How to build nanoblocks using DNA scaffolds

TL;DR

This paper proposes a DNA scaffold method for self-assembling nanoblocks with multiple particle types, demonstrating experimental feasibility and potential for hierarchical nanostructure assembly.

Contribution

It introduces a novel DNA-based approach for assembling multi-colored particle clusters with permutation degrees of freedom, expanding nanostructure design possibilities.

Findings

Self-assembly of colored particle clusters is experimentally feasible.

DNA scaffolds enable permutation of particle types within clusters.

Potential for hierarchical self-assembly of complex nanostructures.

Abstract

In recent years there have been a number of proposals to utilize the specificity of DNA based interactions for potential applications in nanoscience. One interesting direction is the self-assembly of micro- and nanoparticle clusters using DNA scaffolds. In this letter we consider a DNA scaffold method to self-assemble clusters of "colored" particles. Stable clusters of microspheres have recently been produced by an entirely different method. Our DNA based approach self-assembles clusters with additional degrees of freedom associated with particle permutation. We demonstrate that in the non-equilibrium regime of irreversible binding the self-assembly process is experimentally feasible. These color degrees of freedom may allow for more diverse intercluster interactions essential for hierarchical self-assembly of larger structures.