title: Ultrafast dynamics in unaligned MWCNTs decorated with metal nanoparticles.
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.
authors.affiliation: -LAMP and Dipartimento di Matematica e Fisica, Università Cattolica, 25121 Brescia, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Manzoni
authors.forename: S
authors.initials: S
authors.lastname: Ponzoni
authors.forename: G
authors.initials: G
authors.lastname: Galimberti
authors.forename: M
authors.initials: M
authors.lastname: Scarselli
authors.forename: O
authors.initials: O
authors.lastname: Pulci
authors.forename: L
authors.initials: L
authors.lastname: Camilli
authors.forename: L
authors.initials: L
authors.lastname: Matthes
authors.forename: P
authors.initials: P
authors.lastname: Castrucci
authors.forename: S
authors.initials: S
authors.lastname: Pagliara