Abstract
The optical properties of silver nanoparticle arrays are studied by T-matrix and discrete dipole approximation (DDA) methods. Arrays of spherical silver particles with a radius of 30 nm are investigated with particular emphasis on the influence of array disorder on optical response. We find that the dipole peak intensities decrease when the array becomes disordered and the plasmon resonance wavelengths generally exhibit smaller blue shifts compared to perfectly ordered arrays. Using an extended DDA method, we calculate the extinction spectra of ordered nanodisk arrays, examining the variation of plasmon resonance wavelength with interparticle spacing (at fixed particle size). The calculated blue shift of the plasmon wavelength with decreasing interparticle spacing is found to be in excellent agreement with recent experiments.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Editors | N.J. Halas |
| Pages | 174-181 |
| Number of pages | 8 |
| Volume | 5221 |
| DOIs | |
| Publication status | Published - 2003 |
| Event | Plasmonics: Metallic Nanostuctures and Their Optical Properties - San Diego, CA, United States Duration: Aug 3 2003 → Aug 5 2003 |
Other
| Other | Plasmonics: Metallic Nanostuctures and Their Optical Properties |
|---|---|
| Country | United States |
| City | San Diego, CA |
| Period | 8/3/03 → 8/5/03 |
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Keywords
- Array
- Disorder
- Extinction
- Nanoparticle
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
Extinction spectra of silver nanoparticle arrays. / Zou, Shengli; Zhao, Linlin; Schatz, George C.
Proceedings of SPIE - The International Society for Optical Engineering. ed. / N.J. Halas. Vol. 5221 2003. p. 174-181.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Extinction spectra of silver nanoparticle arrays
AU - Zou, Shengli
AU - Zhao, Linlin
AU - Schatz, George C
PY - 2003
Y1 - 2003
N2 - The optical properties of silver nanoparticle arrays are studied by T-matrix and discrete dipole approximation (DDA) methods. Arrays of spherical silver particles with a radius of 30 nm are investigated with particular emphasis on the influence of array disorder on optical response. We find that the dipole peak intensities decrease when the array becomes disordered and the plasmon resonance wavelengths generally exhibit smaller blue shifts compared to perfectly ordered arrays. Using an extended DDA method, we calculate the extinction spectra of ordered nanodisk arrays, examining the variation of plasmon resonance wavelength with interparticle spacing (at fixed particle size). The calculated blue shift of the plasmon wavelength with decreasing interparticle spacing is found to be in excellent agreement with recent experiments.
AB - The optical properties of silver nanoparticle arrays are studied by T-matrix and discrete dipole approximation (DDA) methods. Arrays of spherical silver particles with a radius of 30 nm are investigated with particular emphasis on the influence of array disorder on optical response. We find that the dipole peak intensities decrease when the array becomes disordered and the plasmon resonance wavelengths generally exhibit smaller blue shifts compared to perfectly ordered arrays. Using an extended DDA method, we calculate the extinction spectra of ordered nanodisk arrays, examining the variation of plasmon resonance wavelength with interparticle spacing (at fixed particle size). The calculated blue shift of the plasmon wavelength with decreasing interparticle spacing is found to be in excellent agreement with recent experiments.
KW - Array
KW - Disorder
KW - Extinction
KW - Nanoparticle
UR - http://www.scopus.com/inward/record.url?scp=2342532373&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=2342532373&partnerID=8YFLogxK
U2 - 10.1117/12.503436
DO - 10.1117/12.503436
M3 - Conference contribution
AN - SCOPUS:2342532373
VL - 5221
SP - 174
EP - 181
BT - Proceedings of SPIE - The International Society for Optical Engineering
A2 - Halas, N.J.
ER -