F.K. LeGoues, P.M. Mooney, et al.
Physical Review Letters
The phase diagram of a nanoscale system can be substantially different than in the bulk, but quantitative measurements have proven elusive. Here we use insitu microscopy to observe a phase transition in a nanoscale system, together with a simple quantitative model to extract the size effects from these measurements. We expose a Au particle to disilane gas, and observe the transition from a two-phase Au+AuSi system to single-phase AuSi. Size effects are evident in the nonlinear disappearance of the solid Au. Our analysis shows a substantial shift in the liquidus line, and a discontinuous change in the liquid composition at the transition. It also lets us estimate the liquid-solid interfacial free energy. © 2009 The American Physical Society.
F.K. LeGoues, P.M. Mooney, et al.
Physical Review Letters
J. Tersoff
ICDS 1995
C. Detavernier, A.S. Özcan, et al.
Nature
M.A. Lutz, R.M. Feenstra, et al.
Surface Science