Abstract
We investigated properties of photoluminescence from single gold nanorods induced by near-field two-photon excitation, using scanning near-field optical microscopy. Photoluminescence spectrum showed two peaks around 550 and 650 nm in wavelengths regardless of the rod dimensions, whereas the intensity ratio of the two spectral components varies from rod to rod. We discussed the observed spectral features of photoluminescence based on electromagnetic calculations and found that the observed spectral features can be explained in terms of local field enhancement in the vicinity of the gold nanorod due to plasmon-mode excitation.
| Original language | English |
|---|---|
| Pages (from-to) | 11756-11759 |
| Number of pages | 4 |
| Journal | Journal of Physical Chemistry C |
| Volume | 113 |
| Issue number | 27 |
| DOIs | |
| Publication status | Published - 2009 Jul 9 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Energy(all)
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Properties of photoluminescence from single gold nanorods induced by near-field two-photon excitation. / Imura, Kohei; Okamoto, Hiromi.
In: Journal of Physical Chemistry C, Vol. 113, No. 27, 09.07.2009, p. 11756-11759.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Properties of photoluminescence from single gold nanorods induced by near-field two-photon excitation
AU - Imura, Kohei
AU - Okamoto, Hiromi
PY - 2009/7/9
Y1 - 2009/7/9
N2 - We investigated properties of photoluminescence from single gold nanorods induced by near-field two-photon excitation, using scanning near-field optical microscopy. Photoluminescence spectrum showed two peaks around 550 and 650 nm in wavelengths regardless of the rod dimensions, whereas the intensity ratio of the two spectral components varies from rod to rod. We discussed the observed spectral features of photoluminescence based on electromagnetic calculations and found that the observed spectral features can be explained in terms of local field enhancement in the vicinity of the gold nanorod due to plasmon-mode excitation.
AB - We investigated properties of photoluminescence from single gold nanorods induced by near-field two-photon excitation, using scanning near-field optical microscopy. Photoluminescence spectrum showed two peaks around 550 and 650 nm in wavelengths regardless of the rod dimensions, whereas the intensity ratio of the two spectral components varies from rod to rod. We discussed the observed spectral features of photoluminescence based on electromagnetic calculations and found that the observed spectral features can be explained in terms of local field enhancement in the vicinity of the gold nanorod due to plasmon-mode excitation.
UR - http://www.scopus.com/inward/record.url?scp=67650825692&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67650825692&partnerID=8YFLogxK
U2 - 10.1021/jp9018074
DO - 10.1021/jp9018074
M3 - Article
VL - 113
SP - 11756
EP - 11759
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 27
ER -