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Linko V, Shen B, Tapio K, Toppari JJ, Kostiainen MA, Tuukkanen S. One-step large-scale deposition of salt-free DNA origami nanostructures. Sci Rep 2015; 5:15634. [PMID: 26492833 PMCID: PMC4616047 DOI: 10.1038/srep15634] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 09/28/2015] [Indexed: 01/13/2023] Open
Abstract
DNA origami nanostructures have tremendous potential to serve as versatile platforms in self-assembly -based nanofabrication and in highly parallel nanoscale patterning. However, uniform deposition and reliable anchoring of DNA nanostructures often requires specific conditions, such as pre-treatment of the chosen substrate or a fine-tuned salt concentration for the deposition buffer. In addition, currently available deposition techniques are suitable merely for small scales. In this article, we exploit a spray-coating technique in order to resolve the aforementioned issues in the deposition of different 2D and 3D DNA origami nanostructures. We show that purified DNA origamis can be controllably deposited on silicon and glass substrates by the proposed method. The results are verified using either atomic force microscopy or fluorescence microscopy depending on the shape of the DNA origami. DNA origamis are successfully deposited onto untreated substrates with surface coverage of about 4 objects/mm(2). Further, the DNA nanostructures maintain their shape even if the salt residues are removed from the DNA origami fabrication buffer after the folding procedure. We believe that the presented one-step spray-coating method will find use in various fields of material sciences, especially in the development of DNA biochips and in the fabrication of metamaterials and plasmonic devices through DNA metallisation.
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Affiliation(s)
- Veikko Linko
- Aalto University, Department of Biotechnology and Chemical Technology, Biohybrid Materials, Espoo, P.O. Box 16100, FI-00076 Aalto, Finland
| | - Boxuan Shen
- University of Jyvaskyla, Department of Physics, Nanoscience Center, Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - Kosti Tapio
- University of Jyvaskyla, Department of Physics, Nanoscience Center, Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - J. Jussi Toppari
- University of Jyvaskyla, Department of Physics, Nanoscience Center, Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - Mauri A. Kostiainen
- Aalto University, Department of Biotechnology and Chemical Technology, Biohybrid Materials, Espoo, P.O. Box 16100, FI-00076 Aalto, Finland
| | - Sampo Tuukkanen
- Tampere University of Technology, Department of Automation Science and Engineering, Tampere, P.O. Box 692, FI-33101, Finland
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Shen B, Linko V, Tapio K, Kostiainen MA, Toppari JJ. Custom-shaped metal nanostructures based on DNA origami silhouettes. NANOSCALE 2015; 7:11267-72. [PMID: 26066528 DOI: 10.1039/c5nr02300a] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The DNA origami technique provides an intriguing possibility to develop customized nanostructures for various bionanotechnological purposes. One target is to create tailored bottom-up-based plasmonic devices and metamaterials based on DNA metallization or controlled attachment of nanoparticles to the DNA designs. In this article, we demonstrate an alternative approach: DNA origami nanoshapes can be utilized in creating accurate, uniform and entirely metallic (e.g. gold, silver and copper) nanostructures on silicon substrates. The technique is based on developing silhouettes of the origamis in the grown silicon dioxide layer, and subsequently using this layer as a mask for further patterning. The proposed method has a high spatial resolution, and the fabrication yields can approach 90%. The approach allows a cost-effective, parallel, large-scale patterning on a chip with fully tailored metallic nanostructures; the DNA origami shape and the applied metal can be specifically chosen for each conceivable implementation.
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Affiliation(s)
- Boxuan Shen
- University of Jyvaskyla, Department of Physics, Nanoscience Center, P.O. Box 35, FI-40014. and University of Jyväskylä, Finland.
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Shen B, Linko V, Dietz H, Toppari JJ. Dielectrophoretic trapping of multilayer DNA origami nanostructures and DNA origami-induced local destruction of silicon dioxide. Electrophoresis 2014; 36:255-62. [DOI: 10.1002/elps.201400323] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 08/14/2014] [Accepted: 08/25/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Boxuan Shen
- Department of Physics; Nanoscience Center; University of Jyväskylä; Jyväskylä Finland
| | - Veikko Linko
- Physik Department; Walter Schottky Institute; Technische Universität München; Garching Germany
- Biohybrid Materials, Department of Biotechnology and Chemical Technology; Aalto University; Aalto Espoo Finland
- Molecular Materials, Department of Applied Physics; Aalto University; Aalto Espoo Finland
| | - Hendrik Dietz
- Physik Department; Walter Schottky Institute; Technische Universität München; Garching Germany
| | - J. Jussi Toppari
- Department of Physics; Nanoscience Center; University of Jyväskylä; Jyväskylä Finland
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