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Title: Far-field superoscillatory metamaterial superlens
Authors: Yuan, Guanghui
Rogers, Katrine S.
Rogers, Edward T. F.
Zheludev, Nikolay I.
Keywords: Science::Physics
Issue Date: 2019
Source: 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
Series/Report no.: Physical Review Applied
Abstract: 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.
DOI: 10.1103/PhysRevApplied.11.064016
Rights: © 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.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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