Advantages of microsphere-assisted super-resolution imaging technique over solid immersion lens and confocal microscopies

被引：199

作者：

Darafsheh, Arash ^{[1
]}

Limberopoulos, Nicholaos I. ^{[2
]}

Derov, John S. ^{[2
]}

Walker, Dennis E., Jr. ^{[2
]}

Astratov, Vasily N. ^{[1
,2
]}

机构：

[1] Univ N Carolina, Ctr Optoelect & Opt Commun, Dept Phys & Opt Sci, Charlotte, NC 28223 USA

[2] Air Force Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 06期

基金：

美国国家科学基金会;

关键词：

DIELECTRIC MICROSPHERE; PHOTONIC NANOJETS; OPTICAL NANOSCOPY; FIELD; RESOLUTION; BACKSCATTERING; NANOPARTICLES; MICROLENS; SYSTEMS; LIGHT;

D O I：

10.1063/1.4864760

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate a series of advantages of microsphere-assisted imaging over confocal and solid immersion lens microscopies including intrinsic flexibility, better resolution, higher magnification, and longer working distances. We discerned minimal feature sizes of similar to 50-60 nm in nanoplasmonic arrays at the illumination wavelength lambda = 405 nm. It is demonstrated that liquid-immersed, high-index (n similar to 1.9-2.1) spheres provide a superior image quality compared to that obtained by spheres with the same index contrast in an air environment. We estimate that using transparent microspheres at deep UV wavelengths of similar to 200 nm might make possible imaging of various nanostructures with extraordinary high similar to 30 nm resolution. (C) 2014 AIP Publishing LLC.

引用

页数：4

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