Now showing items 1-15 of 15

  • Double-layer graphene for enhanced tunable infrared plasmonics 

    Rodrigo, Daniel; Tittl, Andreas; Lima, Odeta; García de Abajo, Francisco Javier; Pruneri, Valerio; Altug, Hatice (Nature, 2017-06-02)
    Article
    Open Access
    Graphene is emerging as a promising material for photonic applications owing to its unique optoelectronic properties. Graphene supports tunable, long-lived and extremely confined plasmons that have great potential for ...
  • 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
    Open Access
    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, ...
  • 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
    Open Access
    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 ...
  • 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
    Open Access
    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 ...
  • Nonlinear Plasmonic Sensing with Nanographene 

    Yu, Renwen; Cox, Joel D.; García de Abajo, Francisco Javier (APS, 2016-09-16)
    Article
    Open Access
    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 ...
  • Optimization of Nanoparticle-Based SERS Substrates through Large-Scale Realistic Simulations 

    Solís, Diego M.; Taboada, José M,; Obelleiro, Fernando; Liz-Marzán, Luis M.; García de Abajo, Francisco Javier (ACS, 2016-12-20)
    Article
    Open Access
    Surface-enhanced Raman scattering (SERS) has become a widely used spectroscopic technique for chemical identification, providing unbeaten sensitivity down to the singlemolecule level. The amplification of the optical ...
  • Phonon excitation by electron beams in nanographenes 

    Saavedra, J. R. M.; García de Abajo, Francisco Javier (APS, 2015-09-30)
    Article
    Open Access
    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 ...
  • Plasmonics in atomically thin materials 

    García de Abajo, Francisco Javier; Manjavacas, Alejandro (Royal Society of Chemistry, 2015-03-15)
    Article
    Open Access
    The observation and electrical manipulation of infrared surface plasmons in graphene have triggered a search for similar photonic capabilities in other atomically thin materials that enable electrical modulation of light ...
  • Plasmon wave function of graphene nanoribbons 

    Silveiro, I.; Plaza Ortega, J. M.; García de Abajo, Francisco Javier (IOP, 2015-08-06)
    Article
    Open Access
    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 ...
  • 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
    Restricted access - publisher's policy
    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 ...
  • 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
    Open Access
    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 ...
  • Quantum nonlocal effects in individual and interacting graphene nanoribbons 

    Silveiro, Iván; Plaza Ortega, Juan Manuel; García de Abajo, Francisco Javier (Nature Publishing Group, 2015-01-30)
    Article
    Open Access
    We show that highly doped graphene ribbons can support surface plasmons at near-infrared frequencies when their width is in the nanometer range, leading to important nonlocal and finite quantum-size corrections, such as ...
  • Resonant Visible Light Modulation with Graphene 

    Yu, Renwen; Pruneri, Valerio; García de Abajo, Francisco Javier (ACS, 2015-03-13)
    Article
    Open Access
    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 ...
  • Second-order quantum nonlinear optical processes in single graphene nanostructures and arrays 

    Manzoni, M. T.; Silveiro, I.; García de Abajo, Francisco Javier; Chang, Darrick E. (IOP, 2015-08-17)
    Article
    Open Access
    Intense efforts have been made in recent years to realize nonlinear optical interactions at the single-photon level. Much of this work has focused on achieving strong third-order nonlinearities, such as by using single ...
  • 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
    Open Access
    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 ...