# Grain Boundary Motion on Curved Substrate

Source: [Grain Boundary Motion on Curved Substrate](<https://www.sota2.com/research/paper/68fa40e61e209131ce8f6bc5>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T03:01:58.202Z

Authors: Kongtao Chen

Published: 2022-01-21T05:38:41.000Z

## Abstract

Grain boundary (GB) kinetics is important for many applications in 2d materials and metal thin films. To study how the substrate shape affects GB mobility and kinetics, we develop a kinetic Monte Carlo (kMC) simulation method and an analytical model for GBs on the curved substrate by combining disconnection theory and by Foppl von Karman equations. Using sinusoidal MoS2 as an example, we can increase its GB mobility more than 50 times by changing substrate shape amplitudes and periods. We find that amplitude change GB mobility exponentially while wave vector change GB mobility linearly. The sinusoidal GB kinetic shape has wave vector twice as substrate and amplitude proportional to substrate squared amplitude.

## Recorded benchmark results

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2201.08546>)

[PDF](<https://arxiv.org/pdf/2201.08546.pdf>)