Plasmonic Nanofabrication by Long-Range Excitation Transfer via DNA Nanowire

Wirth, Janina; Garwe, F.; Hähnel, G.; Csáki, Andrea; Jahr, Norbert; Stránik, Ondrej; Paa, W.; Fritzsche, Wolfgang

doi:10.1021/nl104269x

Cited by 22 publications

(32 citation statements)

References 53 publications

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“…Under certain conditions, transport of this discussed laser-based excitation of nanoparticles can be observed along DNA bundles over distances of several micrometres. This effect is documented in nanometre-deep trenches along the original position of the DNA bundles, these bundles themselves having disappeared after irradiation [63].…”

Section: Single Nanoparticle Applications (A) Biosensormentioning

confidence: 88%

Molecular plasmonics: light meets molecules at the nanoscale

Csáki

Schneider

Wirth

et al. 2011

Phil. Trans. R. Soc. A.

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Certain metal nanoparticles exhibit the effect of localized surface plasmon resonance when interacting with light, based on collective oscillations of their conduction electrons. The interaction of this effect with molecules is of great interest for a variety of research disciplines, both in optics and in the life sciences. This paper attempts to describe and structure this emerging field of molecular plasmonics, situated between the molecular world and plasmonic effects in metal nanostructures, and demonstrates the potential of these developments for a variety of applications.

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Section: Single Nanoparticle Applications (A) Biosensormentioning

confidence: 88%

Molecular plasmonics: light meets molecules at the nanoscale

Csáki

Schneider

Wirth

et al. 2011

Phil. Trans. R. Soc. A.

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“…NPs are placed on a photo and electron sensitive substrate such as Polymethylmethacrylat (PMMA) (used in the photolithographic fabrication process) and illuminated. This transfers the NP pattern on the PMMA layer with nanometer resolution [5]. The limiting resolution of this technique is the size of the NPs, which can still effectively adsorb the light.…”

Section: Plasmonic Nanofabrication By Nanoparticles and Dna Nanowiresmentioning

confidence: 99%

“…In our work we showed, that even smaller objects such as DNA strands can be used for such nanostructuring. In this case, NPs were used as a light antenna, which couples the illumination light through the near field interaction into the bundle of DNA [5]. This energy then propagates through the DNA bundle and interacts with underlying PMMA layer.…”

Section: Plasmonic Nanofabrication By Nanoparticles and Dna Nanowiresmentioning

confidence: 99%

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Bioanalytics using single plasmonic nanostructures

Stránik

Schneider

Jahr

et al. 2013

Colloidal Nanocrystals for Biomedical Applications VIII

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Plasmonic nanostructures promise to provide sensing capabilities with the potential for sensitive and robust assays in a high parallelization. We present here the use of individual nanostructures for the detection and manipulation of biomolecules such as DNA based on optical approaches [1].The change in localized surface plasmon resonance of individual metal nanoparticles is utilized to monitor the binding of DNA directly or via DNA-DNA interaction. The influence of different size (length) as well as position (distance to the particle surface) is thereby studied [2].Holes in a Cr layer present another interesting approach for bioanalytics. They are used to detect plasmonic nanoparticles as labels or to sense the binding of DNA on these particles. This hybrid system of hole and particle allows for simple (just using RGB-signals of a CCD [3]) but a highly sensitive (one nanoparticle sensitivity) detection. On the other hand, the binding of molecular layers around the particles can be detected using spectroscopic features of just an individual one of these systems.Besides sensing, individual plasmonic nanostructures can be also used to manipulate single biomolecular structures such as DNA. Attached particles can be used for local destruction [4] or cutting as well as coupling of energy into (and guiding along) the molecular structure [5].

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“…These factors can be adjusted by the chemical synthesis. Different applications as biochip-or cell-label [4,5], as optical antenna for manipulation of biomolecules [6,7], or as sensor transducer [8] are based on this potential.…”

Section: Introductionmentioning

confidence: 99%

High‐Throughput Synthesis of Uniform Silver Seed Particles by a Continuous Microfluidic Synthesis Platform

et al. 2015

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Controlled silver particle geometries require at least a synthesis in two steps which strongly differ in their reaction kinetics. For the first step, the very fast seed formation, chaotic advection-based micromixers are tested in combination with a batch reactor for the growth step. Nanoparticles with narrow size distribution and excellent shape uniformity can be prepared in large batches. To achieve a highly reproducible and homogeneous particle solution, a microfluidic system containing three different micromixers for optimal mixing of the chemical precursors is established, allowing stringent control of every synthesis step. The produced silver particles can be used as seeds for forming anisotropic particles. Their further potential is demonstrated by preparation of anisotropic silver triangles. The thus generated seed particles are better suited for growing to triangles than those from conventional batch synthesis.

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Plasmonic Nanofabrication by Long-Range Excitation Transfer via DNA Nanowire

Cited by 22 publications

References 53 publications

Molecular plasmonics: light meets molecules at the nanoscale

Molecular plasmonics: light meets molecules at the nanoscale

Bioanalytics using single plasmonic nanostructures

High‐Throughput Synthesis of Uniform Silver Seed Particles by a Continuous Microfluidic Synthesis Platform

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