Electromagnetic Near-Field Nanoantennas for Subdiffraction-Limited Surface Plasmon-Enhanced Light Microscopy

被引：15

作者：

Lee, Wonju ^{[1
]}

Kim, Kyujung ^{[1
]}

Kim, Donghyun ^{[1
]}

机构：

[1] Yonsei Univ, Sch Elect & Elect Engn, Seoul 120749, South Korea

来源：

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS | 2012年 / 18卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

Field localization; imaging resolution; microscopy; nanoantennas; surface plasmon; INTERNAL-REFLECTION FLUORESCENCE; NANO-APERTURES; METAL; RESONANCE; LOCALIZATION; TRANSMISSION; CONFINEMENT; SENSITIVITY; PROTEINS; OPTICS;

D O I：

10.1109/JSTQE.2012.2190046

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We investigate electromagnetically amplified local fields or hot spots created by surface nanoantennas for subdiffraction-limited plasmon-enhanced microscopy under total internal reflection at angled light incidence. Different shapes of near-field hot spots were calculated by varying geometrical parameters of nanoantenna structures. An inverse relationship between full-width-at-half-maximum (FWHM) and ellipticity of a hot spot was found. Among the three patterns considered, square nanoantenna patterns provided the smallest FWHM ellipticity product with a spot size of approximately 53 x 110 nm(2) due to efficient plasmon localization. The size of a nanopattern affects FWHM significantly by producing a smaller hot spot if the size decreases. The effects of other parameters are also discussed.

引用

页码：1684 / 1691

页数：8

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[1] Metal-enhanced fluorescence: an emerging tool in biotechnology [J].