B.J. Spencer, P.W. Voorhees, et al.
Physical Review B - CMMP
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.
B.J. Spencer, P.W. Voorhees, et al.
Physical Review B - CMMP
M. Radosavljević, S. Heinze, et al.
Applied Physics Letters
F.M. Ross, P.A. Bennett, et al.
Micron
J. Tersoff, E. Pehlke
Physical Review Letters