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Updated: Aug 5, 2026
09:26
Synthesis and Characterization of Supramolecular Colloids
Published on: April 22, 2016
Activity enhances transport while competing interactions preserve structure in colloidal microphase formers
Horacio Serna1, José Martín-Roca2, Ariel G Meyra3
1Instituto de Química Física Blas Cabrera, Consejo Superior de Investigaciones Científicas (CSIC), Calle Serrano 119, 28006 Madrid, Spain.
The Journal of Chemical Physics
|August 3, 2026
Summary
Active colloidal suspensions with short-range attraction and long-range repulsion (SALR) show structural transitions similar to passive systems. However, activity enhances particle mobility, decoupling structure from dynamics in these non-equilibrium systems.
Area of Science:
- Soft matter physics
- Colloidal science
- Non-equilibrium statistical mechanics
Background:
- Colloidal models with short-range attraction and long-range repulsion (SALR) exhibit complex equilibrium phase behavior.
- Understanding the dynamics of active colloidal systems is crucial for various applications.
Purpose of the Study:
- To investigate the dynamical phase behavior of active colloidal suspensions with SALR interactions.
- To compare the structural and transport properties of active and passive SALR systems.
Main Methods:
- Brownian dynamics simulations were employed.
- The effects of varying self-propulsion forces on particle dynamics were analyzed.
- Transport properties and structural transitions were examined.
Main Results:
- Structural transitions in active SALR suspensions mirror those in passive systems with increased temperature.
- A mismatch in transport properties was observed between active and passive systems with similar structures.
- Increasing particle activity enhanced mobility while preserving structure.
Conclusions:
- Activity in SALR systems induces a decoupling of structure and dynamics.
- SALR potentials demonstrate structural memory even under non-equilibrium conditions.
- These findings offer insights into the behavior of active soft matter.
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