Fig. 4: Estimation of preserved pressures in AuNPs encapsulated in NDCs.
From: Preserving high-pressure solids via freestanding thin-film engineering
Comparison of the size distribution and average diameter, \(\bar{D}\), (a) and (111) d-spacing of the AuNPs (b) between the initial sample and the sample recovered from the 56 GPa–2200 K treatment. Each data point in b represents the d-spacing determined by TEM on an individual AuNP. c Preserved pressure of AuNPs as a function of NDCs synthesis pressure. The preserved pressures are presented as mean values ±SD. The error bars are calculated based on d spacing, they are relatively large due to the fluctuation in d-spacing estimation across individual AuNPs by HRTEM. The error bars for the synthesis pressure represent the pressure gradient in the pressure-transmitting medium, argon.
