Plateau–Rayleigh crystal growth of periodic shells on one-dimensional substrates

摘要: The Plateau-Rayleigh instability was first proposed in the mid-1800s to describe how a column of water breaks apart into droplets lower its surface tension. This later generalized account for constant volume rearrangement various one-dimensional liquid and solid materials. Here, we report growth phenomenon that is unique materials exploits underlying physics instability. We term crystal demonstrate it can be used grow periodic shells on substrates. Specifically, show certain conditions, depositing Si onto uniform-diameter cores, Ge cores generate diameter-modulated core-shell nanowires. Rational control deposition conditions enables tuning distinct morphological features, including diameter-modulation periodicity amplitude cross-sectional anisotropy. Our results suggest energy reductions drive formation shells, variation kinetic terms facet energetics provide means tunability.