Enviaments recents

  • High Quality Factor Mechanical Resonators Based on WSe2 Monolayers 

    Morell, Nicolas; Reserbat-Plantey, Antoine; Tsioutsios, Ioannis; Schädler, Kevin G.; Dubin, François; Koppens, Frank H. L.; Bachtold, Adrian (ACS, 2016-07-26)
    Article
    Accés obert
    Suspended monolayer transition metal dichalcogenides (TMD) are membranes that combine ultralow mass and exceptional optical properties, making them intriguing materials for opto-mechanical applications. However, the low ...
  • Direct observation of ultraslow hyperbolic polariton propagation with negative phase velocity 

    Yoxall, Edward; Schnell, Martin; Nikitin, Alexey Y.; Txoperena, Oihana; Woessner, Achim; Lundeberg, Mark B.; Casanova, Félix; Hueso, Luis E.; Koppens, Frank H. L.; Hillenbrand, Rainer (Nature Publishing Group, 2015-09-14)
    Accés restringit per política de l'editorial
    Polaritons with hyperbolic dispersion are key to many emerging photonic technologies, including subdiffraction imaging, sensing and spontaneous emission engineering1, 2, 3, 4, 5, 6, 7, 8. Fundamental to their effective ...
  • Thermodynamic picture of ultrafast charge transport in graphene 

    Mics, Zoltan; Tielrooij, Klaas-Jan; Parvez, Khaled; Jensen, Søren A.; Ivanov, Ivan; Feng, Xinliang; Müllen, Klaus; Bonn, Mischa; Turchinovich, Dmitry (Nature Publishing Group, 2015-07-16)
    Accés obert
    The outstanding charge transport properties of graphene enable numerous electronic applications of this remarkable material, many of which are expected to operate at ultrahigh speeds. In the regime of ultrafast, sub-picosecond ...
  • 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, ...
  • Ultrafast electronic readout of diamond nitrogen–vacancy centres coupled to graphene 

    Brenneis, Andreas; Gaudreau, Louis; Seifert, Max; Karl, Helmut; Brandt, Martin S.; Huebl, Hans; Garrido, Jose A.; Koppens, Frank H. L.; Holleitner, Alexander W. (Nature Publishing Group, 2014-12-01)
    Article
    Accés obert
    Non-radiative transfer processes are often regarded as loss channels for an optical emitter1 because they are inherently difficult to access experimentally. Recently, it has been shown that emitters, such as fluorophores ...
  • Highly confined low-loss plasmons in graphene–boron nitride heterostructures 

    Woessner, Achim; Lundeberg, Mark B.; Gao, Yuanda; Principi, Alessandro; Alonso-González, Pablo; Carrega, Matteo; Watanabe, Kenji; Taniguchi, Takashi; Vignale, Giovanni; Polini, Marco; Hone, James; Hillenbrand, Rainer; Koppens, Frank H.L. (Nature Publishing Group, 2014-12-22)
    Article
    Accés obert
    Graphene plasmons were predicted to possess simultaneous ultrastrong field confinement and very low damping, enabling new classes of devices for deep-subwavelength metamaterials, single-photon nonlinearities, extraordinarily ...
  • Hot-carrier photocurrent effects at graphene–metal interfaces 

    Tielrooij, K. J.; Massicotte, M.; Piatkowski, L.; Woessner, A.; Ma, Q.; Jarillo-Herrero, P.; Hulst, N. F. van; Koppens, F. H. L. (IOP, 2015-03-02)
    Article
    Accés obert
    Photoexcitation of graphene leads to an interesting sequence of phenomena, some of which can be exploited in optoelectronic devices based on graphene. In particular, the efficient and ultrafast generation of an electron ...
  • Generation of photovoltage in graphene on a femtosecond timescale through efficient carrier heating 

    Tielrooij, K. J.; Piatkowski, L.; Massicotte, M.; Woessner, A.; Ma, Q.; Lee, Y.; Myhro, K. S.; Lau, C. N.; Jarillo-Herrero, P.; Hulst, N. F. van; Koppens, F. H. L. (Nature, 2015-04-13)
    Article
    Accés obert
    Graphene is a promising material for ultrafast and broadband photodetection. Earlier studies have addressed the general operation of graphene-based photothermoelectric devices and the switching speed, which is limited by ...
  • Ultrafast electronic readout of diamond nitrogen-vacancy centres coupled to graphene 

    Brenneis, Andreas; Gaudreau, Louis; Seifert, Max; Karl, Helmut; Brandt, Martin S.; Huebl, Hans; Garrido, Jose A; Koppens, Frank H. L.; Holleitner, Alexander W. (Nature Publishin group, 2014-12-01)
    Article
    Accés obert
    Non-radiative transfer processes are often regarded as loss channels for an optical emitter1 because they are inherently difficult to access experimentally. Recently, it has been shown that emitters, such as fluorophores ...
  • Competing Ultrafast Energy Relaxation Pathways in Photoexcited Graphene 

    Jensen, S. A.; Mics, Z.; Ivanov, I.; Varol, H. S.; Turchinovich, D.; Bonn, M.; Tielrooij, K. J. (ACS Publications, 2014-09-23)
    Article
    Accés obert

Mostra'n més