Measurement and Reduction of Damping in Plasmonic Nanowires

Kusar, P.; Gruber, Christian; Hohenau, Andreas; Krenn, Joachim R.

doi:10.1021/nl203452d

Cited by 87 publications

(122 citation statements)

References 25 publications

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“…The experimental observation of these convection velocities are in fair agreement with theoretical predictions; however, discrepancies exist due, in part, to differences in the optical properties of the actual and simulated ITO films and the polycrystalline nature of the structures. Specifically, it is well-established that ITO films and Au nanostructures prepared via e-beam lithography and evaporation are polycrystalline in nature 34 . Compared with the homogeneous structures simulated in this study, the polycrystalline structure of ITO and Au that could be an additional source of deviation from the model in practice.…”

Section: Discussionmentioning

confidence: 99%

Understanding and controlling plasmon-induced convection

et al. 2014

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The heat generation and fluid convection induced by plasmonic nanostructures is attractive for optofluidic applications. However, previously published theoretical studies predict only nanometre per second fluid velocities that are inadequate for microscale mass transport. Here we show both theoretically and experimentally that an array of plasmonic nanoantennas coupled to an optically absorptive indium-tin-oxide (ITO) substrate can generate 4micro-metre per second fluid convection. Crucially, the ITO distributes thermal energy created by the nanoantennas generating an order of magnitude increase in convection velocities compared with nanoantennas on a SiO 2 base layer. In addition, the plasmonic array alters absorption in the ITO, causing a deviation from Beer-Lambert absorption that results in an optimum ITO thickness for a given system. This work elucidates the role of convection in plasmonic optical trapping and particle assembly, and opens up new avenues for controlling fluid and mass transport on the micro-and nanoscale.

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Section: Discussionmentioning

confidence: 99%

Understanding and controlling plasmon-induced convection

et al. 2014

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“…From the fringes in the spectra, the group velocity of plasmons can be deduced. The plasmon group velocity is around half that of light in vacuum and decreases with decreasing excitation wavelength [45,46] . Rewitz et al measured the plasmon group velocity for silver nanowires of different diameters using a spectral interferometry technique [47] .…”

Section: Group Velocity and Propagation Lengthmentioning

confidence: 99%

Nanowire-based plasmonic waveguides and devices for integrated nanophotonic circuits

Wei

2012

Nanophotonics

120

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The fast development of plasmonics have greatly advanced our understanding to the abundant phenomena related to surface plamon polaritons (SPPs) and improved our ability to manipulate light at the nanometer scale. With tightly confi ned local fi eld, SPPs can be transmitted in waveguides of subwavelength dimensions. Nanophotonic circuits built with plasmonic elements can be scaled down to dimensions compatible with semiconductor-based nanoelectronic circuits, which provides a potential solution for the next-generation information technology. Different structures have been explored as plasmonic waveguides for potential integration applications. This review is focused on metallic nanowire waveguides and functional components in nanowire networks. We reviewed recent progress in research about plasmon generation, emission direction and polarization, group velocity, loss and propagation length, and the near-fi eld distribution revealed by quantum dot fl uorescence imaging. Electrical generation and detection of SPPs moves towards the building of plasmonic circuits, where bulky external light sources and detectors may be omitted. The coupling between metal nanowires and emitters is important for tailoring light-matter interactions, and for various potential applications. In multi-nanowire structures, plasmon signal control and processing are introduced. The working principles of these nanowire-based devices, which are based on the control to the near fi eld distributions, will become the design rule for nanophotonic circuits with higher complexity for optical signal processing. The recent developments in hybrid photonic-plasmonic waveguides and devices are promising for making devices with unprecedented performance.

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“…In addition to chemical synthesis, nanowires fabricated by electron beam lithography showed the capability for use as plasmonic waveguides, with a nearly 10-mm propagation distance in an Ag-branched nanowire under 780-nm laser excitation. 81 Despite the lesser capability of these plasmonic waveguides compared to those produced by chemical synthesis, nanowires fabricated by electron beam lithography have much more extensive application prospects due to their ability of precise modulation.…”

Section: Synthesis and Fabrication Of Metal Nanowiresmentioning

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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Measurement and Reduction of Damping in Plasmonic Nanowires

Cited by 87 publications

References 25 publications

Understanding and controlling plasmon-induced convection

Understanding and controlling plasmon-induced convection

Nanowire-based plasmonic waveguides and devices for integrated nanophotonic circuits

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

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