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Akademický článek

Strongly polarized scattering in surface enhanced Raman spectroscopy of randomly distributed molecules on gold nanowires

Autor: B. Fazio, P. G. Gucciardi, C. D'Andrea, A. Irrera, F. Bonaccorso, G. Calogero, C. Vasi, M. Allegrini, A. Toma, D. Chiappe, C. Martella, F. Buatier de Mongeot

Publikováno v: Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, Vol 89, Iss S1, Pp C1V89S1P034-1 (2011)

We study the polarized Surface Enhanced Raman Scattering from randomly oriented molecules adsorbed on near-field coupled gold nanowires. We show that the scattering is polarized always along the wire-to-wire nanocavities. We find the exact angular de

Externí odkaz: https://doaj.org/article/6bb7f37660ab404d8ff340b39d0c2d85

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Akademický článek

Tuning the structural and optical properties of gold/silver nanoalloys prepared by laser ablation in liquids for ultra-sensitive spectroscopy and optical trapping

Autor: F. Neri, G. Compagnini, P. G. Gucciardi, O. M. Maragò, C. D'Andrea, B. Fazio, M. G. Donato, E. Fazio, C. Satriano, E. Messina, L. D'Urso

Publikováno v: Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, Vol 89, Iss S1, Pp C1V89S1P064-1 (2011)

The plasmon resonance of metallic Au/Ag alloys in the colloidal state was tuned from 400 nm to 500 nm using a laser irradiated technique, performed directly in the liquid state. Interesting optical nonlinearities, trapping effects and spectroscopic e

Externí odkaz: https://doaj.org/article/3330af7c82764a2198c8974d4c14c962

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Akademický článek

Surface enhanced Raman spectroscopy of biomolecules in buffer solution

Autor: P. G. Gucciardi, O. M. Maragò, G. Calogero, N. Micali, V. Villari, C. D'Andrea, B. Fazio

Publikováno v: Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, Vol 89, Iss S1, Pp C1V89S1P035-1 (2011)

Controlled creation of SERS-active hot spots in liquid is a challenge in which optical forces can play an important role by promoting the aggregation of metal nanoparticles by optical trapping or by exploiting the radiation pressure. Here we show tha

Externí odkaz: https://doaj.org/article/39ef9574daa74c72bc8f6617c62027e5

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Akademický článek

Spectral dependence of the amplification factor in surface enhanced Raman scattering

Autor: C. D'Andrea, B. Fazio, A. Irrera, P. Artoni, O. M. Maragò, G. Calogero, P. G. Gucciardi

Publikováno v: Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, Vol 89, Iss S1, Pp C1V89S1P025-1 (2011)

Multi-wavelength SERS measurements on dyes molecules adsorbed on gold evaporated nanoparticles substrates are presented. The spectra are correlated with the Localized Surface Plasmon Resonance (LSPR) profile of the nanostructured substrate before and

Externí odkaz: https://doaj.org/article/6b3936607f1b414390ebc23ec4bcad0d

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Akademický článek

Optical trapping of carbon nanotubes and graphene

Autor: S. Vasi, M. A. Monaca, M. G. Donato, F. Bonaccorso, G. Privitera, O. Trushkevych, G. Calogero, B. Fazio, A. Irrera, M. A. Iati', R. Saija, P. Denti, F. Borghese, P. H. Jones, A. C. Ferrari, P. G. Gucciardi, O. M. Marago'

Publikováno v: Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, Vol 89, Iss S1, Pp C1V89S1P090-1 (2011)

We study optical trapping of nanotubes and graphene. We extract the distribution of both centre-of-mass and angular fluctuations from three-dimensional tracking of these optically trapped carbon nanostructures. The optical force and torque constants

Externí odkaz: https://doaj.org/article/40690372942b4319a7b31e09684eff0f

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