Nanophotonics theory: Enviaments recents

Ara es mostren els items 13-24 de 27

    • Nonlinear Plasmonic Sensing with Nanographene 

      Yu, Renwen; Cox, Joel D.; García de Abajo, Francisco Javier (APS, 2016-09-16)
      Article
      Accés obert
      Plasmons provide excellent sensitivity to detect analyte molecules through their strong interaction with the dielectric environment. Plasmonic sensors based on noble metals are, however, limited by the spectral broadening ...

    • Plasmons in doped finite carbon nanotubes and their interactions with fast electrons and quantum emitters 

      Vega, Sandra de; Cox, Joel D.; García de Abajo, Francisco Javier (APS, 2016-08-31)
      Article
      Accés obert
      We study the potential of highly doped finite carbon nanotubes to serve as plasmonic elements that mediate the interaction between quantum emitters. Similar to graphene, nanotubes support intense plasmons that can be ...

    • Smith-Purcell radiation emission in aperiodic arrays 

      Saavedra, J. R. M.; Castells-Graells, D.; García de Abajo, Francisco Javier (APS, 2016-07-13)
      Article
      Accés obert
      We study the Smith-Purcell light emission produced by electrons moving parallel to linear aperiodic particle arrays. This constitutes a generalization of this type of phenomenon from periodic to aperiodic structures. As ...

    • Propagation and localization of quantum dot emission along a gap-plasmonic transmission line 

      Castro-Lopez, M.; Manjavacas, A.; García de Abajo, Francisco Javier; Hulst, Niek F. van (OSA, 2015-11-02)
      Article
      Accés obert
      Plasmonic transmission lines have great potential to serve as direct interconnects between nanoscale light spots. The guiding of gap plasmons in the slot between adjacent nanowire pairs provides improved propagation of ...

    • Ultraefficient Coupling of a Quantum Emitter to the Tunable Guided Plasmons of a Carbon Nanotube 

      Martín-Moreno, Luis; García de Abajo, Francisco Javier; García-Vidal, Francisco J. (APS, 2015-10-23)
      Article
      Accés obert
      We show that a single quantum emitter can efficiently couple to the tunable plasmons of a highly doped single-wall carbon nanotube (SWCNT). Plasmons in these quasi-one-dimensional carbon structures exhibit deep subwavelength ...

    • Phonon excitation by electron beams in nanographenes 

      Saavedra, J. R. M.; García de Abajo, Francisco Javier (APS, 2015-09-30)
      Article
      Accés obert
      Electron beams have the ability of exciting vibrational modes (phonons) in molecules and nanoclusters, which can be currently probed with atomic spatial resolution through electron energy-loss spectroscopy (EELS). This ...

    • Pronounced Linewidth Narrowing of an Aluminum Nanoparticle Plasmon Resonance by Interaction with an Aluminum Metallic Film 

      Sobhani, Ali; Manjavacas, Alejandro; Cao, Yang; McClain, Michael J.; García de Abajo, Francisco Javier; Nordlander, Peter; Halas, Naomi J. (ACS, 2015-09-18)
      Article
      Accés restringit per política de l'editorial
      Aluminum nanocrystals and fabricated nanostructures are emerging as highly promising building blocks for plasmonics in the visible region of the spectrum. Even at the individual nanocrystal level, however, the localized ...

    • Plasmon wave function of graphene nanoribbons 

      Silveiro, I.; Plaza Ortega, J. M.; García de Abajo, Francisco Javier (IOP, 2015-08-06)
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      Accés obert
      We find the low-frequency optical response of highly doped individual and arrayed graphene nanoribbons to be accurately described in terms of plasmon wave functions (PWFs). More precisely, we focus on the lowest-order ...

    • Mid-Infrared Plasmonic Biosensing with Graphene 

      Rodrigo, Daniel; Limaj, Odeta; Janner, Davide; Etezadi, Dordaneh; García de Abajo, Francisco Javier; Pruneri, Valerio; Altug, Hatice (Science, 2015-07-10)
      Article
      Accés obert
      Infrared spectroscopy is the technique of choice for chemical identification of biomolecules through their vibrational fingerprints. However, infrared light interacts poorly with nanometric-size molecules. We exploit the ...

    • Interference of surface plasmons and Smith-Purcell emission probed by angle-resolved cathodoluminescence spectroscopy 

      Yamamoto, Naoki; García de Abajo, Francisco Javier; Myroshnychenko, Viktor (APS, 2015-03-30)
      Article
      Accés obert
      We investigate the interplay between geometrical lattice resonances and surface plasmons mediating the emission of Smith-Purcell visible light via angle-resolved cathodoluminescence spectroscopy. We observe strong modulations ...

    • Resonant Visible Light Modulation with Graphene 

      Yu, Renwen; Pruneri, Valerio; García de Abajo, Francisco Javier (ACS, 2015-03-13)
      Article
      Accés obert
      Fast modulation and switching of light at visible and near-infrared (vis–NIR) frequencies are of utmost importance for optical signal processing and sensing technologies. No fundamental limit appears to prevent us from ...

    • Electrical control of optical emitter relaxation pathways enabled by graphene 

      Tielrooij, K. J.; Orona, L.; Ferrier, A.; Badioli, M.; Navickaite, G.; Coop, S.; Nanot, S.; Kalinic, B.; Cesca, T.; Gaudreau, L.; Ma, Q.; Centeno, A.; Pesquera, A.; Zurutuza, A.; Riedmatten, H. de; Goldner, P.; García de Abajo, Francisco Javier; Jarillo-Herrero, P.; Koppens, Frank H. L. (Nature Publishing Group, 2015-01-19)
      Article
      Accés obert
      Controlling the energy flow processes and the associated energy relaxation rates of a light emitter is of fundamental interest and has many applications in the fields of quantum optics, photovoltaics, photodetection, ...