Optical properties of metal nanoshells

Encai Hao, Shuyou Li, Ryan C. Bailey, Shengli Zou, George C Schatz, Joseph T Hupp

Research output: Contribution to journalArticle

279 Citations (Scopus)

Abstract

We present a combination of theory and experiment designed to elucidate the properties of gold nanoshells, Wet chemistry methods are used to prepare the nanoshells, and transmission electron microscopy (TEM) analysis is used to characterize the shell structure, demonstrating the presence of pinholes in the shells. Both Mie theory and the discrete dipole approximation (a numerical method) are used to characterize the electrodynamics of the shell structures, including both perfect and pinhole defected shells. The calculations show that 2-5 nm pinholes have only a small effect on the extinction spectra; however, they lead to local electric fields that are enhanced by a factor of 3-4 close to the plasmon maximum. This makes metal nanoshells (with holes) attractive materials for surface enhanced Raman spectroscopy applications.

Original languageEnglish
Pages (from-to)1224-1229
Number of pages6
JournalJournal of Physical Chemistry B
Volume108
Issue number4
Publication statusPublished - Jan 29 2004

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Nanoshells
pinholes
Optical properties
Metals
optical properties
metals
Electrodynamics
Mie scattering
electrodynamics
Gold
Raman spectroscopy
Numerical methods
extinction
Electric fields
chemistry
gold
dipoles
Transmission electron microscopy
transmission electron microscopy
electric fields

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Hao, E., Li, S., Bailey, R. C., Zou, S., Schatz, G. C., & Hupp, J. T. (2004). Optical properties of metal nanoshells. Journal of Physical Chemistry B, 108(4), 1224-1229.

Optical properties of metal nanoshells. / Hao, Encai; Li, Shuyou; Bailey, Ryan C.; Zou, Shengli; Schatz, George C; Hupp, Joseph T.

In: Journal of Physical Chemistry B, Vol. 108, No. 4, 29.01.2004, p. 1224-1229.

Research output: Contribution to journalArticle

Hao, E, Li, S, Bailey, RC, Zou, S, Schatz, GC & Hupp, JT 2004, 'Optical properties of metal nanoshells', Journal of Physical Chemistry B, vol. 108, no. 4, pp. 1224-1229.
Hao E, Li S, Bailey RC, Zou S, Schatz GC, Hupp JT. Optical properties of metal nanoshells. Journal of Physical Chemistry B. 2004 Jan 29;108(4):1224-1229.
Hao, Encai ; Li, Shuyou ; Bailey, Ryan C. ; Zou, Shengli ; Schatz, George C ; Hupp, Joseph T. / Optical properties of metal nanoshells. In: Journal of Physical Chemistry B. 2004 ; Vol. 108, No. 4. pp. 1224-1229.
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