Ultrafast dynamics in unaligned MWCNTs decorated with metal nanoparticles

G. Manzoni; S. Ponzoni; G. Galimberti; M. Scarselli; O. Pulci; Luca Camilli; L. Matthes; P. Castrucci; S. Pagliara

doi:10.1088/0957-4484/27/23/235704

Ultrafast dynamics in unaligned MWCNTs decorated with metal nanoparticles

G. Manzoni, S. Ponzoni, G. Galimberti, M. Scarselli, O. Pulci, Luca Camilli, L. Matthes, P. Castrucci, S. Pagliara

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The relaxation dynamics of unaligned multi-walled carbon nanotubes decorated with metallic nanoparticles have been studied by using transient optical measurements. The fast dynamics due to the short-lived free-charge carriers excited by the pump are not affected by the presence of nanoparticles. Conversely, a second long dynamics, absent in bare carbon nanotubes, appears only in the decorated samples. A combination of experiment and theory allows us to ascribe this long dynamics to relaxation channels involving electronic states localized at the tube-nanoparticle interface.

Original language	English
Article number	235704
Journal	Nanotechnology
Volume	27
Issue number	23
Number of pages	5
ISSN	0957-4484
DOIs	https://doi.org/10.1088/0957-4484/27/23/235704
Publication status	Published - 2016

Keywords

Carbon nanotubes
Time-resolved spectroscopy
Hybrid systems

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10.1088/0957-4484/27/23/235704

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abstract = "The relaxation dynamics of unaligned multi-walled carbon nanotubes decorated with metallic nanoparticles have been studied by using transient optical measurements. The fast dynamics due to the short-lived free-charge carriers excited by the pump are not affected by the presence of nanoparticles. Conversely, a second long dynamics, absent in bare carbon nanotubes, appears only in the decorated samples. A combination of experiment and theory allows us to ascribe this long dynamics to relaxation channels involving electronic states localized at the tube-nanoparticle interface.",

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AU - Manzoni, G.

AU - Ponzoni, S.

AU - Galimberti, G.

AU - Scarselli, M.

AU - Pulci, O.

AU - Camilli, Luca

AU - Matthes, L.

AU - Castrucci, P.

AU - Pagliara, S.

PY - 2016

Y1 - 2016

N2 - The relaxation dynamics of unaligned multi-walled carbon nanotubes decorated with metallic nanoparticles have been studied by using transient optical measurements. The fast dynamics due to the short-lived free-charge carriers excited by the pump are not affected by the presence of nanoparticles. Conversely, a second long dynamics, absent in bare carbon nanotubes, appears only in the decorated samples. A combination of experiment and theory allows us to ascribe this long dynamics to relaxation channels involving electronic states localized at the tube-nanoparticle interface.

AB - The relaxation dynamics of unaligned multi-walled carbon nanotubes decorated with metallic nanoparticles have been studied by using transient optical measurements. The fast dynamics due to the short-lived free-charge carriers excited by the pump are not affected by the presence of nanoparticles. Conversely, a second long dynamics, absent in bare carbon nanotubes, appears only in the decorated samples. A combination of experiment and theory allows us to ascribe this long dynamics to relaxation channels involving electronic states localized at the tube-nanoparticle interface.

KW - Carbon nanotubes

KW - Time-resolved spectroscopy

KW - Hybrid systems

U2 - 10.1088/0957-4484/27/23/235704

DO - 10.1088/0957-4484/27/23/235704

M3 - Journal article

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VL - 27

JO - Nanotechnology

JF - Nanotechnology

IS - 23

M1 - 235704

ER -

Ultrafast dynamics in unaligned MWCNTs decorated with metal nanoparticles

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