Grain boundaries in polycrystalline graphene are an obstacle to electron transport. However, cunning refinements in growth techniques push the limits to obtain super-sized single-crystal domains.

However, there are important exceptions, especially in cases for which compromises must be made between mechanical and electrical properties and costs. In these materials, grain boundaries play a ...

(Nanowerk News) A team of researchers found that randomly selected, high-angle, general grain boundaries in a nickel-bismuth (Ni-Bi) polycrystalline alloy can undergo interfacial reconstruction to ...

Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals. Science Advances , 2022; 8 (22) DOI: 10.1126/sciadv.abn5715 Cite This Page : ...

"These grain boundaries have an enormous influence on the durability and overall performance of a material," says Dr. Vivek Devulapalli who has performed the microscopy work of the study.

Grain boundaries are interfaces that separate different crystallographic regions, known as grains, within a polycrystalline material. In nanomaterials, grain boundaries play a crucial role in ...

Based on the above theoretical mineral physics approach, the team examined the mechanical behavior and thermodynamic properties of high-angle tilt grain boundaries in (Mg,Fe)O ferropericlase ...

Results indicate that grain boundary strength and motion, accommodated by either shear-coupled migration (SCM) or grain boundary sliding (GBS), strongly varies with pressure resulting in grain ...

Image credit: Aditya Sood, Stanford University. Imperfections such as grain boundaries in a material affect how efficiently it can transport heat at the nanoscale. A team of researchers led by Kenneth ...