A One-Component Patchy-Particle Icosahedral Quasicrystal

Area of Science:

• Materials Science
• Crystallography
• Soft Matter Physics

Background:

• Icosahedral quasicrystals (IQCs) are complex structures with limited realization beyond metallic alloys.
• Designing simple building blocks for IQC formation is crucial for broader applications.

Purpose of the Study:

• To introduce a one-component patchy-particle system capable of forming face-centered IQCs.
• To explore the self-assembly mechanisms and properties of these novel IQCs.

Main Methods:

• Computational simulations of one-component patchy-particle systems.
• Analysis of orientational and positional order using higher-dimensional methods.
• Thermodynamic analysis comparing IQCs with periodic approximants.

Main Results:

• Successful formation of interconnected icosahedral networks, yielding face-centered IQCs.
• Directional bonding promotes icosahedral orientational and quasiperiodic positional order.
• IQCs exhibit entropic stabilization via phason disorder, with energies comparable to periodic structures.

Conclusions:

• One-component patchy particles provide a viable route to simple, self-assembled IQCs.
• These IQCs possess favorable properties, including potential photonic band gaps.
• The findings suggest practical realization using protein design or DNA origami technologies.