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Related Experiment Video

Updated: Jun 27, 2026

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

Published on: April 12, 2019

Probing interfacial equilibration in microsphere crystals formed by DNA-directed assembly.

Anthony J Kim¹, Raynaldo Scarlett, Paul L Biancaniello

¹Department of Chemical and Biomolecular Engineering, The University of Pennsylvania, 220 S. 33rd St., Philadelphia, Pennsylvania 19104, USA.

Nature Materials

|December 2, 2008

Summary

DNA-directed self-assembly of microspheres faces kinetic barriers. Limited particle equilibration before burial impedes the growth of complex nanomaterials.

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Iterative Optimization of DNA Duplexes for Crystallization of SeqA-DNA Complexes

Iterative Optimization of DNA Duplexes for Crystallization of SeqA-DNA Complexes

Published on: November 1, 2012

Area of Science:

Nanotechnology
Materials Science
Biophysics

Background:

Deoxyribonucleic acid (DNA) is a key material for nanoscale self-assembly, enabling the creation of complex structures.
DNA-directed assembly of colloids and nanoparticles offers a pathway to novel meta-materials with unique optical properties.

Purpose of the Study:

Investigate interfacial equilibration in DNA-directed microsphere self-assembly.
Identify kinetic barriers that may impede the formation of complex nanostructures.

Main Methods:

Experimental study of DNA-directed microsphere self-assembly.
Introduction of single-nucleotide differences in DNA strands to create an energy penalty.
Detailed simulations of the self-assembly process.

Main Results:

A reproducible segregation coefficient was observed due to the energy penalty for impurity sphere insertion.
Experimental conditions limit particle equilibration to a few nearest neighbors before burial by the growth front.

Conclusions:

Kinetic limitations, specifically restricted particle equilibration, pose a significant impediment to the growth of complex DNA-directed nanostructures.
Understanding these kinetic barriers is crucial for designing and fabricating advanced meta-materials.