Browsing by Subject "Plasmons (Física)"

Now showing items 21-36 of 36

    • Plasmonic Nanocavity Coupling 

      Hugall, James T.; Singh, Anshuman; Hulst, Niek F. van (ACS, 2018-01-08)
      Article
      Open Access
      The large losses of plasmonic nanocavities, orders of magnitude beyond those of photonic dielectric cavities, places them, perhaps surprisingly, as exceptional enhancers of single emitter light‐matter interactions. The ...

    • 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 ...

    • Plasmonics of supported nanoparticles reveals adhesion at the nanoscale: implications for metals on dielectrics 

      Lazzari, R Rossi M A Saeta; Castilla Gómez, Manuel Sebastián (American Chemical Society, 2020-12-24)
      Article
      Open Access
      The morphology and adhesion energy of nanosized metal particles supported on dielectrics are a puzzling issue since, due to the increasing contribution of surfaces and interfaces in their energetics, their equilibrium shape ...

    • 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
      Open Access
      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 ...

    • 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 surface-response of metals revealed by acoustic graphene plasmons 

      Gonçalves, P. A. D.; Christensen, Thomas; Peres, Nuno M. R; Jauho, Antti-Pekka; Epstein, Itai; Koppens, Frank H. L.; Soljačić, Marin; Mortensen, N. Asger (Nature, 2021-06-01)
      Article
      Open Access
      A quantitative understanding of the electromagnetic response of materials is essential for the precise engineering of maximal, versatile, and controllable light–matter interactions. Material surfaces, in particular, are ...

    • Resonances in graphene plasmons 

      Alcaraz Iranzo, David (Universitat Politècnica de Catalunya, 2014-09-09)
      Master thesis
      Open Access
      [ANGLÈS] Graphene is used as a novel, versatile plasmonic material. The most common way to implement resonant light-plasmon coupling is to etch graphene into periodic nanostructures, which is invasive. Here, we study a ...

    • Scalable and tunable periodic graphene nanohole arrays for mid-infrared plasmonics 

      Gopalan, Kavitha K.; Paulillo, Bruno; Mackenzie, David M. A.; Rodrigo, Daniel; Bareza, Nestor, Jr.; Whelan, Patrick R.; Shivayogimath, Abhay; Pruneri, Valerio (2018-09-12)
      Article
      Open Access
      Despite its great potential for a wide variety of devices, especially mid-infrared biosensors and photodetectors, graphene plasmonics is still confined to academic research. A major reason is the fact that, so far, ...

    • Self-biased reconfigurable graphene stacks for terahertz plasmonics 

      Gomez Diaz, J. S.; Moldovan, C; Capdevila Cascante, Santiago; Romeu Robert, Jordi; Bernard, L. S.; Magrez, A; Ionescu, A. M.; Perruisseau Carrier, Julien (2015-03-01)
      Article
      Open Access
      The gate-controllable complex conductivity of graphene offers unprecedented opportunities for reconfigurable plasmonics at terahertz and mid-infrared frequencies. However, the requirement of a gating electrode close to ...

    • Simulations of radiative shocks and jet formation in laboratory plasmas 

      Velarde, Pedro; González, Matthias; Oliva, Eduardo; Kasperczuk, Andrzej; Pisarczyk, Tadeusz; Ullschmied, Jiri; Stehlé, Chantal; Rus, Bedrich; García Senz, Domingo; Bravo Guil, Eduardo; Relaño, Antonio (IOP Publishing, 2007)
      Conference report
      Restricted access - publisher's policy
      We present the simulations of two relevant hydrodynamical problems related to astrophysical phenomena performed by three different codes. The numerical results from these codes will be compared in order to test both the ...

    • Strong coupling of organic molecules to a plasmonic nano-antenna cavity 

      Gyssels, Lander (Universitat Politècnica de Catalunya, 2022-07-20)
      Master thesis
      Open Access
      The optical properties of molecules can be changed by the presence of a cavity. If the cavity is resonant with a certain transition of the molecules, the molecules couple with the cavity. The coupling is characterized by ...

    • Strong-field plasmonic photoemission in the mid-IR at <1 GW/cm2 intensity 

      Teichmann, S. M.; Rácz, P.; Ciappina, M. F.; Pérez-Hernández, J. A.; Thai, A.; Fekete, J.; Elezzabi, A. Y.; Veisz, L.; Biegert, Jens; Dombi, P. (Nature Publishing group, 2015-01-12)
      Article
      Open Access
      We investigated nonlinear photoemission from plasmonic films with femtosecond, mid-infrared pulses at 3.1 mm wavelength. Transition between regimes of multi-photon-induced and tunneling emission is demonstrated at an ...

    • The inverse-square interaction phase diagram: unitarity in the bosonic ground state 

      Astrakharchik, Grigori; Kryuchkov, P. S.; Kurbakov, I. L.; Lozovik, Yu. E. (Multidisciplinary Digital Publishing Institute (MDPI), 2018-06-08)
      Article
      Open Access
      Ground-state properties of bosons interacting via inverse square potential (three dimensional Calogero-Sutherland model) are analyzed. A number of quantities scale with the density and can be naturally expressed in units ...

    • Three orders of magnitude enhancement of second and third harmonic generation in the visible and ultraviolet ranges from plasmonic gold nanogratings 

      Mukhopadhyay, Shroddha; Rodríguez Suñé, Laura; Cojocaru, Crina; Vincenti, M. A.; Anson Hallman, Kent; Leo, Giuseppe; Belchovski, Metodi; Ceglia, Domenico de; Scalora, Michael; Trull Silvestre, José Francisco (2023-04-07)
      Article
      Open Access
      We report experimental observations and numerical simulations of second and third harmonic generation from a gold nanograting, which exhibits a plasmonic resonance in the near infrared. The resonance is tunable, with a ...

    • Tunable plasmonic graphene antenna array for communications at THz frequencies 

      de Santana, Elana Pereira; Stock, Daniel; Wang, Zhenxing; Wang, Kun Ta; Abadal Cavallé, Sergi; Lemme, Max; Bolívar, Peter Haring (Institute of Electrical and Electronics Engineers (IEEE), 2023)
      Conference report
      Open Access
      The existence of plasmonic waves at a graphene/dielectric interface at THz frequencies enables the use of graphene as the radiative element of antennas working at this frequency range, but with a smaller lateral dimension ...