DNA origami mediated electrically connected metal—semiconductor junctions

Aryal, Basu R.; Ranasinghe, Dulashani R.; Westover, Tyler R.; Calvopiña, Diana G.; Davis, Robert C.; Harb, John N.

doi:10.1007/s12274-020-2672-5

Cited by 29 publications

(61 citation statements)

References 36 publications

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“…In particular the introduction of DNA origami, [3] which enables the high‐yield synthesis of almost arbitrary nanoscale shapes has stimulated intense research efforts that, in the last few years, culminated in numerous strategies for transferring these DNA origami shapes into various organic [4,5] and inorganic materials [6,7,8] . Although some of these attempts have resulted in new functional devices, [8–11] their functionality so far relies on the properties of either a single nanostructure [8–11] or a random ensemble of identical nanostructures [7] . Up to now, however, it has been rather challenging to generate well‐defined arrangements of DNA origami nanostructures and transfer such templates into functional circuits or lattices with macroscopic dimensions to enable large‐scale device integration.…”

Section: Introductionmentioning

confidence: 99%

Scaling Up DNA Origami Lattice Assembly

Yang

Shen

Kostiainen

et al. 2021

Chemistry A European J

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The surface‐assisted hierarchical assembly of DNA origami nanostructures is a promising route to fabricate regular nanoscale lattices. In this work, the scalability of this approach is explored and the formation of a homogeneous polycrystalline DNA origami lattice at the mica‐electrolyte interface over a total surface area of 18.75 cm2 is demonstrated. The topological analysis of more than 50 individual AFM images recorded at random locations over the sample surface showed only minuscule and random variations in the quality and order of the assembled lattice. The analysis of more than 450 fluorescence microscopy images of a quantum dot‐decorated DNA origami lattice further revealed a very homogeneous surface coverage over cm2 areas with only minor boundary effects at the substrate edges. At total DNA costs of € 0.12 per cm2, this large‐scale nanopatterning technique holds great promise for the fabrication of functional surfaces.

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Section: Introductionmentioning

confidence: 99%

Scaling Up DNA Origami Lattice Assembly

Yang

Shen

Kostiainen

et al. 2021

Chemistry A European J

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“…A thermal evaporator was used to deposit a 7 nm chromium adhesion layer, followed by deposition of 50 nm of gold. Lift-off was done by soaking along with shaking (10 min) and sonicating (1 min) in NMP to form the desired contact pads according to previously published procedures [ 41 ].…”

Section: Methodsmentioning

confidence: 99%

“…To connect metallized DNA nanotube structures to gold contact pads, tungsten traces (~25 nm wide and using the line dose setting for a height of 1 µm) were patterned using EBID at 5 kV and 0.17 nA in a Helios Nanolab 600 SEM (FEI, Hillsboro, OR, USA) [ 41 , 42 ]. In order to link the thinner tungsten traces to the gold pads, tungsten traces (~25 nm wide and using the line dose setting for a height of 3 µm) were written from the thin traces to the large gold pads.…”

Section: Methodsmentioning

confidence: 99%

Seeding, Plating and Electrical Characterization of Gold Nanowires Formed on Self-Assembled DNA Nanotubes

et al. 2020

Self Cite

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Self-assembly nanofabrication is increasingly appealing in complex nanostructures, as it requires fewer materials and has potential to reduce feature sizes. The use of DNA to control nanoscale and microscale features is promising but not fully developed. In this work, we study self-assembled DNA nanotubes to fabricate gold nanowires for use as interconnects in future nanoelectronic devices. We evaluate two approaches for seeding, gold and palladium, both using gold electroless plating to connect the seeds. These gold nanowires are characterized electrically utilizing electron beam induced deposition of tungsten and four-point probe techniques. Measured resistivity values for 15 successfully studied wires are between 9.3 × 10−6 and 1.2 × 10−3 Ωm. Our work yields new insights into reproducible formation and characterization of metal nanowires on DNA nanotubes, making them promising templates for future nanowires in complex electronic circuitry.

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“…Especially alluring are the novel techniques combining DNA self-assembly with other modern nanofabrication techniques. It has already been shown that DNA-based nanostructure can serve as a great template, e.g., for nanolithography [ 44 ], or for fabrication of semiconducting electrical devices [ 165 ]. It is therefore essential for science and technology to continuously keep improving the development of DNA nanotechnology and explore its possibilities beyond the applications so far.…”

Section: Future Prospectivementioning

confidence: 99%

Constructing Large 2D Lattices Out of DNA-Tiles

et al. 2021

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The predictable nature of deoxyribonucleic acid (DNA) interactions enables assembly of DNA into almost any arbitrary shape with programmable features of nanometer precision. The recent progress of DNA nanotechnology has allowed production of an even wider gamut of possible shapes with high-yield and error-free assembly processes. Most of these structures are, however, limited in size to a nanometer scale. To overcome this limitation, a plethora of studies has been carried out to form larger structures using DNA assemblies as building blocks or tiles. Therefore, DNA tiles have become one of the most widely used building blocks for engineering large, intricate structures with nanometer precision. To create even larger assemblies with highly organized patterns, scientists have developed a variety of structural design principles and assembly methods. This review first summarizes currently available DNA tile toolboxes and the basic principles of lattice formation and hierarchical self-assembly using DNA tiles. Special emphasis is given to the forces involved in the assembly process in liquid-liquid and at solid-liquid interfaces, and how to master them to reach the optimum balance between the involved interactions for successful self-assembly. In addition, we focus on the recent approaches that have shown great potential for the controlled immobilization and positioning of DNA nanostructures on different surfaces. The ability to position DNA objects in a controllable manner on technologically relevant surfaces is one step forward towards the integration of DNA-based materials into nanoelectronic and sensor devices.

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DNA origami mediated electrically connected metal—semiconductor junctions

Cited by 29 publications

References 36 publications

Scaling Up DNA Origami Lattice Assembly

Scaling Up DNA Origami Lattice Assembly

Seeding, Plating and Electrical Characterization of Gold Nanowires Formed on Self-Assembled DNA Nanotubes

Constructing Large 2D Lattices Out of DNA-Tiles

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