Tuning the thickness and orientation of single au pyramids for improved refractive index sensitivities

Jeunghoon Lee, Warefta Hasan, Teri W Odom

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

This paper describes three ways to tune the multipolar surface plasmon resonances of Au pyramidal particles: (1) by varying their thickness; (2) by controlling their relative orientation on a surface; and (3) by changing the refractive index of the surrounding media. We found that as the index of the medium was increased that the plasmon resonances red-shifted linearly from visible to near-infrared wavelengths. By screening the different geometric parameters, we found that 25-nm thick pyramids in a tip-up orientation produced the largest refractive index sensitivities.

Original languageEnglish
Pages (from-to)2205-2207
Number of pages3
JournalJournal of Physical Chemistry C
Volume113
Issue number6
DOIs
Publication statusPublished - Feb 12 2009

Fingerprint

pyramids
Refractive index
Tuning
tuning
refractivity
sensitivity
Surface plasmon resonance
surface plasmon resonance
Screening
screening
Infrared radiation
Wavelength
wavelengths

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Tuning the thickness and orientation of single au pyramids for improved refractive index sensitivities. / Lee, Jeunghoon; Hasan, Warefta; Odom, Teri W.

In: Journal of Physical Chemistry C, Vol. 113, No. 6, 12.02.2009, p. 2205-2207.

Research output: Contribution to journalArticle

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