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Updated: Aug 23, 2025
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Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy
Published on: July 18, 2014
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Interaction of deformable solid and hollow particles with rough surface morphology in colloidal systems.
1Green Processes Research Centre and Chemical Engineering Department, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B5E1, Canada.
Journal of Colloid and Interface Science
|November 5, 2022
Summary
This study developed numerical models to simulate deformable particles, revealing hollow particles have better attachment. Particle size significantly influences deformability and interaction, while surface tension and roughness have complex effects.
Area of Science:
- Colloid and Surface Science
- Materials Science
- Computational Physics
Background:
- Natural particles often possess deformable and rough surfaces.
- Simulating non-contact interactions of deformable particles is crucial for understanding colloidal systems.
- Existing models lack comprehensive simulation capabilities for rough-surfaced deformable particles.
Purpose of the Study:
- To develop numerical models for simulating the deformation of solid and hollow particles with rough surfaces.
- To investigate the impact of deformation on the interaction of these particles.
- To analyze the influence of surface tension, particle size, and surface roughness on particle interactions.
Main Methods:
- Modeled deformable solid and hollow particles using fractal geometry.
- Simulated non-contact interactions via a three-stage deformation model.
- Investigated effects of surface tension, particle size, and fractal dimension on particle behavior.
Main Results:
- Hollow particles exhibit a deeper primary minimum and lack an energy barrier, indicating superior attachment affinity compared to solid particles.
- Increased particle size enhances deformability and potential interaction, being the most influential parameter.
- Surface tension weakens deformability and reduces aggregation; fractal dimension's effect on deformability and interaction energy is complex and sometimes contradictory.
Conclusions:
- The developed numerical models can simulate deformable particle deformation and interaction.
- Particle size is the dominant factor affecting deformability and interaction in colloidal systems.
- Findings are applicable to predicting behavior in suspension systems, including biological cell suspensions.
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