Fig. 8
From: Room-temperature superionic-phase nanocrystals synthesized with a twinned lattice

Phase-transition characteristics of Cu1.93S NCs prepared by post-synthetic air oxidation. DSC thermograms of a Cu1.97S NCs synthesized by hot-injection and b Cu1.93S NCs obtained from post-synthetic air exposure of Cu1.97S NCs for 12 h. In each case, thermograms from two heating–cooling cycles performed on the same sample of NCs are shown, from which the reproducibility of the phase-transition peaks (dips) is evident. The thermograms are vertically offset for stacking. The peak temperature of the phase-transition in the heating sub-cycle was averaged across the two cycles to yield Tc. Note this study was performed on a different batch of NCs compared to the one in Fig. 7