Far-field superoscillatory metamaterial superlens
We demonstrate a metamaterial superlens: a planar array of discrete subwavelength metamolecules with individual scattering characteristics tailored to vary spatially to create subdiffraction superoscillatory focus of, in principle, arbitrary shape and size. Metamaterial free-space lenses with previo...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2019
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| Online Access: | https://hdl.handle.net/10356/88506 http://hdl.handle.net/10220/49311 |
| _version_ | 1826127034529611776 |
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| author | Yuan, Guanghui Rogers, Katrine S. Rogers, Edward T. F. Zheludev, Nikolay I. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Yuan, Guanghui Rogers, Katrine S. Rogers, Edward T. F. Zheludev, Nikolay I. |
| author_sort | Yuan, Guanghui |
| collection | NTU |
| description | We demonstrate a metamaterial superlens: a planar array of discrete subwavelength metamolecules with individual scattering characteristics tailored to vary spatially to create subdiffraction superoscillatory focus of, in principle, arbitrary shape and size. Metamaterial free-space lenses with previously unattainable effective numerical apertures – as high as 1.52 – and foci as small as 0.33λ in size are demonstrated. Super-resolution imaging with such lenses is experimentally verified breaking the conventional diffraction limit of resolution and exhibiting resolution close to the size of the focus. Our approach will enable far-field label-free super-resolution nonalgorithmic microscopies at harmless levels of intensity, including imaging inside cells, nanostructures, and silicon chips, without impregnating them with fluorescent materials. |
| first_indexed | 2024-10-01T07:02:09Z |
| format | Journal Article |
| id | ntu-10356/88506 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:02:09Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/885062023-02-28T19:25:59Z Far-field superoscillatory metamaterial superlens Yuan, Guanghui Rogers, Katrine S. Rogers, Edward T. F. Zheludev, Nikolay I. School of Physical and Mathematical Sciences The Photonics Institute Centre for Disruptive Photonic Technologies (CDPT) Science::Physics Optics Metamaterials We demonstrate a metamaterial superlens: a planar array of discrete subwavelength metamolecules with individual scattering characteristics tailored to vary spatially to create subdiffraction superoscillatory focus of, in principle, arbitrary shape and size. Metamaterial free-space lenses with previously unattainable effective numerical apertures – as high as 1.52 – and foci as small as 0.33λ in size are demonstrated. Super-resolution imaging with such lenses is experimentally verified breaking the conventional diffraction limit of resolution and exhibiting resolution close to the size of the focus. Our approach will enable far-field label-free super-resolution nonalgorithmic microscopies at harmless levels of intensity, including imaging inside cells, nanostructures, and silicon chips, without impregnating them with fluorescent materials. ASTAR (Agency for Sci., Tech. and Research, S’pore) MOE (Min. of Education, S’pore) Published version 2019-07-12T01:59:32Z 2019-12-06T17:04:45Z 2019-07-12T01:59:32Z 2019-12-06T17:04:45Z 2019 Journal Article Yuan, G., Rogers, K. S., Rogers, E. T. F., & Zheludev, N. I. (2019). Far-field superoscillatory metamaterial superlens. Physical Review Applied, 11(6), 064016-. doi:10.1103/PhysRevApplied.11.064016 https://hdl.handle.net/10356/88506 http://hdl.handle.net/10220/49311 10.1103/PhysRevApplied.11.064016 en Physical Review Applied © 2019 American Physical Society. All rights reserved. This paper was published in Physical Review Applied and is made available with permission of American Physical Society. 10 p. application/pdf |
| spellingShingle | Science::Physics Optics Metamaterials Yuan, Guanghui Rogers, Katrine S. Rogers, Edward T. F. Zheludev, Nikolay I. Far-field superoscillatory metamaterial superlens |
| title | Far-field superoscillatory metamaterial superlens |
| title_full | Far-field superoscillatory metamaterial superlens |
| title_fullStr | Far-field superoscillatory metamaterial superlens |
| title_full_unstemmed | Far-field superoscillatory metamaterial superlens |
| title_short | Far-field superoscillatory metamaterial superlens |
| title_sort | far field superoscillatory metamaterial superlens |
| topic | Science::Physics Optics Metamaterials |
| url | https://hdl.handle.net/10356/88506 http://hdl.handle.net/10220/49311 |
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