Extraordinary transmission-based super-resolved axial imaging using subwavelength metallic nanoaperture arrays

Wonju Lee; Youngjin Oh; Jong-Ryul Choi; Kyujung Kim; Donghyun Kim

doi:10.1117/12.2078053

19 March 2015 Extraordinary transmission-based super-resolved axial imaging using subwavelength metallic nanoaperture arrays

Wonju Lee, Youngjin Oh, Jong-Ryul Choi, Kyujung Kim, Donghyun Kim

Author Affiliations +

Proceedings Volume 9337, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XII; 93370A (2015) https://doi.org/10.1117/12.2078053
Event: SPIE BiOS, 2015, San Francisco, California, United States

Abstract

A super-resolved axial imaging technique was investigated based on extraordinary transmission (EOT) of light using metallic gradient nanoaperture arrays. Light through subwavelength nanoapertures at thick metal film can be transmitted and amplified by several orders of magnitude due to plasmonic coupling. Here, the feasibility of EOT-based axial imaging with super resolution is explored. Since light penetration of EOT is much deeper than that of evanescent waves, the axial range to obtain the distance information of fluorescence signals can be extended by EOT. The axial distribution of ganglioside in mouse macrophage cells was measured with sub-diffraction-limited resolution after reconstruction using differential fluorescence excitation on gradient aperture arrays.

Citation Download Citation

Wonju Lee, Youngjin Oh, Jong-Ryul Choi, Kyujung Kim, and Donghyun Kim "Extraordinary transmission-based super-resolved axial imaging using subwavelength metallic nanoaperture arrays", Proc. SPIE 9337, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XII, 93370A (19 March 2015); https://doi.org/10.1117/12.2078053

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