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Advantages of microsphere-assisted super-resolution imaging technique over solid immersion lens and confocal microscopies
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10.1063/1.4864760
/content/aip/journal/apl/104/6/10.1063/1.4864760
http://aip.metastore.ingenta.com/content/aip/journal/apl/104/6/10.1063/1.4864760
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Figures

Image of FIG. 1.
FIG. 1.

Schematic of (a) traditional microscopy (not to scale) with an objective lens with maximum half-angle acceptance of . Imaging through (b) h-SIL, (c) s-SIL, and (d) a sphere, by the same objective lens.

Image of FIG. 2.
FIG. 2.

(a) SEM image of a Blu-ray disk. (b) Schematic of the liquid-immersed microsphere-assisted microscopy setup (not to scale). (c) Image of the BD by using a  53 m sphere with  1.51 placed on top of the sample with no liquid. (d) Image of the BD through a  53 m sphere with  2.1 immersed in IPA with  1.37 (/ ∼ 1.53). Peak illumination at ∼ 550 nm and 20×(NA = 0.4) objective lens used in (c,d).

Image of FIG. 3.
FIG. 3.

(a) SEM of the nanoplasmonic sample with 50-60 nm gaps between 100 nm cylinders. (b) Imaging at  = 405 nm through a ∼ 15 m BTG sphere ( ∼ 1.9) immersed in IPA by a 100×(NA = 0.95) objective. (c) Conventional and (d) confocal images at  = 405 nm of the same array by the same objective as in (b). The images have been rescaled to the same size to ease their comparison.

Image of FIG. 4.
FIG. 4.

Middle inset is the SEM image of the 4-cylinder structure with 50-60 nm gaps between 100 nm cylinders. Left and right insets are the microscope images of this structure at λ = 405 nm by a 20×(NA = 0.6) objective through a 2-mm-diameter h-SIL and through a 10 μm BTG sphere immersed in IPA, respectively. The images have been rescaled to the same size. (a,b) Irradiance profiles measured along the dashed lines connecting the centers of the cylinders in the two cases represented by the left and right insets, respectively.

Image of FIG. 5.
FIG. 5.

(a) SEM image of a BD and (b) schematic of the SIL setup. (c-f) Images of the BD sample through 100×(NA = 0.9) objective at  ∼ 550 nm by using h-SILs with  = 2.0, 1.77, 1.51, and 1.458, respectively. (g) Geometrical optics fit to the magnification.

Image of FIG. 6.
FIG. 6.

(a) SEM of the sample. (b and c) Images through a ∼20 m liquid-immersed BTG ( ∼ 1.9) sphere at  ∼ 550 nm by objective lenses with NA = 0.4 and NA = 0.9, respectively. The images have been rescaled to the same size. (d-f) Conventional optical micrographs at  ∼ 550 nm obtained by objective lenses with NA = 0.5, 0.7, and 0.9, respectively.

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/content/aip/journal/apl/104/6/10.1063/1.4864760
2014-02-14
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Advantages of microsphere-assisted super-resolution imaging technique over solid immersion lens and confocal microscopies
http://aip.metastore.ingenta.com/content/aip/journal/apl/104/6/10.1063/1.4864760
10.1063/1.4864760
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