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Updated: Aug 5, 2026
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An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Dynamical arrest in colloidal monolayers induced by energy landscape
Chenghao Han1, Yanli Sun1, Xiaoyan Sun2
1College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
The Journal of Chemical Physics
|August 3, 2026
Summary
A periodic potential landscape dramatically slows colloidal monolayer dynamics, causing dynamical arrest. This trapping suppresses particle rearrangement and reduces dynamical heterogeneity, highlighting the energy landscape's role.
Area of Science:
- Soft Matter Physics
- Colloidal Science
- Statistical Mechanics
Background:
- Colloidal monolayers exhibit supercooled liquid behavior without external potentials.
- Particle dynamics involve temporary cage confinement and long-time diffusive motion.
- Structural rearrangements are characteristic of the liquid state.
Purpose of the Study:
- To investigate the influence of a periodic potential landscape on colloidal monolayer dynamics.
- To understand how external potentials affect supercooled liquids and dynamical arrest.
- To explore the role of the energy landscape in colloidal systems.
Main Methods:
- Video microscopy was employed for experimental investigation.
- A periodic potential was generated using immobilized particles on a substrate.
- The strength of the imposed potential was systematically varied.
Main Results:
- Increasing potential strength led to dynamical arrest.
- Particles became trapped in potential minima, slowing dynamics.
- Cooperative motion was hindered, reducing dynamical heterogeneity.
Conclusions:
- The energy landscape critically influences colloidal dynamics.
- Periodic potentials can induce dynamical arrest in colloidal systems.
- Results provide insight into dynamical arrest in complex environments.
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