Plasmon nano-optical tweezers

Juan, Mathieu L.; Righini, Maurizio; Quidant, Romain

doi:10.1038/nphoton.2011.56

Cited by 1,308 publications

(956 citation statements)

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“…The former could overcome the traditional diffraction limit in dielectric optics and be the key approach to overcoming the bottleneck of the miniaturization of nanophotonic devices and large-scale on-chip integrated circuits for next-generation information technology. [5][6][7][8][9][10][11] The extremely enhanced EM field caused by the latter has great application values in various fields, such as surface-enhanced spectrum, [12][13][14][15] surface plasmon resonance sensors, [16][17][18][19] ultra transmission, 20,21 plasmonic trapping, 22,23 plasmonic-enhanced emission, 24,25 quantum communication, 26,27 super-resolution microscopy, 28 cloaking, 29 photothermal cancer therapy, 30,31 steam generation, 30,32,33 holography, 34 photovoltaics [35][36][37] and water splitting. [38][39][40] One of the most promising applications of SPPs, especially localized SPPs, is surface-enhanced Raman scattering (SERS), which has been studied both theoretically and experimentally for many decades.…”

Section: Introductionmentioning

confidence: 99%

Nanowire-supported plasmonic waveguide for remote excitation of surface-enhanced Raman scattering

et al. 2014

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Due to its amazing ability to manipulate light at the nanoscale, plasmonics has become one of the most interesting topics in the field of light-matter interaction. As a promising application of plasmonics, surface-enhanced Raman scattering (SERS) has been widely used in scientific investigations and material analysis. The large enhanced Raman signals are mainly caused by the extremely enhanced electromagnetic field that results from localized surface plasmon polaritons. Recently, a novel SERS technology called remote SERS has been reported, combining both localized surface plasmon polaritons and propagating surface plasmon polaritons (PSPPs, or called plasmonic waveguide), which may be found in prominent applications in special circumstances compared to traditional local SERS. In this article, we review the mechanism of remote SERS and its development since it was first reported in 2009. Various remote metal systems based on plasmonic waveguides, such as nanoparticle-nanowire systems, single nanowire systems, crossed nanowire systems and nanowire dimer systems, are introduced, and recent novel applications, such as sensors, plasmon-driven surface-catalyzed reactions and Raman optical activity, are also presented. Furthermore, studies of remote SERS in dielectric and organic systems based on dielectric waveguides remind us that this useful technology has additional, tremendous application prospects that have not been realized in metal systems.

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Section: Introductionmentioning

confidence: 99%

Nanowire-supported plasmonic waveguide for remote excitation of surface-enhanced Raman scattering

et al. 2014

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“…In principle, any of these materials can be subjected to a variety of chemical reactions under a suitable atmosphere to fabricate nanostructures from a virtually inexhaustible list of material compositions. The fabricated nanostructures can find applications in plasmonics 21 , plasmonic nanolithography 22 , photon detection 23 , nanophotonics 24 , memristors 25 and metallic nanostructures 26 for nanoelectronics, control of cell behaviour through patterned surfaces 27 and in low-cost fabrication of highly ordered TiO 2 structures, which have been shown to significantly increase the efficiency of dye-sensitized solar cells 28 .…”

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confidence: 99%

Nonlinear laser lithography for indefinitely large-area nanostructuring with femtosecond pulses

Öktem¹,

Pavlov²,

İlday³

et al. 2013

Nature Photon

316

211

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Dynamical systems based on the interplay of nonlinear feedback mechanisms are ubiquitous in nature [1][2][3][4][5] . Well-understood examples from photonics include mode locking 6 and a broad class of fractal optics 7 , including self-similarity 8 . In addition to the fundamental interest in such systems, fascinating technical functionalities that are difficult or even impossible to achieve with linear systems can emerge naturally from them 7 if the right control tools can be applied. Here, we demonstrate a method that exploits positive nonlocal feedback to initiate, and negative local feedback to regulate, the growth of ultrafast laser-induced metal-oxide nanostructures with unprecedented uniformity, at high speed, low cost and on non-planar or flexible surfaces. The nonlocal nature of the feedback allows us to stitch the nanostructures seamlessly, enabling coverage of indefinitely large areas with subnanometre uniformity in periodicity. We demonstrate our approach through the fabrication of titanium dioxide and tungsten oxide nanostructures, but it can also be extended to a large variety of other materials.The fabrication of nanostructures on surfaces is of paramount importance in nanotechnology and materials science 9 . There are several established techniques, including photolithography, electron-beam lithography, imprint lithography 10 and laser interference lithography 11 , as well as non-conventional approaches such as selfassembly 12 and direct laser writing 13 . These techniques require either high-cost, complex systems or offer limited flexibility. An alternative flexible and potentially very low-cost method is laserinduced periodic surface structuring (LIPSS). The first observation of LIPSS dates back to 1965 14 . However, after almost 50 years and a large body of published work that has demonstrated LIPSS on various metals, semiconductors and glasses [15][16][17][18][19] , the method has not found widespread use due to the stubborn problem of quality control 18,19 .Despite the evident role of self-assembly in the LIPSS process, uniformity and long-range order remain poor, a problem we identified as originating from the fact that the structures are initiated from multiple seed locations concurrently and independently, thereby producing an irregular pattern. Because the process is irreversible, without self-correction, these irregularities become frozen. Our solution to this relies on carefully exploiting feedback mechanisms to tightly regulate the formation of nanostructures induced by ultrashort pulses. This process can be summarized in three steps.(1) The laser beam, with a peak intensity close to the ablation threshold for titanium, is focused on a titanium surface, where it is scattered by existing nanostructures or any surface defects 15 . The interference of the scattered and incident fields leads to intensity variations in the immediate neighbourhood of the scattering point. (2) At points where the threshold intensity for ablation is exceeded, titanium reacts rapidly with O 2 from the air, form...

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“…1 In particular, optical tweezers, 2 antennas, 3,4 lasers, 5 photodetectors, 6 or biochemical sensing platforms 7,8 have been scaled down to the nanometer range. However, their performance are limited by the short lifetimes of surface plasmon resonances.…”

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confidence: 99%

Plasmonic Radiance: Probing Structure at the Ångström Scale with Visible Light

et al. 2013

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Plasmonic modes with long radiative lifetimes combine strong nanoscale light confinement with a narrow spectral line width carrying the signature of Fano resonances, making them very promising for nanophotonic applications such as sensing, lasing, and switching. Their coupling to incident radiation, also known as radiance, determines their optical properties and optimal use in applications. In this work, we theoretically and experimentally demonstrate that the radiance of a plasmonic mode can be classified into three different regimes. In the weak coupling regime, the line shape exhibits remarkable sensitivity to the dielectric environment. We show that geometrical displacements and deformations at the Ångstrom scale can be detected optically by measuring the radiance. In the intermediate regime, the electromagnetic energy stored in the mode is maximal, with large electric field enhancements that can be exploited in surface enhanced spectroscopy applications. In the strong coupling regime, the interaction can result in hybridized modes with tunable energies. KEYWORDS: Fano resonances, electromagnetically induced transparency, plasmonic nanosensors, surface enhanced Raman scattering (SERS), extraordinary optical transmission W ith their ability to concentrate light at a deepsubwavelength scale by excitation of surface plasmons, metallic nanostructures play a major role in current nanoscience. 1 In particular, optical tweezers, 2 antennas, 3,4 lasers, 5 photodetectors, 6 or biochemical sensing platforms 7,8 have been scaled down to the nanometer range. However, their performance are limited by the short lifetimes of surface plasmon resonances. 9 Recently, it has been shown that the use of plasmonic modes with long radiative life times (subradiant modes) can drastically enhance the performance of nanophotonic devices. 10−12 Their spectral response carry an asymmetric line shape with sharp spectral features, characteristic of Fano resonances. 13−22 The coupling of subradiant modes to radiation, their radiance, is directly controlled by the geometrical configuration of the nanostructures, 19 and also governs their optical response and the location and amplitude of light confinement. 20 Despite the fact that the use of subradiant modes for nanophotonic applications critically depends on the coupling strength, the choice of an optimal regime has so far never been addressed.In this work, we use a universal model for interacting radiative and localized channels to investigate the radiance of a plasmonic mode. We demonstrate that the radiance of a plasmonic mode can be classified into three different regimes. In the weak coupling regime, the radiance of the mode is small and extremely sensitive to perturbations in the coupling. We introduce a novel sensing concept, radiance sensing, which is based on the sensitivity of the radiance to the environment, rather than conventional plasmon sensing relying on the wavelength shift of plasmon modes. 8 In the intermediate regime, the radiative damping is equal to the int...

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Plasmon nano-optical tweezers

Cited by 1,308 publications

References 75 publications

Nanowire-supported plasmonic waveguide for remote excitation of surface-enhanced Raman scattering

Nanowire-supported plasmonic waveguide for remote excitation of surface-enhanced Raman scattering

Nonlinear laser lithography for indefinitely large-area nanostructuring with femtosecond pulses

Plasmonic Radiance: Probing Structure at the Ångström Scale with Visible Light

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