Sawtooth Faceting in Rutile Nanowires.

ABSTRACT: Sawtooth faceting, with a diameter-dependent period, is pervasively observed in many Si, III-V, and II-VI nanowires during vapor-phase growth. This can be linked to an oscillation in surface energies, which are influenced by many factors such as crystal anisotropy, surface decoration, and twinning. Without the presence of surface decoration and planar defects, TiO₂ rutile nanowires, axially oriented along a low-symmetry axis of ⟨110⟩, are promising to decouple the effect of crystal anisotropy from other factors. In this work, we synthesized ⟨110⟩ rutile nanowires, which exhibit complex periodic faceting consisting of {101} and {11̅0} facets. In addition to the expected linear width dependence, rutile nanowires, with the same width but different outward-inclined shapes, maintain

SUBMITTER: Zhou P 

PROVIDER: S-EPMC8973107 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature