry of their building blocks is broken on a nanoscale. Although originally discovered in 3D structures, circular dichroism can also emerge in a two-dimensional (2D) metasurface. The origin of the resulting circular dichroism is rather subtle, and is related to non-radiative (Ohmic) dissipation of the constituent metamolecules. Because such dissipation occurs on a nanoscale, this effect has never been experimentally probed and visualized. Using a suite of recently developed nanoscale-measurement tools, we establish that the circular dichroism in a nanostructured metasurface occurs due to handedness-dependent Ohmic heating. |
| publisher |
Nature Publishing Group |
| publishDate |
2016 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4917967/ |
| _version_ |
1613598539158388736 |