Native fluorescence enhancement using an Aluminum bowtie nano-antenna

Xueling Cheng; Miguel Rodriguez; Yunshan Wang

doi:10.1117/12.2568826

31 August 2020 Native fluorescence enhancement using an Aluminum bowtie nano-antenna

Xueling Cheng, Miguel Rodriguez, Yunshan Wang

Proceedings Volume 11466, UV and Higher Energy Photonics: From Materials to Applications 2020; 114660E (2020) https://doi.org/10.1117/12.2568826
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Abstract

Ultraviolet (UV) plasmonic nanostructures hold promises in enabling label-free sensing of biomolecules using their native fluorescence. Several UV plasmonic structures have been explored to enhance native fluorescence of biomolecules, including metallic thin film, particle array, hole array using aluminum, magnesium, indium, etc. However, the enhancement factor of them is quite small, with less than 80 times for nucleic acids and less than 15 times for amino acids. In order to achieve higher enhancement factor, we study a bowtie nano-antenna (BNA) made of aluminum (Al) in the ultraviolet region. The effect of the native oxide layer on Al is also investigated. The numerical simulation has shown 1026x net enhancement with the optimal geometry.

Conference Presentation

Citation Download Citation

Xueling Cheng, Miguel Rodriguez, and Yunshan Wang "Native fluorescence enhancement using an Aluminum bowtie nano-antenna", Proc. SPIE 11466, UV and Higher Energy Photonics: From Materials to Applications 2020, 114660E (31 August 2020); https://doi.org/10.1117/12.2568826

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