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Directionally hiding objects and creating illusions above a carpet-like device by reflection holography

Realization of a perfect invisibility cloak still challenges the current fabricating technologies. Most experiments, if not all, are hence focused on carpet cloaks because of their relatively low requirements to material properties. Nevertheless, present invisibility carpets are used to hide beneath...

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Detalles Bibliográficos
Autores principales: Cheng, Qiluan, Wu, Kedi, Shi, Yile, Wang, Hui, Wang, Guo Ping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4341210/
https://www.ncbi.nlm.nih.gov/pubmed/25716451
http://dx.doi.org/10.1038/srep08581
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author Cheng, Qiluan
Wu, Kedi
Shi, Yile
Wang, Hui
Wang, Guo Ping
author_facet Cheng, Qiluan
Wu, Kedi
Shi, Yile
Wang, Hui
Wang, Guo Ping
author_sort Cheng, Qiluan
collection PubMed
description Realization of a perfect invisibility cloak still challenges the current fabricating technologies. Most experiments, if not all, are hence focused on carpet cloaks because of their relatively low requirements to material properties. Nevertheless, present invisibility carpets are used to hide beneath objects. Here, we report a carpet-like device to directionally conceal objects and further to create illusions above it. The device is fabricated through recording a reflection hologram of objects and is used to produce a time-reversed signal to compensate for the information of the objects and further to create light field of another object so as to realize both functions of hiding the objects and creating illusions, respectively. The carpet-like device can work for macroscopic objects at visible wavelength as the distance between objects and device is at decimeter scale. Our carpet-like device to realizing invisibility and creating illusions may provide a robust way for crucial applications of magic camouflaging and anti-detection etc.
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spelling pubmed-43412102015-03-04 Directionally hiding objects and creating illusions above a carpet-like device by reflection holography Cheng, Qiluan Wu, Kedi Shi, Yile Wang, Hui Wang, Guo Ping Sci Rep Article Realization of a perfect invisibility cloak still challenges the current fabricating technologies. Most experiments, if not all, are hence focused on carpet cloaks because of their relatively low requirements to material properties. Nevertheless, present invisibility carpets are used to hide beneath objects. Here, we report a carpet-like device to directionally conceal objects and further to create illusions above it. The device is fabricated through recording a reflection hologram of objects and is used to produce a time-reversed signal to compensate for the information of the objects and further to create light field of another object so as to realize both functions of hiding the objects and creating illusions, respectively. The carpet-like device can work for macroscopic objects at visible wavelength as the distance between objects and device is at decimeter scale. Our carpet-like device to realizing invisibility and creating illusions may provide a robust way for crucial applications of magic camouflaging and anti-detection etc. Nature Publishing Group 2015-02-26 /pmc/articles/PMC4341210/ /pubmed/25716451 http://dx.doi.org/10.1038/srep08581 Text en Copyright © 2015, 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 in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Cheng, Qiluan
Wu, Kedi
Shi, Yile
Wang, Hui
Wang, Guo Ping
Directionally hiding objects and creating illusions above a carpet-like device by reflection holography
title Directionally hiding objects and creating illusions above a carpet-like device by reflection holography
title_full Directionally hiding objects and creating illusions above a carpet-like device by reflection holography
title_fullStr Directionally hiding objects and creating illusions above a carpet-like device by reflection holography
title_full_unstemmed Directionally hiding objects and creating illusions above a carpet-like device by reflection holography
title_short Directionally hiding objects and creating illusions above a carpet-like device by reflection holography
title_sort directionally hiding objects and creating illusions above a carpet-like device by reflection holography
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4341210/
https://www.ncbi.nlm.nih.gov/pubmed/25716451
http://dx.doi.org/10.1038/srep08581
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