The study of plasmon-induced electromagnetic fields is a very interesting topic for basic research and photonic applications. The plasmon properties depend on many factors, such as composition, size, shape and arrangement of nanoparticles. In this paper, we propose an experimental and theoretical study on the optical properties of gold nanoparticles deposited by pulsed laser ablation and investigated by near-field optical microscopy (SNOM) in a transmission farfield collection scheme. The electromagnetic field properties have been simulated by an exact theoretical analysis based on the multipolar expansion of the fields and on T-matrix approach. The theoretical model almost accurately reproduces the experimental data and makes us confident that the used method is suitable to describe more complex system of metal nanoparticles.

Near-Field Optical Detection of Plasmon Resonance from Gold Nanoparticles: Theoretical and Experimental Evidence / Triolo, C.; Cacciola, A.; Saija, R.; Trusso, S.; Spadaro, M; Neri, F.; Ossi, P. M.; Patanè, S.. - In: PLASMONICS. - ISSN 1557-1955. - ELETTRONICO. - 10:(2015), pp. 63-70. [10.1007/s11468-014-9778-0]

Near-Field Optical Detection of Plasmon Resonance from Gold Nanoparticles: Theoretical and Experimental Evidence

Spadaro M;
2015-01-01

Abstract

The study of plasmon-induced electromagnetic fields is a very interesting topic for basic research and photonic applications. The plasmon properties depend on many factors, such as composition, size, shape and arrangement of nanoparticles. In this paper, we propose an experimental and theoretical study on the optical properties of gold nanoparticles deposited by pulsed laser ablation and investigated by near-field optical microscopy (SNOM) in a transmission farfield collection scheme. The electromagnetic field properties have been simulated by an exact theoretical analysis based on the multipolar expansion of the fields and on T-matrix approach. The theoretical model almost accurately reproduces the experimental data and makes us confident that the used method is suitable to describe more complex system of metal nanoparticles.
2015
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/308947
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 4
social impact