Characterizing optical properties of self-assembled gold nanoparticles for surface plasmon resonance device applications

Hsuen Li Chen, Hsu Chun Cheng, Tsung Shine Ko, Shang Yu Chuang, Tien Chi Chu

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this study, the optical constants of gold nanoparticles are evaluated for surface plasmon-based sensor applications. Using an effective medium approximation (EMA) and ellipsometry, approaches to monitor the self-assembly of gold nanoparticles are also demonstrated. Spectroscopic ellipsometric parameters measured (tan Ψ, cos Δ) before and after adding gold nanoparticles to a substrate are used to calculate the optical constants of gold nanoparticles. The film thickness is measured by grazing incidence X-ray reflectivity (XRR). The optical constants (refractive index, extinction coefficient) of gold nanoparticles can be obtained from the measured ellipsometric parameters and thickness. We also show that particles density can be well predicted and detected nondestructively by this method.

Original languageEnglish
Pages (from-to)6984-6986
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number9 A
DOIs
Publication statusPublished - 2006 Sep 7

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Surface plasmon resonance
surface plasmon resonance
Optical properties
Gold
Optical constants
gold
Nanoparticles
optical properties
nanoparticles
Light extinction
Ellipsometry
grazing incidence
Self assembly
ellipsometry
Film thickness
self assembly
Refractive index
extinction
film thickness
refractivity

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

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Characterizing optical properties of self-assembled gold nanoparticles for surface plasmon resonance device applications. / Chen, Hsuen Li; Cheng, Hsu Chun; Ko, Tsung Shine; Chuang, Shang Yu; Chu, Tien Chi.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 45, No. 9 A, 07.09.2006, p. 6984-6986.

Research output: Contribution to journalArticle

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