Efficient modulation of subwavelength focusing via meta-aperture-based plasmonic lens for multifunction applications.

Kai-Hao Chang, Yen-Chun Chen, Wen-Hao Chang, Po-Tsung Lee

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Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

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1 citing paper in PubMed.

Microscale Diffractive Lenses Integrated into Microfluidic Devices for Size-Selective Optical Trapping of Particles.Analytical chemistry · 2024
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4 authors.

Kai-Hao ChangDepartment of Photonics, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu, 300, Taiwan.ORCID http://orcid.org/0000-0002-8700-3479

Yen-Chun ChenDepartment of Electrophysics, College of Science, National Chiao Tung University, Hsinchu, 300, Taiwan.

Wen-Hao ChangDepartment of Electrophysics, College of Science, National Chiao Tung University, Hsinchu, 300, Taiwan.ORCID http://orcid.org/0000-0003-4880-6006

Po-Tsung LeeDepartment of Photonics, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu, 300, Taiwan. potsung@mail.nctu.edu.tw.ORCID http://orcid.org/0000-0003-4116-3781

Funding

Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan) 103-2221-E-009-096-MY3Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan) 106-2221-E-009-123-MY3

6 · The paper itself

Abstract

Subwavelength focusing is crucial for many applications in photonics including super-resolution micro/nanoscopy, nanolithography, and optical trapping. However, most nanostructures exhibit poor ability to modulate focusing spot, which makes them hard to achieve ultra-small resolution. Here, we propose three kinds of plasmonic lens (PL) by utilizing different meta-aperture designs for efficient subwavelength focusing modulation. The shape of nanoaperture strongly influences the diffraction properties. Spatial modulation of focusing spot by employing a circular array of proposed nanoapertures is explored. The best focusing performance among these PLs is the design of T-shape nanoaperture, which has great resolution achieving ultra-small focusing spot of 0.14 λ

Identifiers

PMID30206269

DOI10.1038/s41598-018-31860-1

PMCPMC6134010

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