Topologically controlled growth of magnetic-metal-functionalized semiconductor oxide nanorods.
Colloidal semiconductor-magnetic hybrid nanocrystals with topologically controlled composition are fabricated by heterogeneous nucleation of spherical epsilon-Co domains onto anatase TiO2 nanorods. The latter can be selectively decorated at either their tips or at multiple locations along their longitudinal sidewalls, forming lattice-matched heterointerfaces regardless of the metal deposition sites. The possibility of switching between either heterostructure growth modes arises from the facet-dependent chemical reactivity of the oxide seeds, which is governed mainly by selective adhesion of the surfactants rather than by small differences in misfit-induced interfacial strain at the relevant junction points.
Casavola
Marianna
M
National Nanotechnology Laboratory of CNR-INFM, Unità di Ricerca IIT, Distretto Tecnologico ISUFI, via per Arnesano km 5, 73100 Lecce, Italy.
Grillo
Vincenzo
V
Carlino
Elvio
E
Giannini
Cinzia
C
Gozzo
Fabia
F
Pinel
Enrique Fernandez
EF
Garcia
Miguel Angel
MA
Manna
Liberato
L
Cingolani
Roberto
R
Cozzoli
Pantaleo Davide
PD