A simulation study of plasmonic resonance in nanosandwich structures of noble metals in optical range

Soad Alsheheri

doi:10.1117/12.2322583

19 September 2018 A simulation study of plasmonic resonance in nanosandwich structures of noble metals in optical range

Soad Alsheheri

Proceedings Volume 10722, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVI; 107222Y (2018) https://doi.org/10.1117/12.2322583
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States

Abstract

Plasmonic nanoprisms with and without truncation in the form of Au-dielectric- Au and Ag-dielectric- Ag sandwich structures have been simulated using finite-difference time-domain (FDTD) simulation technique. Effect of dielectric material thickness on dipole resonance were studied in detail. Truncation introduced a blue shift in dipole resonance for silver and gold sandwich. For ideal gold and silver sandwich, the dipole resonance was not significantly affected for smaller thickness of dielectric material. However, for truncated sandwiches of gold and silver exhibited a gradual red shift with increase in thickness of dielectric layer. To conclude, the thickness of dielectric layer employed in sandwich can be used as a tunable parameter towards exhibition of dipole resonance regardless of gold or silver.

Citation Download Citation

Soad Alsheheri "A simulation study of plasmonic resonance in nanosandwich structures of noble metals in optical range", Proc. SPIE 10722, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVI, 107222Y (19 September 2018); https://doi.org/10.1117/12.2322583

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