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Optical extinction spectrum of a single metal nanoparticle: quantitative characterization of a particle and of its local environment

Optical extinction spectrum of a single metal nanoparticle: quantitative characterization of a particle and of its local environment
Optical extinction spectrum of a single metal nanoparticle: quantitative characterization of a particle and of its local environment
Optical absorption spectroscopy of a single metal nanoparticle is used to characterize its properties and to obtain quantitative information on its local environment. Experiments were performed using the spatial modulation spectroscopy (SMS) technique on 16 nm mean diameter gold nanoparticles embedded in different medium (i.e., deposited on glass or embedded in a polymer layer).

Extraction of the nanoparticle characteristics and determination of the dielectric constant of its environment are discussed, focusing on the impact of the particle shape assumption. The refractive index of the local environment deduced from these measurements shows large particle-to-particle variation, yielding information about fluctuations of the dielectric properties of the surrounding medium on a nanometric scale, inaccessible in ensemble measurements.

The influence of the environment of a nanoparticle on its optically extracted geometry and its surface plasmon resonance broadening by surface effect are also studied at a single-particle level.
1550-235X
205410-205418
Muskens, O. L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
Billaud, P.
b162bf04-730c-4c24-8b38-3b8d9a1b89cf
Broyer, M.
41ba878a-35a0-4b02-82ee-2ea63caea019
Del Fatti, N.
8ee3dee9-d25d-469e-89b7-5f88742831eb
Vallée, F.
fab9da88-62d0-4fb6-a559-494bb483be3b
Muskens, O. L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
Billaud, P.
b162bf04-730c-4c24-8b38-3b8d9a1b89cf
Broyer, M.
41ba878a-35a0-4b02-82ee-2ea63caea019
Del Fatti, N.
8ee3dee9-d25d-469e-89b7-5f88742831eb
Vallée, F.
fab9da88-62d0-4fb6-a559-494bb483be3b

Muskens, O. L., Billaud, P., Broyer, M., Del Fatti, N. and Vallée, F. (2008) Optical extinction spectrum of a single metal nanoparticle: quantitative characterization of a particle and of its local environment. Physical Review B, 78 (20), 205410-205418. (doi:10.1103/PhysRevB.78.205410).

Record type: Article

Abstract

Optical absorption spectroscopy of a single metal nanoparticle is used to characterize its properties and to obtain quantitative information on its local environment. Experiments were performed using the spatial modulation spectroscopy (SMS) technique on 16 nm mean diameter gold nanoparticles embedded in different medium (i.e., deposited on glass or embedded in a polymer layer).

Extraction of the nanoparticle characteristics and determination of the dielectric constant of its environment are discussed, focusing on the impact of the particle shape assumption. The refractive index of the local environment deduced from these measurements shows large particle-to-particle variation, yielding information about fluctuations of the dielectric properties of the surrounding medium on a nanometric scale, inaccessible in ensemble measurements.

The influence of the environment of a nanoparticle on its optically extracted geometry and its surface plasmon resonance broadening by surface effect are also studied at a single-particle level.

Full text not available from this repository.

More information

Published date: 10 November 2008

Identifiers

Local EPrints ID: 144337
URI: http://eprints.soton.ac.uk/id/eprint/144337
ISSN: 1550-235X
PURE UUID: c534a3f8-fa4b-4608-b6c0-d08d0d7bc960
ORCID for O. L. Muskens: ORCID iD orcid.org/0000-0003-0693-5504

Catalogue record

Date deposited: 14 Apr 2010 09:42
Last modified: 03 Dec 2019 01:42

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