Chalcogenide plasmonic-like materials

Robert E. Simpson; Nur Qalishah Adanan; Yunzheng Wang; Thomas Knight; Zhaogang Dong

doi:10.1117/12.3028868

3 October 2024 Chalcogenide plasmonic-like materials

Robert E. Simpson, Nur Qalishah Adanan, Yunzheng Wang, Thomas Knight, Zhaogang Dong

Author Affiliations +

Proceedings Volume PC13111, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXII; PC131110L (2024) https://doi.org/10.1117/12.3028868
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

I will introduce two very different chalcogenide thin films that exhibit plasmonic or plasmonic-like behaviour in the visible spectrum. The first film is elemental tellurium and we argue that this plasmonic-like behaviour is due to partially delocalised p-orbital electrons that are readily polarized at frequencies in the visible spectrum.The Te films can support surface plasmon polariton-like modes and Te nanodiscs can support local surface plasmon resonances.We believe these results might pave the way for elemental Te-programmable photonics. I will also show how chalcogenide films can be used to grow silver nanoparticles over large areas. In particular, I will show how co-depositing Sb2S3 with Ag results in a perfect absorber material consiting of self-organised nanoresonators. We call this material Black Silver, and we have used it to detect femtomolar concentrations of streptavidin.

Conference Presentation

Citation Download Citation

Robert E. Simpson, Nur Qalishah Adanan, Yunzheng Wang, Thomas Knight, and Zhaogang Dong "Chalcogenide plasmonic-like materials", Proc. SPIE PC13111, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXII, PC131110L (3 October 2024); https://doi.org/10.1117/12.3028868

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