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Near-field examination of perovskite-based superlenses and superlens-enhanced probe-object coupling
A planar slab of negative-index material works as a superlens with sub-diffraction-limited resolution, as propagating waves are focused and, moreover, evanescent waves are reconstructed in the image plane. Here we demonstrate a superlens for electric evanescent fields with low losses using perovskit...
Autores principales: | , , , , , , , , , , , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3072079/ https://www.ncbi.nlm.nih.gov/pubmed/21427720 http://dx.doi.org/10.1038/ncomms1249 |
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author | Kehr, S.C. Liu, Y.M. Martin, L.W. Yu, P. Gajek, M. Yang, S.-Y. Yang, C.-H. Wenzel, M.T. Jacob, R. von Ribbeck, H.-G. Helm, M. Zhang, X. Eng, L.M. Ramesh, R. |
author_facet | Kehr, S.C. Liu, Y.M. Martin, L.W. Yu, P. Gajek, M. Yang, S.-Y. Yang, C.-H. Wenzel, M.T. Jacob, R. von Ribbeck, H.-G. Helm, M. Zhang, X. Eng, L.M. Ramesh, R. |
author_sort | Kehr, S.C. |
collection | PubMed |
description | A planar slab of negative-index material works as a superlens with sub-diffraction-limited resolution, as propagating waves are focused and, moreover, evanescent waves are reconstructed in the image plane. Here we demonstrate a superlens for electric evanescent fields with low losses using perovskites in the mid-infrared regime. The combination of near-field microscopy with a tunable free-electron laser allows us to address precisely the polariton modes, which are critical for super-resolution imaging. We spectrally study the lateral and vertical distributions of evanescent waves around the image plane of such a lens, and achieve imaging resolution of λ/14 at the superlensing wavelength. Interestingly, at certain distances between the probe and sample surface, we observe a maximum of these evanescent fields. Comparisons with numerical simulations indicate that this maximum originates from an enhanced coupling between probe and object, which might be applicable for multifunctional circuits, infrared spectroscopy and thermal sensors. |
format | Text |
id | pubmed-3072079 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-30720792011-04-20 Near-field examination of perovskite-based superlenses and superlens-enhanced probe-object coupling Kehr, S.C. Liu, Y.M. Martin, L.W. Yu, P. Gajek, M. Yang, S.-Y. Yang, C.-H. Wenzel, M.T. Jacob, R. von Ribbeck, H.-G. Helm, M. Zhang, X. Eng, L.M. Ramesh, R. Nat Commun Article A planar slab of negative-index material works as a superlens with sub-diffraction-limited resolution, as propagating waves are focused and, moreover, evanescent waves are reconstructed in the image plane. Here we demonstrate a superlens for electric evanescent fields with low losses using perovskites in the mid-infrared regime. The combination of near-field microscopy with a tunable free-electron laser allows us to address precisely the polariton modes, which are critical for super-resolution imaging. We spectrally study the lateral and vertical distributions of evanescent waves around the image plane of such a lens, and achieve imaging resolution of λ/14 at the superlensing wavelength. Interestingly, at certain distances between the probe and sample surface, we observe a maximum of these evanescent fields. Comparisons with numerical simulations indicate that this maximum originates from an enhanced coupling between probe and object, which might be applicable for multifunctional circuits, infrared spectroscopy and thermal sensors. Nature Publishing Group 2011-03-22 /pmc/articles/PMC3072079/ /pubmed/21427720 http://dx.doi.org/10.1038/ncomms1249 Text en Copyright © 2011, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by-nc-sa/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ |
spellingShingle | Article Kehr, S.C. Liu, Y.M. Martin, L.W. Yu, P. Gajek, M. Yang, S.-Y. Yang, C.-H. Wenzel, M.T. Jacob, R. von Ribbeck, H.-G. Helm, M. Zhang, X. Eng, L.M. Ramesh, R. Near-field examination of perovskite-based superlenses and superlens-enhanced probe-object coupling |
title | Near-field examination of perovskite-based superlenses and superlens-enhanced probe-object coupling |
title_full | Near-field examination of perovskite-based superlenses and superlens-enhanced probe-object coupling |
title_fullStr | Near-field examination of perovskite-based superlenses and superlens-enhanced probe-object coupling |
title_full_unstemmed | Near-field examination of perovskite-based superlenses and superlens-enhanced probe-object coupling |
title_short | Near-field examination of perovskite-based superlenses and superlens-enhanced probe-object coupling |
title_sort | near-field examination of perovskite-based superlenses and superlens-enhanced probe-object coupling |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3072079/ https://www.ncbi.nlm.nih.gov/pubmed/21427720 http://dx.doi.org/10.1038/ncomms1249 |
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