Fig. 1: The optical heating and determination of the melting point.
From: Superheating of grain boundaries within bulk colloidal crystals
a The schematic of optical heating. b The measured temperature profile on the object plane. c Determination of the bulk melting point. Squares: Lindemann parameter L as a function of temperature (and volume fraction ϕ). Circles: the critical radii for homogeneous nucleation inside a superheated single crystalline ___domain. The vertical dotted lines denote the melting and freezing points respectively. Inset 1: 2D mean-square displacement (MSD) which saturates after 4 s. L is computed from the MSD plateau value. Insets 2 and 3: cross-sections of real images of the crystals and the bulk solid–liquid coexistence before and after melting, respectively. Error bars correspond to the standard deviation. Scale bars: 5 μm.
