Abstract
Two-dimensional nanoparticle self-assemblies provide a means of tuning the optical properties by manipulation of the fabrication parameters, thereby controlling the light-matter interaction. We report fabrication of self-assembled monolayers of colloidal gold nanoparticles on organosilane-coated substrates and a study of the linear and nonlinear optical properties. With increase in particle coverage of the gold monolayer self assemblies, an additional band in the absorption spectrum due to the collective particle surface plasmon resonance could be seen. The intensity and λ max of this feature depends on the interparticle spacing and particle aggregation. Z-scan measurements show a saturable absorption behavior and a negative nonlinear refractive index of the monolayer films. A strong correlation between particle density and the linear and nonlinear optical properties is established.
| Original language | English |
|---|---|
| Pages (from-to) | I83-I89 |
| Journal | Scanning |
| Volume | 26 |
| Issue number | 5 SUPPL. |
| Publication status | Published - 2004 Nov 1 |
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Keywords
- Au nanoparticles
- Optical properties
- Self-assembled monolayers
- Surface plasmon resonance
- Z-scan
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Instrumentation
Cite this
Fabrication and optical studies of monolayer assemblies of Au nanoparticles. / Borgohain, Kavita; Ho, Fu Han; Chen, Hau Ming; Liu, Ru Shi; Hu, Shu Fen; Tsai, Din Ping.
In: Scanning, Vol. 26, No. 5 SUPPL., 01.11.2004, p. I83-I89.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fabrication and optical studies of monolayer assemblies of Au nanoparticles
AU - Borgohain, Kavita
AU - Ho, Fu Han
AU - Chen, Hau Ming
AU - Liu, Ru Shi
AU - Hu, Shu Fen
AU - Tsai, Din Ping
PY - 2004/11/1
Y1 - 2004/11/1
N2 - Two-dimensional nanoparticle self-assemblies provide a means of tuning the optical properties by manipulation of the fabrication parameters, thereby controlling the light-matter interaction. We report fabrication of self-assembled monolayers of colloidal gold nanoparticles on organosilane-coated substrates and a study of the linear and nonlinear optical properties. With increase in particle coverage of the gold monolayer self assemblies, an additional band in the absorption spectrum due to the collective particle surface plasmon resonance could be seen. The intensity and λ max of this feature depends on the interparticle spacing and particle aggregation. Z-scan measurements show a saturable absorption behavior and a negative nonlinear refractive index of the monolayer films. A strong correlation between particle density and the linear and nonlinear optical properties is established.
AB - Two-dimensional nanoparticle self-assemblies provide a means of tuning the optical properties by manipulation of the fabrication parameters, thereby controlling the light-matter interaction. We report fabrication of self-assembled monolayers of colloidal gold nanoparticles on organosilane-coated substrates and a study of the linear and nonlinear optical properties. With increase in particle coverage of the gold monolayer self assemblies, an additional band in the absorption spectrum due to the collective particle surface plasmon resonance could be seen. The intensity and λ max of this feature depends on the interparticle spacing and particle aggregation. Z-scan measurements show a saturable absorption behavior and a negative nonlinear refractive index of the monolayer films. A strong correlation between particle density and the linear and nonlinear optical properties is established.
KW - Au nanoparticles
KW - Optical properties
KW - Self-assembled monolayers
KW - Surface plasmon resonance
KW - Z-scan
UR - http://www.scopus.com/inward/record.url?scp=6344284110&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=6344284110&partnerID=8YFLogxK
M3 - Article
C2 - 15540820
AN - SCOPUS:6344284110
VL - 26
SP - I83-I89
JO - Scanning
JF - Scanning
SN - 0161-0457
IS - 5 SUPPL.
ER -