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Plasmonic response of metallic nanoparticles embedded in glass and a-Si
Volume 45 Published: 5 December 2022 Article ID 0241
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Fulltext
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Permanent link:
https://www.ias.ac.in/article/fulltext/boms/045/0241 -
Keywords
Plasmonics ;nanoparticles ;FEM ;embedding ;optics. -
Abstract
The optical properties of nanoparticle (NP) metals displaying the highest plasmonic response (silver, gold, copper and aluminium) are simulated. Embedding the metal NPs in a dielectric medium provides prevention from agglomeration, increased absorption and protection from environmental effects. Hence, embedding is an effective method to improve the performance of plasmonic-based devices. The NPs of the aforementioned metals were simulated in air, glass and a-Si environment from the ultraviolet to the near-infrared range. Spheres, nanobars and nanoprisms of volume equal to spheres of diameter 50–200 nm were studied in a broad wavelength range of 200–1800 nm. The effect of the material, size, shape and environment was observed quantitatively by analysing the peak shifts of the dipole and higherorder poles. The highest extent of peak shift due to change in size and surrounding environment was for aluminium, followed by silver, gold and copper.
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Author Affiliations
GAURAV PAL SINGH NEHA SARDANA1
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Ropar, Rupnagar 140001, India
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Dates
- Published
- 5 December 2022
- Manuscript received
- 6 May 2022
- Accepted
- 25 July 2022
- Final version published online
- 5 December 2022
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Supplementary Material
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Bulletin of Materials Science
Volume 46, 2023
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