title: Polycrystalline nanowires of gadolinium-doped ceria via random alignment mediated by supercritical carbon dioxide.
abstract: This study proposes a seed/template-free method that affords high-purity semiconducting nanowires from nanoclusters, which act as basic building blocks for nanomaterials, under supercritical CO2 fluid. Polycrystalline nanowires of Gd-doped ceria (Gd-CeO2) were formed by CO2-mediated non-oriented attachment of the nanoclusters resulting from the dissociation of single-crystalline aggregates. The unique formation mechanism underlying this morphological transition may be exploited for the facile growth of high-purity polycrystalline nanowires.
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea.
authors.forename: Sang Woo
authors.initials: SW
authors.lastname: Kim
authors.forename: Jae-Pyoung
authors.initials: JP
authors.lastname: Ahn