Abstract
This paper reports the fabrication and characterization of three-dimensional (3D) multiscale Au particles with different aspect ratios. Increasing the length of the particles resulted in excitation of a longitudinal mode and two different transverse modes having different multipolar orders. The multipolar orders increased for both longitudinal and transverse modes as the aspect ratio increased. Finite-difference time-domain calculations revealed that the structural asymmetry of the 3D anisotropic particles were the reason for the two distinct transverse plasmon resonances. When the 3D structural change occurred at the ends of the multiscale particle, however, the optical response showed two resonances in the longitudinal direction and only a single resonance in the transverse direction.
| Original language | English |
|---|---|
| Pages (from-to) | 1786-1794 |
| Number of pages | 9 |
| Journal | ACS Nano |
| Volume | 6 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 28 2012 |
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Keywords
- 3D anisotropic nanoparticles
- multipolar longitudinal plasmon modes
- multipolar transverse plasmon modes
- multiscale particles
- polarization-dependent scattering
ASJC Scopus subject areas
- Engineering(all)
- Materials Science(all)
- Physics and Astronomy(all)
Cite this
Polarization-dependent multipolar plasmon resonances in anisotropic multiscale au particles. / You, Eun Ah; Zhou, Wei; Suh, Jae Yong; Huntington, Mark D.; Odom, Teri W.
In: ACS Nano, Vol. 6, No. 2, 28.02.2012, p. 1786-1794.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Polarization-dependent multipolar plasmon resonances in anisotropic multiscale au particles
AU - You, Eun Ah
AU - Zhou, Wei
AU - Suh, Jae Yong
AU - Huntington, Mark D.
AU - Odom, Teri W
PY - 2012/2/28
Y1 - 2012/2/28
N2 - This paper reports the fabrication and characterization of three-dimensional (3D) multiscale Au particles with different aspect ratios. Increasing the length of the particles resulted in excitation of a longitudinal mode and two different transverse modes having different multipolar orders. The multipolar orders increased for both longitudinal and transverse modes as the aspect ratio increased. Finite-difference time-domain calculations revealed that the structural asymmetry of the 3D anisotropic particles were the reason for the two distinct transverse plasmon resonances. When the 3D structural change occurred at the ends of the multiscale particle, however, the optical response showed two resonances in the longitudinal direction and only a single resonance in the transverse direction.
AB - This paper reports the fabrication and characterization of three-dimensional (3D) multiscale Au particles with different aspect ratios. Increasing the length of the particles resulted in excitation of a longitudinal mode and two different transverse modes having different multipolar orders. The multipolar orders increased for both longitudinal and transverse modes as the aspect ratio increased. Finite-difference time-domain calculations revealed that the structural asymmetry of the 3D anisotropic particles were the reason for the two distinct transverse plasmon resonances. When the 3D structural change occurred at the ends of the multiscale particle, however, the optical response showed two resonances in the longitudinal direction and only a single resonance in the transverse direction.
KW - 3D anisotropic nanoparticles
KW - multipolar longitudinal plasmon modes
KW - multipolar transverse plasmon modes
KW - multiscale particles
KW - polarization-dependent scattering
UR - http://www.scopus.com/inward/record.url?scp=84857722271&partnerID=8YFLogxK
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U2 - 10.1021/nn204845z
DO - 10.1021/nn204845z
M3 - Article
VL - 6
SP - 1786
EP - 1794
JO - ACS Nano
JF - ACS Nano
SN - 1936-0851
IS - 2
ER -