title: Step-flow kinetics in nanowire growth.
abstract: Nanowire growth occurs by step flow at the wire-catalyst interface, with strikingly different step-flow kinetics for solid versus liquid catalysts. Here we report quantitative in situ measurements of step flow together with a kinetic model that reproduces the behavior. This allows us to identify the key parameters controlling step-flow growth, evaluate changes in the catalyst composition during growth, and identify the most favorable conditions for growing abrupt heterojunctions in nanowires.
authors.affiliation: School of Materials Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana, USA.
authors.forename: C-Y
authors.initials: CY
authors.lastname: Wen
authors.forename: J
authors.initials: J
authors.lastname: Tersoff
authors.forename: M C
authors.initials: MC
authors.lastname: Reuter
authors.forename: E A
authors.initials: EA
authors.lastname: Stach
authors.forename: F M
authors.initials: FM
authors.lastname: Ross