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

21 Citations (Scopus)


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
Issue number6
Publication statusPublished - Feb 12 2009


ASJC Scopus subject areas

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

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