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Updated: Oct 4, 2025
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DNA Origami-Mediated Substrate Nanopatterning of Inorganic Structures for Sensing Applications
Published on: September 27, 2019
11.7K
Shape-Changing DNA-Linked Nanoparticle Films Dictated by Lateral and Vertical Patterns.
Jongwook Kim1, Sunghee Lee1, Jisu Choi1
1Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, South Korea.
Advanced Materials (Deerfield Beach, Fla.)
|February 4, 2022
Summary
Researchers created nanoparticle films with unique patterns using DNA self-assembly and light. These active nanomaterials can change shape and structure, enabling new possibilities for smart materials.
Area of Science:
- Nanotechnology
- Materials Science
- Biomolecular Engineering
Background:
- Controlled self-assembly of nanoscale building blocks is crucial for creating advanced nanomaterials.
- Structural anisotropy in nanostructures enables dynamic transformations for active nanomaterials.
Purpose of the Study:
- To develop a method for fabricating free-standing nanoparticle films with both vertical and lateral heterogeneity.
- To demonstrate spatiotemporal structural transformations in active nanomaterials.
Main Methods:
- Utilizing DNA-directed layer-by-layer (LbL) self-assembly to construct multicomponent plasmonic nanoparticle films.
- Employing top-down photothermal patterning for on-demand lateral patterning and controlled vertical depth inscription.
- Leveraging distinct plasmonic properties of nanospheres and nanorods for selective photopatterning.
Main Results:
- Fabrication of free-standing nanoparticle films with precisely controlled vertical and lateral heterogeneity.
- Demonstration of selective photopatterning based on distinct plasmonic properties of constituent nanoparticles.
- Observation of complex morphing actions in photopatterned films guided by inscribed patterns and DNA information.
Conclusions:
- The combined DNA self-assembly and photothermal patterning approach enables the creation of sophisticated active nanomaterials.
- This method allows for the programming of spatiotemporal structural transformations in nanoparticle films.
- The developed technique offers new avenues for designing advanced functional nanomaterials with dynamic properties.
