Remote-excitation surface-enhanced Raman scattering with counter-propagating plasmons: silver nanowire-nanoparticle system

Dasgupta, Arindam; Singh, Danveer; Tandon, Shreyash; Tripathi, Ravi P. N.; Kumar, G. V. Pavan

doi:10.1117/1.jnp.8.083899

Cited by 14 publications

(15 citation statements)

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“…86 A similar study on dual-path excitation of remote SERS in an Ag nanoparticle-nanowire system has been reported by the same group. 88 The enhanced Raman intensity from the dual-path excitation in these studies greatly improves the application of remote SERS.…”

Section: Metal Nanowire Dimer Systemmentioning

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: Metal Nanowire Dimer Systemmentioning

confidence: 99%

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

et al. 2014

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“…Firstly, how does the spatial location of the quantum emitter with respect to individual anisotropic plasmonic nanostructure affect its radiative and non-radiative processes? This question is of direct relevance in designing optical antennas to control atomic and molecular emission [7,8,9,10,11,12,13,14]. With the emergence of nanofabrication methods, accurate placement of single quantum emitters have been achieved [15,16,17], which may open new avenues in quantum optics and quantum information processing [18,19].…”

Section: Introductionmentioning

confidence: 99%

Quantum emitter coupled to plasmonic nanotriangle: Spatially dependent emission and thermal mapping

Vasista

Kumar

2016

Optics Communications

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Herein we report on our studies of radiative and non-radiative interaction between an individual quantum emitter and an anisotropic plasmonic nanostructure: a gold nanotriangle. Our theoretical and three-dimensional electromagnetic simulation studies highlight an interesting connection between : dipoleorientation of the quantum emitter, anisotropy of the plasmonic nanostructure and, radiative and non-radiative energy transfer processes between the emitter and the plasmonic geometry. For the out of plane orientation of quantum emitter, the total decay rate and non-radiative decay rate was found to be maximum, showing radiation extraction efficiency of 0.678. Also the radiative decay rate was greater for the same orientation, and showed a pronounced spatial dependence with respect to the nanotriangle. Our study has direct implication on two aspects: designing nanoparticle optical antennas to control emission from individual atoms and molecules and geometrical control of quenching of emission into plasmonic decay channels. c 2016 This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/

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“…In the past, nanowire-nanoparticle junctions have been utilized to understand the input polarization dependence and SERS enhancement, [22][23][24][25][26] to enhance performance of optoelectronic devices, [27] directional elastic scattering and fluorescence, [28] remote-excitation SERS, [29,30] to understand coupling, [31] etc. In all these experiments, either the molecular signature is not exactly from the junction alone or the momentum resolved imaging is not carried out.…”

mentioning

confidence: 99%

Momentum‐Resolved Surface Enhanced Raman Scattering from a Nanowire–Nanoparticle Junction Cavity

Vasista

Chaubey

Gosztola

et al. 2019

Advanced Optical Materials

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Herein experimental evidence of directional surface enhanced Raman scattering from molecules situated inside a single nanowire–nanoparticle junction cavity is reported. The emission is confined to a narrow range of wavevectors perpendicular to the axis of the cavity. In addition to this, the molecules excite multiple guided modes of the nanowire which are imaged using leakage radiation Fourier microscopy. The emission wavevectors are further characterized as a function of output polarization. The excited guided modes of the wire show interesting polarization signatures. All the results are corroborated using finite element method based numerical simulations. Essentially, an important connection between gap‐cavity enhanced Raman scattering and its directionality of emission is provided. The results may be of relevance in understanding the cavity electrodynamics at the nanoscale and molecular coupling to extremely small gaps between a 1D and a 0D plasmonic nanostructure.

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Remote-excitation surface-enhanced Raman scattering with counter-propagating plasmons: silver nanowire-nanoparticle system

Cited by 14 publications

References 0 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

Quantum emitter coupled to plasmonic nanotriangle: Spatially dependent emission and thermal mapping

Momentum‐Resolved Surface Enhanced Raman Scattering from a Nanowire–Nanoparticle Junction Cavity

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