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Title: Effect of reversible dislocation-based deformation on nanoparticle strain at failure

Journal Article · · Nanoscale
DOI: https://doi.org/10.1039/d4nr05138f · OSTI ID:2531195

Molecular dynamics simulations are used to isolate and quantify the reversible and irreversible mechanisms that contribute to deformation in platinum nanoparticles under compression. Quantitative analysis reveals how the nucleation and entanglement of dislocations can lead to reversible dislocation-based deformation. Simulations run at different temperatures and loading conditions show that the formation of entangled dislocations is more likely at higher temperatures and is facilitated by loading orientations where dislocations nucleate on intersecting slip planes. The presence of entangled dislocations increases the strain at failure due to the ability of those dislocations to accommodate strain reversibly. The results are corroborated by the observation of similar entangled dislocation loops during in situ compression experiments on nanoparticles of the same material. Altogether, these findings provide insight into the role of dislocations in both reversible and irreversible deformation and their implications for nanoparticle stability and properties.

Research Organization:
University of Pittsburgh, PA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0021155
OSTI ID:
2531195
Journal Information:
Nanoscale, Journal Name: Nanoscale Journal Issue: 15 Vol. 17; ISSN 2040-3364
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (56)

Nucleation-Controlled Plasticity of Metallic Nanowires and Nanoparticles journal July 2018
Ultrahigh Strength of Dislocation-Free Ni3Al Nanocubes journal March 2012
Review of supported metal nanoparticles: synthesis methodologies, advantages and application as catalysts journal February 2020
Size and shape effects on the strength of platinum nanoparticles journal August 2021
Effect of temperature and stacking fault energy on the hardening of FCC crystals journal October 1996
Platinum Nanoclusters’ Size and Surface Structure Sensitivity of Catalytic Reactions book January 2008
Effect of surface energy on dislocation-induced field in half-space with application to thin film-substrate systems journal October 2009
Elastic limit for surface step dislocation nucleation in face-centered cubic metals: Temperature and step height dependence journal July 2010
Size effect in compression of single-crystal gold microparticles journal August 2011
On the reversibility of dislocation slip during small scale low cycle fatigue journal August 2015
Towards a universal size-dependent strength of face-centered cubic nanoparticles journal January 2016
The effects of composition and microstructure on compressive strength of Ag-Au nanoparticles journal December 2023
Influence of surface atomic structure on the mechanical response of aluminum nanospheres under compression journal March 2017
A multiscale study of the size-effect in nanoindentation of Au nanoparticles journal May 2019
LAMMPS - a flexible simulation tool for particle-based materials modeling at the atomic, meso, and continuum scales journal February 2022
Plasmon resonances for solar energy harvesting: A mechanistic outlook journal February 2015
Strain Relaxation-Induced Twin Interface Migration and Morphology Evolution of Silver Nanoparticles journal January 2019
Evaluation of Force Fields for Molecular Dynamics Simulations of Platinum in Bulk and Nanoparticle Forms journal June 2021
Soft or Hard? Investigating the Deformation Mechanisms of Au–Pd and Pd Nanocubes under Compression: An Experimental and Molecular Dynamics Study journal November 2021
Surface Area and Local Curvature: Why Roughness Improves the Bioactivity of Neural Implants journal June 2022
Uneven Strain Distribution Induces Consecutive Dislocation Slipping, Plane Gliding, and Subsequent Detwinning of Penta-Twinned Nanoparticles journal January 2024
Plastic Deformation through Dislocation Saturation in Ultrasmall Pt Nanocrystals and Its in Situ Atomistic Mechanisms journal July 2017
Size-Dependent Role of Surfaces in the Deformation of Platinum Nanoparticles journal April 2023
Separating Geometric and Diffusive Contributions to the Surface Nucleation of Dislocations in Nanoparticles journal January 2024
Onset of Plasticity in Gold Nanopillar Compression journal January 2007
Connecting atomistic and mesoscale simulations of crystal plasticity journal February 1998
Recoverable plasticity in penta-twinned metallic nanowires governed by dislocation nucleation and retraction journal January 2015
Plasticity, healing and shakedown in sharp-asperity nanoindentation journal April 2006
Liquid-like pseudoelasticity of sub-10-nm crystalline silver particles journal October 2014
Atomistic processes of surface-diffusion-induced abnormal softening in nanoscale metallic crystals journal September 2021
The Stress-Dependent Activation Parameters for Dislocation Nucleation in Molybdenum Nanoparticles journal March 2018
Size-dependent shape distributions of platinum nanoparticles journal January 2022
Molecular dynamics simulations of nanoparticles journal January 2008
Temperature Dependence of the Elastic Constants of Cu, Ag, and Au above Room Temperature journal August 1966
X-ray strain analysis at high pressure: Effect of plastic deformation in MgO journal June 2004
Commentary: The Materials Project: A materials genome approach to accelerating materials innovation journal July 2013
Size-dependent elasticity of gold nanoparticle measured by atomic force microscope based nanoindentation journal July 2019
Platinum nanoparticle compression: Combining in situ TEM and atomistic modeling journal January 2022
Micropillar compression of single-crystal single-phase (Co, Cu, Mg, Ni, Zn)O journal July 2024
Image forces on edge dislocations: a revisit of the fundamental concept with special regard to nanocrystals journal February 2011
Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool journal December 2009
Understanding contact between platinum nanocontacts at low loads: The effect of reversible plasticity journal November 2018
Modified charge transfer–embedded atom method potential for metal/metal oxide systems journal January 2004
Theory of lattice strain in a material undergoing plastic deformation: Basic formulation and applications to a cubic crystal journal June 2009
Temperature and Strain-Rate Dependence of Surface Dislocation Nucleation journal January 2008
Reversible Movement of Homogenously Nucleated Dislocations in a β -Titanium Alloy journal January 2009
Reversible Twinning in Pure Aluminum journal May 2009
Structure and Strength of Dislocation Junctions: An Atomic Level Analysis journal February 1999
Influence of an amorphous surface layer on the mechanical properties of metallic nanoparticles under compression journal March 2019
Plastic Deformation Recovery in Freestanding Nanocrystalline Aluminum and Gold Thin Films journal March 2007
Atomistic Deformation Mechanisms in Copper Nanoparticles journal September 2013
Atomistic Simulations of the Elastic Compression of Platinum Nanoparticles journal October 2022
Predicting the dislocation nucleation rate as a function of temperature and stress journal September 2011
Metal Nanoparticles for the Treatment and Diagnosis of Neurodegenerative Brain Diseases journal May 2017
Strategic role of selected noble metal nanoparticles in medicine journal June 2015
Modeling the mechanical properties of nanoparticles: a review journal January 2021