Multi-Domains in a Single Lattice Formed by DNA Self-Assembly

Area of Science:

• Nanotechnology
• Biomolecular Engineering
• Materials Science

Background:

• DNA self-assembly enables the creation of complex nanostructures and patterned lattices.
• Fabricating multi-domain patterns within a single lattice is challenging but offers increased pattern density.

Purpose of the Study:

• To introduce a method for constructing double- and quadruple-domain DNA lattices with specific patterns.
• To demonstrate the feasibility of creating multi-domain patterns in a single lattice using DNA self-assembly and boundaries.

Main Methods:

• Utilized DNA tiles with and without hairpins to create ON, OFF, and ST (stripe) patterns.
• Designed linear and cross boundaries to separate domains within double- and quadruple-domain lattices.
• Verified fabricated multi-domain patterns using atomic force microscopy.

Main Results:

• Successfully constructed double- and quadruple-domain lattices with distinct patterns (e.g., ON/OFF, OFF/ST/OFF/ON).
• Observed different pattern growth directions in each domain due to boundary implementation.
• Experimental results closely matched the designed multi-domain lattice patterns.

Conclusions:

• Boundaries effectively control pattern formation and separation in DNA lattices.
• The proposed method allows for increased pattern density and information storage in DNA nanostructures.
• Future work can extend this approach to higher-order multi-domain lattices, such as hexadomain designs.