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Updated: Feb 15, 2026
11:09
Grafting Multiwalled Carbon Nanotubes with Polystyrene to Enable Self-Assembly and Anisotropic Patchiness
Published on: April 1, 2018
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Phase behavior and bulk structural properties of a microphase former with anisotropic competing interactions: A
1Institute for Theoretical Physics, University of Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany.
Physical Review. E
|January 20, 2018
Summary
This study explores competing forces in particle systems. It reveals novel phase diagrams with reentrant clustering and liquid-gas separation, even at low densities.
Area of Science:
- Physical Chemistry
- Statistical Mechanics
- Soft Matter Physics
Background:
- Competing interactions are crucial for self-assembly and phase behavior in soft matter.
- Previous models focused on isotropic interactions, limiting understanding of anisotropic effects.
Purpose of the Study:
- To investigate phase behavior in systems with competing short-range anisotropic attraction and long-range repulsive forces.
- To explore the impact of anisotropy on bulk phase formation and microphase separation.
Main Methods:
- Utilizing classical density functional theory (DFT).
- Modeling anisotropic attraction with Wertheim's first-order perturbation theory for patchy particles.
- Approximating long-range repulsion using a Yukawa potential within a mean-field framework.
Main Results:
- Observed rich phase diagrams featuring reentrant clustering and liquid-gas binodals.
- Predicted stable inhomogeneous bulk phases at very low packing fractions.
- Demonstrated unique phase behavior arising from anisotropic interactions.
Conclusions:
- Anisotropic attractive forces significantly alter phase behavior compared to isotropic systems.
- The model successfully predicts complex phase diagrams, including phenomena not seen with isotropic interactions.
- This work provides insights into the design principles for materials with tunable self-assembly properties.
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