Fabrication of Metal Nanostructures with Programmable Length and Patterns Using a Modular DNA Platform
| Autor: | Ralf Seidel, Josephine Teske, Seham Helmi, Jingjing Ye |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Nanostructure
Fabrication Materials science Metal Nanoparticles Nanoparticle Bioengineering Nanotechnology 02 engineering and technology medicine.disease_cause Addressability Nanomaterials Mold medicine DNA origami General Materials Science business.industry Mechanical Engineering Fungi DNA General Chemistry Modular design 021001 nanoscience & nanotechnology Condensed Matter Physics Nanostructures Gold 0210 nano-technology business |
| Zdroj: | Nano Letters. 19:2707-2714 |
| ISSN: | 1530-6992 1530-6984 |
| Popis: | Recently introduced DNA nanomolds allow the shape-controlled growth of metallic nanoparticles. Here we demonstrate that this approach can be used to fabricate longer linear metal nanostructures of controlled lengths and patterns. To this end, we establish a set of different interfaces that enable mold interactions with high affinity and specificity. These interfaces enable and control the modular assembly of mold monomers into larger mold superstructure with programmable dimension in which each mold monomer remains uniquely addressable. Preloading the molds with nanoparticle seeds subsequently allows the growth of linear gold nanostructures whose lengths are controlled by the DNA structure. Exploiting the addressability of individual mold monomers furthermore allows achievement of site-specific metallization, that is, to create defined metal patterns. We think that the introduced approach provides a useful basis to fabricate nanomaterials with complex shapes and material composition in a fully programmable and modular fashion. |
| Databáze: | OpenAIRE |
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