Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: 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.
Formato: Texto
Lenguaje:English
Publicado: Nature Publishing Group 2011
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
_version_ 1782201502285168640
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
work_keys_str_mv AT kehrsc nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling
AT liuym nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling
AT martinlw nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling
AT yup nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling
AT gajekm nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling
AT yangsy nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling
AT yangch nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling
AT wenzelmt nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling
AT jacobr nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling
AT vonribbeckhg nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling
AT helmm nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling
AT zhangx nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling
AT englm nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling
AT rameshr nearfieldexaminationofperovskitebasedsuperlensesandsuperlensenhancedprobeobjectcoupling