Ellipsometric studies of optical properties of local surface plasmon resonance for au nanoparticles on the substrate

Yen-Hsun Su, Shih-hui Chang, Lay GaikTeoh, Henglung Tu, Mm Hsiung Hon

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8 Citations (Scopus)

Abstract

Few ellipsometric studies have been conducted on Au self-assembled monolayers (SAM), with large discrepancies obtained for refractive index values. Because the Au NPs layer is a kind of composite layer, Au NPs and void, the effective media approximate (EMA) model was employed to investigate the optical properties of Au NPs. The reflective coefficient ('-.'l .2) was smaller than the extinction coefficient ('-'2.5), which is different from the previous reports and corresponds to the Drude model. The absorption peak of surface plasmon resonance for Au NPs on the glass substrate was shifted from 580 nm to 480 nm.

Original languageEnglish
Pages (from-to)1181-1184
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume9
Issue number2
DOIs
Publication statusPublished - 2009 Feb 1

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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