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|Title:||Far-field superoscillatory metamaterial superlens||Authors:||Yuan, Guanghui
Rogers, Katrine S.
Rogers, Edward T. F.
Zheludev, Nikolay I.
|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.||URI:||https://hdl.handle.net/10356/88506
|DOI:||http://dx.doi.org/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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