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Metamaterials and Imaging

Title
Metamaterials and Imaging
Authors
Minkyung KimJunsuk Rho
Date Issued
2015-11
Publisher
Springer
Abstract
Resolution of the conventional lens is limited to half the wavelength of the light source by diffraction. In the conventional optical system, evanescent waves, which carry sub-diffraction spatial information, has exponentially decaying amplitude and therefore cannot reach to the image plane. New optical materials called metamaterials have provided new ways to overcome diffraction limit in imaging by controlling the evanescent waves. Such extraordinary electromagnetic properties can be achieved and controlled through arranging nanoscale building blocks appropriately. Here, we review metamaterial-based lenses which offer the new types of imaging components and functions. Perfect lens, superlenses, hyperlenses, metalenses, flat lenses based on metasurfaces, and non-optical lenses including acoustic hyperlens are described. Not all of them offer sub-diffraction imaging, but they provide new imaging mechanisms by controlling and manipulating the path of light. The underlying physics, design principles, recent advances, major limitations and challenges for the practical applications are discussed in this review.
URI
https://oasis.postech.ac.kr/handle/2014.oak/29875
DOI
10.1186/S40580-015-0053-7
ISSN
2196-5404
Article Type
Article
Citation
NANO CONVERGENCE, vol. 2, no. 22, page. 1 - 16, 2015-11
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노준석RHO, JUNSUK
Dept of Mechanical Enginrg
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