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  Quantitative Understanding of the Optical Properties of a Single, Complex-Shaped Gold Nanoparticle from Experiment and Theory

Perassi, E. M., Hrelescu, C., Wisnet, A., Döblinger, M., Scheu, C., Jäckel, F., et al. (2014). Quantitative Understanding of the Optical Properties of a Single, Complex-Shaped Gold Nanoparticle from Experiment and Theory. ACS Nano, 8(5), 4395-4402. doi:10.1021/nn406270z.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-B8C4-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-6E61-7
Genre: Journal Article

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 Creators:
Perassi, Eduardo M.1, Author              
Hrelescu, Calin2, 3, Author              
Wisnet, Andreas4, Author              
Döblinger, Markus5, Author              
Scheu, Christina6, Author              
Jäckel, Frank3, 7, Author              
Coronado, Eduardo A.1, Author              
Feldmann, Jochen3, Author              
Affiliations:
1Instituto de Investigaciones en Fisico-química de Córdoba (INFIQC), Fac. de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5000, Argentina, ou_persistent22              
2Institute of Applied Physics, Johannes Kepler University, 4040 Linz, Austria, ou_persistent22              
3Photonics and Optoelectronics Group, Department of Physics and CeNS, Ludwig-Maximilians-Universität München, Munich, Germany , ou_persistent22              
4Department of Chemistry, Ludwig-Maximilians-Universität and Center for NanoScience (CeNS), Butenandtstraße 11, 81377 Munich, Germany, ou_persistent22              
5Department of Chemistry and CeNS, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-11 (E), Munich, Germany, ou_persistent22              
6Department of Chemistry and Center for NanoScience (CeNS), Ludwig-Maximilians Universität München, Germany, ou_persistent22              
7Department of Physics, Stephenson Institute for Renewable Energy, University of Liverpool, Peach Street, Liverpool L69 7ZF, UK, ou_persistent22              

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Free keywords: SURFACE-ENHANCED RAMAN; ELECTRON TOMOGRAPHY; METAL NANOPARTICLES; SHELL NANOPARTICLES; AQUEOUS-SOLUTION; NEAR-FIELD; SCATTERING; SPECTROSCOPY; MOLECULE; MICROSCOPYChemistry; Science & Technology - Other Topics; Materials Science; nanoparticle; enhancement; tomography; DDA; dark-field; Rayleigh; Raman;
 Abstract: We report on a combined study of Rayleigh and Raman scattering spectroscopy, 3D electron tomography, and discrete dipole approximation (DDA) calculations of a single, complex-shaped gold nanoparticle (NP). Using the exact reconstructed 3D morphology of the NP as input for the DDA calculations, the experimental results can be reproduced with unprecedented precision and detail. We find that not only the exact NP morphology but also the surroundings including the points of contact with the substrate are of crucial importance for a correct prediction of the NP optical properties. The achieved accuracy of the calculations allows determining how many of the adsorbed molecules have a major contribution to the Raman signal, a fact that has important Implications for analyzing experiments and designing sensing applications.

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Language(s): eng - English
 Dates: 2014-05
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: ISI: 000336640600030
DOI: 10.1021/nn406270z
 Degree: -

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Title: ACS Nano
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 8 (5) Sequence Number: - Start / End Page: 4395 - 4402 Identifier: Other: 1936-0851
CoNE: https://pure.mpg.de/cone/journals/resource/1936-0851