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.

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 ...

Materials research: Surprise at the grain boundary Date: October 29, 2024 Source: Ruhr-University Bochum Summary: Using state-of-the-art microscopy and simulation techniques, an international ...

Engineers mimic atom-scale grain boundaries with magnetic particles to see how shear stress influences their movement. Rice University engineers who mimic atom-scale processes to make them big ...

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 ...

This research is published in Science, titled "Grain boundaries are Brownian ratchets." Crystals are characterized by well-arranged atoms in a lattice structure. Grain boundaries are planar ...

In these materials, grain boundaries play a vital role, affecting the electrical behaviour of the material and determining these compromises. In some cases, tailoring the structure of the grain ...

Researchers in the US, Germany, Singapore and Spain have developed a new technique to obtain images of grain-boundary defects in graphene by analysing the behaviour of surface plasmons. Their study ...

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 ...

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 ...

HOUSTON – (June 6, 2022) – Rice University engineers who mimic atom-scale processes to make them big enough to see have modeled how shear influences grain boundaries in polycrystalline materials.