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New insights into the early stages of creep deformation

The properties of many materials can change permanently when they are pushed beyond their limits. When a given material is subjected to a force, or ‘load’, which is stronger than a certain limit, it can become so deformed that it won’t return to its original shape, even after the load is removed. However, heavy loads […]

Study reveals new structure of gold at extremes

Three of the images collected at Argonne National Laboratory’s Dynamic Compression Sector, highlighting diffracted signals recorded on the X-ray detector. Section 1 shows the starting face-centered cubic structure; Section 2 shows the new body-centered cubic structure at 220 GPa; and Section 3 shows the liquid gold at 330 GPa. Credit: Lawrence Livermore National Laboratory Gold […]

Treating solar cell materials reveals formation of unexpected microstructures

An electron microscopy image of the strongly restructured crystal surface after treatment by benzylamine. On top of the etched 3D crystal, traces of what appears to be the 2D perovskite can be seen. Credit: Loi Lab/University of Groningen Recent advances in solar cell technology use polycrystalline perovskite films as the active layer, with an increase […]