Abstract
Shifting of the surface plasmon resonance wavelength induced by the variation of the thickness of insulating spacer between single layer graphene and Au nanoparticles is studied. The system demonstrates a blue-shift of 29 nm as the thickness of the spacer layer increases from 0 to 15 nm. This is due to the electromagnetic coupling between the localized surface plasmons excited in the nanoparticles and the graphene film. The strength of the coupling decays exponentially with a decay length of d/R = 0.36, where d is the spacer layer thickness and R is the diameter of the Au nanoparticles. The result agrees qualitatively well with the plasmon ruler equation. Interestingly, a further increment of the spacer layer thickness induces a red-shift of 17 nm in the resonance wavelength and the shift saturates when the thickness of the spacer layer increases above 20 nm.
| Original language | English |
|---|---|
| Pages (from-to) | 19690-19696 |
| Number of pages | 7 |
| Journal | Optics Express |
| Volume | 20 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - 2012 Aug 27 |
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All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
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Shifting of surface plasmon resonance due to electromagnetic coupling between graphene and Au nanoparticles. / Niu, Jing; Shin, Young Jun; Son, Jaesung; Lee, Youngbin; Ahn, Jong Hyun; Yang, Hyunsoo.
In: Optics Express, Vol. 20, No. 18, 27.08.2012, p. 19690-19696.Research output: Contribution to journal › Article
TY - JOUR
T1 - Shifting of surface plasmon resonance due to electromagnetic coupling between graphene and Au nanoparticles
AU - Niu, Jing
AU - Shin, Young Jun
AU - Son, Jaesung
AU - Lee, Youngbin
AU - Ahn, Jong Hyun
AU - Yang, Hyunsoo
PY - 2012/8/27
Y1 - 2012/8/27
N2 - Shifting of the surface plasmon resonance wavelength induced by the variation of the thickness of insulating spacer between single layer graphene and Au nanoparticles is studied. The system demonstrates a blue-shift of 29 nm as the thickness of the spacer layer increases from 0 to 15 nm. This is due to the electromagnetic coupling between the localized surface plasmons excited in the nanoparticles and the graphene film. The strength of the coupling decays exponentially with a decay length of d/R = 0.36, where d is the spacer layer thickness and R is the diameter of the Au nanoparticles. The result agrees qualitatively well with the plasmon ruler equation. Interestingly, a further increment of the spacer layer thickness induces a red-shift of 17 nm in the resonance wavelength and the shift saturates when the thickness of the spacer layer increases above 20 nm.
AB - Shifting of the surface plasmon resonance wavelength induced by the variation of the thickness of insulating spacer between single layer graphene and Au nanoparticles is studied. The system demonstrates a blue-shift of 29 nm as the thickness of the spacer layer increases from 0 to 15 nm. This is due to the electromagnetic coupling between the localized surface plasmons excited in the nanoparticles and the graphene film. The strength of the coupling decays exponentially with a decay length of d/R = 0.36, where d is the spacer layer thickness and R is the diameter of the Au nanoparticles. The result agrees qualitatively well with the plasmon ruler equation. Interestingly, a further increment of the spacer layer thickness induces a red-shift of 17 nm in the resonance wavelength and the shift saturates when the thickness of the spacer layer increases above 20 nm.
UR - http://www.scopus.com/inward/record.url?scp=84865744467&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84865744467&partnerID=8YFLogxK
U2 - 10.1364/OE.20.019690
DO - 10.1364/OE.20.019690
M3 - Article
C2 - 23037021
AN - SCOPUS:84865744467
VL - 20
SP - 19690
EP - 19696
JO - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 18
ER -