Topological Assembly of a Deployable Hoberman Flight Ring from DNA

Area of Science:

• Nanotechnology
• Materials Science
• Biotechnology

Background:

• Deployable geometries are auxetic structures that maintain shape during expansion/contraction.
• These structures have significant applications in nature and engineering.
• Deployable nanostructures have not been previously demonstrated.

Purpose of the Study:

• To demonstrate the feasibility of creating deployable nanostructures.
• To explore topological behaviors in nanoscale auxetic structures.
• To introduce a novel platform for bioengineering applications.

Main Methods:

• Utilized DNA origami to construct a deployable nanostructure.
• Designed a planar structure resembling a Hoberman sphere, termed a DNA flight ring.
• Employed topologically assembled triangles in a two-layer configuration.

Main Results:

• Successfully created a deployable DNA flight ring capable of switching between open and closed states.
• The structure exhibits auxetic reconfiguration with negative Poisson's ratios.
• The origami topology is identified as a trefoil knot.

Conclusions:

• This study confirms the feasibility of deployable nanostructures.
• Provides a versatile platform for studying topological properties at the nanoscale.
• Opens new avenues for innovation in bioengineering and nanotechnology.