Design and analysis of a hollow bowtie nanoantenna

Parul Goyal; Nishant Shankhwar; Yogita Kalra

doi:10.1117/12.2320917

26 September 2018 Design and analysis of a hollow bowtie nanoantenna

Parul Goyal, Nishant Shankhwar, Yogita Kalra

Proceedings Volume 10722, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVI; 107222M (2018) https://doi.org/10.1117/12.2320917
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States

Abstract

In this paper, a pair of hollow bow-tie nanoantenna with a feed gap has been designed using gold in the visible frequency range. This nanoantenna exhibits a strong field enhancement in the feed gap region at the resonance wavelength due to the localized surface plasmon. The absorption cross-section of this nanoantenna has been compared with the solid bowtie nanoantenna and it has been observed that the absorption cross section in hollow bowtie nanoantenna is less as compared to solid bowtie nanoantenna. This is because of the less volume availability for light absorption in the hollow bowtie nanoantenna. So, the main reason of using a hollow bowtie over a solid bowtie is the reduced absorption cross-section. Further, properties of hollow bowtie nanoantenna have been enhanced by geometric optimization using COMSOL Multiphysics software.

Citation Download Citation

Parul Goyal, Nishant Shankhwar, and Yogita Kalra "Design and analysis of a hollow bowtie nanoantenna", Proc. SPIE 10722, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVI, 107222M (26 September 2018); https://doi.org/10.1117/12.2320917

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