Publications by authors named "Daniel Orlikowski"
Detonation nanodiamond (DND) is known to form aggregates that significantly reduce their unique nanoscale properties and require postprocessing to separate. How and when DND aggregates is an important question that has not been answered experimentally and could provide the foundation for approaches to limit aggregation. To answer this question, time-resolved small-angle X-ray scattering was performed during the detonation of high-explosives that are expected to condense particulates in the diamond, graphite, and liquid regions of the carbon phase diagram.
View Article and Find Full Text PDFArticle Synopsis
- Recent advances in Graded Density Impactor (GDI) fabrication now allow gas gun experiments to reach pressures up to 5 Mbars.
- GDIs are composed of nearly 100 layers of mixed materials like magnesium, copper, and tungsten, designed to create specific density gradients for targeted thermodynamic paths.
- The report details various experiments conducted at different pressures with GDIs and discusses the results and simulations obtained from these tests.
We have determined the lattice dynamics of molybdenum at high pressure to 37 GPa using high-resolution inelastic x-ray scattering. Over the investigated pressure range, we find a significant decrease in the H-point phonon anomaly. We also present calculations based on density functional theory that accurately predict this pressure dependence.
View Article and Find Full Text PDF