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    • Plusieurs versions

    Sculpting nanometer-sized light landscape with plasmonic nanocolumns

    Marty, Renaud, Arbouet, Arnaud, Girard, Christian, Margueritat, Jérémie, Gonzalo, José, Afonso, Carmen N
    The Journal of chemical physics, 14 December 2009, Vol.131(22), pp.224707 [Revue évaluée par les pairs]

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    Mise en évidence de relations spatiales entre la circulation atmosphérique générale et les précipitations mesurées dans le bassin alpin du Rhône, à l'aide de la méthode des analogues

    Horton, Pascal, Jaboyedoff, Michel, Metzger, Richard, Obled, Charles, Marty, Renaud
    In: Les dangers naturels en Suisse: pratiques et développements : comptes rendus de la deuxième Journée de rencontre sur les dangers naturels (Université de Lausanne, 18 février 2011) / Pierrick Nicolet, Marc-Henri Derron & Michel Jaboyedoff (eds.). - Lausanne : Société vaudoise des sciences naturelles, 2013. - P. 11-21 : ill.
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    Titre: Mise en évidence de relations spatiales entre la circulation atmosphérique générale et les précipitations mesurées dans le bassin alpin du Rhône, à l'aide de la méthode des analogues / Pascal Horton, Michel Jaboyedoff, Richard Metzger, Charles Obled & Renaud Marty
    Auteur: Horton, Pascal; Jaboyedoff, Michel; Metzger, Richard; Obled, Charles; Marty, Renaud
    Sujet RERO: Précipitations (météorologie) - Circulation atmosphérique - Statistiques - Rhône (vallée) - Valais (Suisse)
    Sujet RERO - forme: [Articles de périodiques]
    Publication en relation: In: Les dangers naturels en Suisse: pratiques et développements : comptes rendus de la deuxième Journée de rencontre sur les dangers naturels (Université de Lausanne, 18 février 2011) / Pierrick Nicolet, Marc-Henri Derron & Michel Jaboyedoff (eds.). - Lausanne : Société vaudoise des sciences naturelles, 2013. - P. 11-21 : ill.
    Document hôte: Les œdangers naturels en Suisse: pratiques et développements : comptes rendus de la deuxième Journée de rencontre sur les dangers naturels (Université de Lausanne, 18 février 2011)
    Classification: vs-bvs-sys 01.02.05
    No RERO: R007330484
    Permalien:
    http://data.rero.ch/01-R007330484/html?view=VS_V1

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    Interaction of an ultrashort optical pulse with a metallic nanotip: A Green dyadic approach

    Arbouet, Arnaud, Houdellier, Florent, Marty, Renaud, Girard, Christian
    Journal of applied physics, 2012, Vol.112(5), p.053103 [Revue évaluée par les pairs]
    Hyper Article en Ligne (CCSd), Hyper Article en Ligne Open Access (CCSd)
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    Titre: Interaction of an ultrashort optical pulse with a metallic nanotip: A Green dyadic approach
    Auteur: Arbouet, Arnaud; Houdellier, Florent; Marty, Renaud; Girard, Christian
    Sujet: Physics ; Physics ; Optics ; Physics ; High Energy Physics - Experiment ; Physics ; Quantum Physics ; Physics ; Physics ; Accelerator Physics ; Engineering Sciences ; Electromagnetism ; Engineering Sciences ; Materials ; Engineering Sciences ; Optics ; Photonic ; Engineering Sciences ; Signal and Image Processing ; Engineering
    Description: We consider the interaction of an ultrashort optical pulse with a metallic nanotip. In the framework of the Green dyadic method, we calculate the time-dependent electric field in the vicinity of the metallic nano-object. The electric field enhancement at the tip apex, its temporal evolution, and its dependence upon the polarization of the incident electric field are addressed. By comparing the case of tungsten and gold nanotips, we show that significantly larger electric field enhancements can be obtained with the latter and point out different temporal responses. Our description provides the time-dependent spatial distribution of the electric field around metallic nano-objects of arbitrary geometries which is the first step to describe light-matter interaction in recently developed laser-driven femtosecond electron nanosources or recent results in ultrafast nanoplasmonics.
    Fait partie de: Journal of applied physics, 2012, Vol.112(5), p.053103
    Identifiant: 0021-8979 (ISSN); 1089-7550 (E-ISSN); 10.1063/1.4747840 (DOI)

    • Plusieurs versions

    From patterned optical near-fields to high symmetry acoustic vibrations in gold crystalline platelets

    Fedou, J, Marty, Renaud, Viarbitskaya, Sviatlana, Sharma, Jadab, Paillard, Vincent, Dujardin, Erik, Arbouet, Arnaud
    Physical chemistry chemical physics : PCCP, 2013, Vol.15(12), pp.4205-4213 [Revue évaluée par les pairs]

    • Plusieurs versions

    A general framework for waves in random media with long-range correlations

    Marty, Renaud, Solna, Knut
    The Annals of applied probability, 2011, Vol.21(1), pp.115-139 [Revue évaluée par les pairs]

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    Local time and Tanaka formula for a Volterra-type multifractional Gaussian process

    Boufoussi, Brahim, Dozzi, Marco, Marty, Renaud
    Bernoulli : official journal of the Bernoulli Society for Mathematical Statistics and Probability, 2010 [Revue évaluée par les pairs]
    Hyper Article en Ligne (CCSd), Hyper Article en Ligne Open Access (CCSd)
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    Titre: Local time and Tanaka formula for a Volterra-type multifractional Gaussian process
    Auteur: Boufoussi, Brahim; Dozzi, Marco; Marty, Renaud
    Sujet: Mathematics ; Probability ; Statistics ; Mathematics
    Description: The stochastic calculus for Gaussian processes is applied to obtain a Tanaka formula for a Volterra-type multifractional Gaussian process. The existence and the regularity properties of the local time of this process is obtained by means of Berman's Fourier analytic approach.
    Fait partie de: Bernoulli : official journal of the Bernoulli Society for Mathematical Statistics and Probability, 2010
    Identifiant: 1350-7265 (ISSN)

    • Plusieurs versions

    Plasphonics : local hybridization of plasmons and phonons

    Marty, Renaud, Mlayah, Adnen, Arbouet, Arnaud, Girard, Christian, Tripathy, Sudhiranjan
    Optics express, 2013, Vol.21(4), p.4551 [Revue évaluée par les pairs]

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    Plasmonic properties of gold ring-disk nano-resonators: fine shape details matter

    Large, Nicolas, Aizpurua, Javier, Lin, Vivian Kaixin, Teo, Siew Lang, Marty, Renaud, Tripathy, Sudhiranjan, Mlayah, Adnen
    Optics express, 14 March 2011, Vol.19(6), pp.5587-95 [Revue évaluée par les pairs]
    MEDLINE/PubMed (U.S. National Library of Medicine)
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    Titre: Plasmonic properties of gold ring-disk nano-resonators: fine shape details matter
    Auteur: Large, Nicolas; Aizpurua, Javier; Lin, Vivian Kaixin; Teo, Siew Lang; Marty, Renaud; Tripathy, Sudhiranjan; Mlayah, Adnen
    Sujet: Physics;
    Description: Using numerical simulations, we demonstrate that fine shape details of gold nanoring-disks are responsible for significant modifications of their localized surface plasmon properties. The numerical results are supported by optical transmission measurements and by atomic force microscopy. In particular, we found that, depending on the ring wall sharpness, the spectral shift of the ring-like localized surface plasmon resonance can be as large as few hundred nanometers. These results shed the light on the strong sensitivity of the surface plasmon properties to very small deviations of the ring and disk shapes from the ideally flat surfaces and sharp edges. This effect is particularly important for tailoring the surface plasmon properties of metallic nanostructures presenting edges and wedges for applications in bio- and chemical sensing and for enhancement of light scattering.
    Fait partie de: Optics express, 14 March 2011, Vol.19(6), pp.5587-95
    Identifiant: 1094-4087 (E-ISSN); 21445198 Version (PMID); 10.1364/OE.19.005587 (DOI)

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    Plasmonic Nanoparticle Networks for Light and Heat Concentration

    Sanchot, Audrey, Baffou, Guillaume, Marty, Renaud, Arbouet, Arnaud, Quidant, Romain, Girard, Christian, Dujardin, Erik
    Cornell University
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    Titre: Plasmonic Nanoparticle Networks for Light and Heat Concentration
    Auteur: Sanchot, Audrey; Baffou, Guillaume; Marty, Renaud; Arbouet, Arnaud; Quidant, Romain; Girard, Christian; Dujardin, Erik
    Sujet: Physics - Optics
    Description: Self-assembled Plasmonic Nanoparticle Networks (PNN) composed of chains of 12-nm diameter crystalline gold nanoparticles exhibit a longitudinally coupled plasmon mode cen- tered at 700 nm. We have exploited this longitudinal absorption band to efficiently confine light fields and concentrate heat sources in the close vicinity of these plasmonic chain net- works. The mapping of the two phenomena on the same superstructures was performed by combining two-photon luminescence (TPL) and fluorescence polarization anisotropy (FPA) imaging techniques. Besides the light and heat concentration, we show experimentally that the planar spatial distribution of optical field intensity can be simply modulated by controlling the linear polarization of the incident optical excitation. On the contrary, the heat production, which is obtained here by exciting the structures within the optically transparent window of biological tissues, is evenly spread over the entire PNN. This contrasts with the usual case of localized heating in continuous nanowires, thus opening opportunities for these networks in light-induced hyperthermia applications. Furthermore, we propose a unified theoretical framework to account for both the non-linear optical and thermal near-fields around PNN. The associated numerical simulations, based on a Green s function formalism, are in excellent agreement with the experimental images. This formalism therefore provides a versatile tool for the accurate engineering of optical and thermodynamical properties of complex plasmonic colloidal architectures.
    Identifiant: 1203.0574 (ARXIV ID)

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    Fast optical modulation of the fluorescence from a single NV centre

    Geiselmann, Michael, Marty, Renaud, De Abajo, F. Javier García, Quidant, Romain
    Nature Physics 9, 785-789 (2013) [Revue évaluée par les pairs]
    Cornell University
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    Titre: Fast optical modulation of the fluorescence from a single NV centre
    Auteur: Geiselmann, Michael; Marty, Renaud; De Abajo, F. Javier García; Quidant, Romain
    Sujet: Physics - Optics
    Description: The much sought after optical transistor --the photonic counterpart of the electronic transistor-- is poised to become a central ingredient in the development of optical signal processing. The motivation for using photons rather than electrons not only comes from their faster dynamics but also from their lower crosstalk and minor environmental decoherence, which enable a high degree of integration and the realization of quantum operations. A single-molecule transistor has been recently demonstrated at cryogenic temperatures. Here, we demonstrate that a single NV centre at room temperature can operate as an optical switch under non-resonant CW illumination. We show optical modulation of more than 80% and time response faster than 100 ns in the green-laser-driven fluorescence signal, which we control through an independent near-infrared (NIR) gating laser. Our study indicates that the NIR laser triggers a fast-decay channel of the NV mediated by promotion of the excited state to a dark band. This simple concept opens a new approach towards the implementation of nanoscale optical switching devices.
    Fait partie de: Nature Physics 9, 785-789 (2013)
    Identifiant: 1403.7002 (ARXIV ID)