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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles

Origami Inspired Self-assembly of Patterned and Reconfigurable Particles

Published on: February 4, 2013

Self-assembly of three-legged patchy particles into polyhedral cages.

Wouter K den Otter¹, Marten R Renes, W J Briels

¹Computational Biophysics Group, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands. w.k.denotter@utwente.nl

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|March 11, 2011

Summary

Researchers simulated rigid three-legged blocks self-assembling into fullerene-like cages. A specific binding interaction and torsional potential were key for forming closed polyhedral structures with controlled size.

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Area of Science:

Computational materials science
Chemical physics
Biophysics

Background:

Self-assembly is a fundamental process in nature and materials science.
Polyhedral cages, such as fullerenes, have unique structural and electronic properties.
Understanding the principles of self-assembly can lead to the design of novel nanomaterials.

Purpose of the Study:

To investigate the self-assembly of rigid three-legged building blocks into polyhedral cages using simulations.
To identify the key interaction potentials governing the formation of closed cages.
To explore the relationship between particle structure and the size distribution of the assembled cages.

Main Methods:

Patchy particle simulations were employed to model the self-assembly process.
A four-site anisotropic interaction potential was developed to mimic specific leg binding.
Torsional potentials were introduced to account for asymmetry in binding interactions.

Main Results:

The simulations successfully demonstrated the self-assembly of rigid blocks into fullerene-like cages.
Anti-parallel binding of overlapping legs formed pentagonal and hexagonal faces.
A torsional potential was found to be crucial for the formation of closed cages.
The pucker angle of the particle significantly influenced the size distribution of the buckyballs.
Self-assembly followed a nucleation-and-growth mechanism with high closure success.

Conclusions:

Rigid three-legged building blocks can self-assemble into closed polyhedral cages.
Anisotropic interactions and torsional potentials are critical for successful cage formation.
The pucker angle is a key parameter for controlling the size of self-assembled cages.
Nature utilizes similar principles in biological systems, such as clathrin triskelions in endocytosis.