Self-assembly of active core corona particles into highly ordered and self-healing structures

Area of Science:

• Materials Science
• Soft Matter Physics
• Chemical Engineering

Background:

• Highly ordered structures typically require overcoming significant free-energy barriers, often leading to defects and long annealing times in equilibrium systems.
• Thermodynamic fluctuations are insufficient to overcome these barriers, trapping systems in kinetically hindered states.
• Core corona particles are crucial building blocks in various self-assembly applications.

Purpose of the Study:

• To theoretically investigate the self-assembly of active core corona particles.
• To explore the formation of large-scaled, highly ordered structures induced by particle activity.
• To examine the self-healing capabilities and optimal activity levels for defect-free assembly.

Main Methods:

• Theoretical modeling of active core corona particle interactions.
• Simulations to analyze self-assembly pathways and emergent structures.
• Investigation of the role of activity in overcoming energy barriers and defect dynamics.

Main Results:

• Active core corona particles self-assemble into highly ordered stripe and trimer lattices, surpassing limitations of equilibrium systems.
• The activity-induced ordered structures exhibit spontaneous self-healing of defects.
• An optimal level of particle activity was identified that maximizes the formation of ordered structures.

Conclusions:

• Particle activity provides a viable strategy to overcome energy barriers and achieve highly ordered self-assembled materials.
• The self-healing property of these active structures offers robustness and simplifies material fabrication.
• This research presents a novel design strategy for creating advanced ordered materials using active components.