A smooth optical superlens

Chaturvedi, Pratik; Wu, Wei; Logeeswaran, V. J.; Yu, Zhaoning; Islam, Maidul; Wang, Shih-Yuan; Williams, R. Stanley; Fang, Nicholas X.

doi:10.1063/1.3293448

Cited by 83 publications

(57 citation statements)

References 14 publications

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“…More recently, Jeppesen et al [68] have integrated a thin film Ag superlens into a lab-on-a-chip platform. Chaturvedi et al [69] made essential progress in the fabrication of the thin films that need to be smooth and continuous while conventional fabrication processes tend to deliver films consisting of islands. They used a 1 nm thick Ge wetting layer onto which they succeeded to deposit a smooth 30 nm thick Ag layer.…”

Section: Negative Refraction and Sub-wavelength Resolution Imaging Anmentioning

confidence: 99%

3D THz metamaterials from micro/nanomanufacturing

Moser

Rockstuhl

2011

Laser & Photonics Reviews

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Metamaterials are engineered composite materials offering unprecedented control of wave propagation. Despite their complexity, effective properties can frequently be extracted by conceptualizing them as homogeneous and isotropic media with dispersive electric permittivity and magnetic permeability. For an ideal isotropic medium, strong dispersion in these properties causes wave and field vectors to form a left-handed (E,H,k)-frame involving backward waves, and offering control of quantities like the refractive index which may become negative. Experimental evidence exists from microwaves to the visible. Applications include sub-wavelength-resolution imaging, invisibility cloaking, plasmonics-based lasers, metananocircuits, and omnidirectional absorbers. As the engineered sub-structures must be smaller than their design wavelength, micro/nanomanufacturing is exploited from primary pattern generation over lithography to templating and molecular beam epitaxy. 3D metamaterials have been made by stacking of layers, multilayer structuring, and 3D primary pattern generation. Theory shows that full properties may build up over one or a very few layers.

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Section: Negative Refraction and Sub-wavelength Resolution Imaging Anmentioning

confidence: 99%

3D THz metamaterials from micro/nanomanufacturing

Moser

Rockstuhl

2011

Laser & Photonics Reviews

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“…So far, many approaches of imaging beyond the diffraction limit with superlens have been reported [13][14][15][16][17][18]. The performance limit of the metallic superlens was associated with the intrinsic losses of metal.…”

Section: Introductionmentioning

confidence: 99%

Reflectivity and Phase Control Research for Superresolution Enhancement via the Thin Films Mismatch

Cao¹,

Cheng²,

Li³

et al. 2010

PIER

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Abstract-In this work, based on the principle of the electromagnetic reflection and transmission, we first present a theoretical analysis of a super-resolving lens with anti-reflection and phase control coatings (ARPC). This ARPC is capable of reducing the reflectivity of superlens surface and making phase difference approaching zero. The principle of ARPC is discussed in detail and the engineer condition for super-resolution imaging is obtained and the best range of the permittivity of ARPC coatings is obtained. The results demonstrate that the subwavelength resolution of our lens with ARPC has been enhanced. Such remarkable imaging capability using ARPC promises new potential for nanoscale imaging and lithography.

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“…Pendry found that if the refractive index of a layer is exactly minus one, it can act as a perfect lens which has the ability to recover, in principle, all the subwavelength information of an object in the image domain [9]. This pioneering work has encouraged immense amounts of research to theoretically design [10][11][12][13][14][15][16][17][18][19][20][21][22][23] or experimentally fabricate [24][25][26][27][28][29][30] a super resolution imaging system. Although many well known experiments have made progress in trying to realize a superlens and some encouraging results have been reported, the main obstacle for the superlens to be applied to real application is that fabrication issues remain a challenge.…”

Section: Introductionmentioning

confidence: 99%

Covered Image of Superlens

Zhang¹,

Fiddy²

2013

PIER

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Abstract-In this paper, we examine the imaging ability of a planar superlens in both the transverse and vertical dimension. By studying the field patterns of the image from different objects (points and scattering surfaces with subwavelength details) in front of a planar superlens, we show the relation between the transverse and vertical resolutions. We mainly discuss why we cannot get high subwavelength resolution for three dimensions at the same time, and there is a tradeoff between the transverse and vertical resolution capabilities which is fundamental in nature for a planar superlens.

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A smooth optical superlens

Cited by 83 publications

References 14 publications

3D THz metamaterials from micro/nanomanufacturing

3D THz metamaterials from micro/nanomanufacturing

Reflectivity and Phase Control Research for Superresolution Enhancement via the Thin Films Mismatch

Covered Image of Superlens

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