Nanocones on transparent substrates for investigations in scanning probe microscopes

Fleischer, Monika; Stade, F.; Heeren, A.; Häffner, M.; Braun, Kai; Stanciu, C.; Ehlich, R.; Hörber, J. K. H.; Meixner, Alfred J.; Kern, D. P.

doi:10.1016/j.mee.2008.11.091

Cited by 17 publications

(22 citation statements)

References 3 publications

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“…[22][23][24][25][26][27] In this work arrays of gold nanocones in square lattices are fabricated on a glass substrate coated with a homogeneous 50 nm thick film of indium tin oxide (ITO) to avoid charge accumulation effects during electron beam lithography (EBL). [22][23][24][25][26][27] In this work arrays of gold nanocones in square lattices are fabricated on a glass substrate coated with a homogeneous 50 nm thick film of indium tin oxide (ITO) to avoid charge accumulation effects during electron beam lithography (EBL).…”

Section: Cone Fabricationmentioning

confidence: 99%

Self-aligned placement and detection of quantum dots on the tips of individual conical plasmonic nanostructures

et al. 2015

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Hybrid structures of few or single quantum dots (QDs) coupled to single optical antennas are of prime interest for nano-optical research. The photoluminescence (PL) signal from single nanoemitters, such as QDs, can be enhanced, and their emission characteristics modified, by coupling them to plasmonic nanostructures. Here, a self-aligned technique for placing nanoscale QDs with about 10 nm lateral accuracy and well-defined molecular distances to the tips of individual nanocones is reported. This way the QDs are positioned exactly in the high near-field region that can be created near the cone apex. The cones are excited in the focus of a radially polarized laser beam and the PL signal of few or single QDs on the cone tips is spectrally detected.

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Section: Cone Fabricationmentioning

confidence: 99%

Self-aligned placement and detection of quantum dots on the tips of individual conical plasmonic nanostructures

et al. 2015

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“…As can be seen in Fig. 2(d), this nano-mask is roughly centred on the plateau and has a circular shape, which grants the final conical shape of the plasmonic nanostructure after mask transfer [22][23][24][25][26][27][28]. The height of the pillar as in Fig.…”

Section: Resultsmentioning

confidence: 75%

“…As discussed in [20][21][22][23], nanocones enable efficient light focusing through strong localisation of the plasmon field energy near their tips, which can have a radius of less than 20 nm [24]. The procedure follows previous work, where plasmonic nanocones were fabricated on AFTs by transfer of a platinum mask fabricated by focused electron-beam induced deposition (FEBID) and exploited as TERS probes [25,26].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a plasmonic nanocone on top of an AFM cantilever

Tanirah

Kern

Fleischer

2015

Microelectronic Engineering

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“…[36][37][38][39] The (25 μm) 2 arrays of gold nanocones with different distances between the cones used in this study are fabricated by applying electron beam lithography using PMMA (polymethyl methacrylate) for the preparation of Al 2 O 3 etch masks by a lift-off process. The fabrication processes developed by the authors are based on the transfer of circular etch masks into a gold layer by argon ion milling, during which the conical shape of the nanostructures is formed.…”

Section: Methodsmentioning

confidence: 99%

Capturing molecules with plasmonic nanotips in microfluidic channels by dielectrophoresis

2015

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Over the last decades, different concepts have been established for the use of plasmonic nanostructures in sensing applications. One challenge in this context lies in delivering the analyte of interest to the location of the nanostructures and selectively attaching it to their surfaces. Here we present a method for the collection and concentration of molecules on arrays of metallic nanocones, making use of the high electric field gradients at the nanotips. For this purpose, the nanocones are integrated into a microfluidic channel and used as nanoelectrodes. By applying an AC voltage, dielectrophoresis is used to capture molecules from the channel region near the nanocones. Simulations of the dielectrophoretic forces in the channel are presented as well as experimental proof of the proposed method. After attachment of the molecules, optical read-out techniques can directly be performed on the plasmonic nanostructures.

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Nanocones on transparent substrates for investigations in scanning probe microscopes

Cited by 17 publications

References 3 publications

Self-aligned placement and detection of quantum dots on the tips of individual conical plasmonic nanostructures

Self-aligned placement and detection of quantum dots on the tips of individual conical plasmonic nanostructures

Fabrication of a plasmonic nanocone on top of an AFM cantilever

Capturing molecules with plasmonic nanotips in microfluidic channels by dielectrophoresis

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