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Dynamic-kinetic crossovers in colloidal and multiphase systems induced by nanoscale interfacial features
Dhiraj Nandyala1, Carlos E Colosqui1,2,3
1Mechanical Engineering Department, Stony Brook University, Stony Brook, NY 11794, USA. carlos.colosqui@stonybrook.edu.
Soft Matter
|November 25, 2025
Summary
Colloidal and multiphase systems transition from dynamic to slow kinetic regimes near equilibrium. This crossover, driven by nanoscale interfacial features, enables programmable transport control in diverse systems.
Area of Science:
- Colloid and surface science
- Soft matter physics
- Chemical engineering
Background:
- Multiphase systems exhibit dynamic regimes governed by classical transport equations.
- Near equilibrium, a transition to anomalously slow relaxation (kinetic regime) occurs.
- This crossover is linked to energy barriers from nanoscale interfacial features.
Purpose of the Study:
- To review a unified framework for predicting and controlling the dynamic-to-kinetic regime crossover.
- To highlight the role of nanoscale feature surface area to system dimension ratio in transport engineering.
- To explore strategies for programmable transport control in colloidal and multiphase systems.
Main Methods:
- Review of experimental observations across diverse multiphase systems.
- Analysis of theoretical frameworks describing regime crossovers.
- Examination of the influence of nanoscale interfacial features on transport properties.
Main Results:
- A regime crossover from dynamic to kinetic behavior is experimentally observed in multiphase systems.
- Large energy barriers from nanoscale features at interfaces induce this crossover.
- The ratio of nanoscale surface area to microscale dimensions is a key parameter for transport engineering.
Conclusions:
- A unified framework exists to predict and control the dynamic-kinetic crossover.
- Exploiting the dynamic-kinetic duality offers programmable transport control.
- Engineering interfacial features provides a means to tailor transport properties in colloidal and multiphase systems.
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