Publication Date
11-6-2024
Description
In response to gradual nanoindentation, the surface of muscovite mica deforms by sudden stochastic nanometer-scale displacement bursts. Here, the statistics of these displacement events are interpreted using a statistical model previously used to model earthquakes to understand how chemically reactive environments alter the surface properties of this material. We show that the statistics of nanoindentation displacement bursts in muscovite mica are tuned by chemomechanical weakening in a manner similar to how the statistics of model events are tuned by a mechanical weakening parameter that describes how easily system-spanning cracks can be nucleated. Because the predictions of this model are independent of any surface defects or structural details, these results suggest this simple model can be universally used to describe chemomechanical weakening in many systems prone to slip avalanches on a wide range of spatio-temporal scales.
Journal
Nature Communications
Volume
15
First Page
9552-1
Last Page
9552-9
Department
Mechanical Engineering
Second Department
Chemical Engineering
Link to Published Version
https://www.nature.com/articles/s41467-024-53213-5
DOI
https://doi.org/10.1038/s41467-024-53213-5
Recommended Citation
Sickle, Jordan J.; Mook, William M.; DelRio, Frank W.; Ilgen, Anastasia G.; Wright, Wendelin; and Dahmen, Karin A.. "Quantifying Chemomechanical Weakening in Muscovite Mica with a Simple Micromechanical Model." (2024) : 9552-1-9552-9.