Now showing items 1-20 of 28

    • Active Control of Surface Plasmon Waveguides with a Phase Change Material 

      Rudé, Miquel; Simpson, Robert E.; Quidant, Romain; Pruneri, Valerio; Renger, Jan (2015-05-25)
      Article
      Open Access
      The ability to manipulate light propagation at the nanoscale is of vital importance for future integrated photonic circuits. In this work we exploit the high contrast in the optical properties of the phase change material ...
    • Atomically flat gold structures 

      De Vega Esteban, Sandra (Universitat Politècnica de Catalunya, 2015-09-10)
      Master thesis
      Open Access
      We study the optical response of plasmons in atomic gold wires similar to those observed in vicinal silicon surfaces decorated with a sub-monolayer film of this metal. We predict substantial coupling to propagating light ...
    • Coupling of individual quantum emitters to channel plasmons 

      Bermúdez-Ureña, Esteban; Gonzalez-Ballestero, Carlos; Geiselmann, Michael; Marty, Renaud; Radko, Ilya P; Holmgaard, Tobias; Alaverdyan, Yury; Moreno, Esteban; García-Vidal, Francisco J. G; Bozhevolnyi, Sergey I.; Quidant, Romain (Nature Publishing Group, 2015-08-07)
      Article
      Open Access
      Efficient light-matter interaction lies at the heart of many emerging technologies that seek on-chip integration of solid-state photonic systems. Plasmonic waveguides, which guide the radiation in the form of strongly ...
    • Enantiomer-selective molecular sensing using racemic nanoplasmonic arrays 

      García-Guirado, Jose; Svedendahl, Mikael; Puigdollers, Joaquim; Quidant, Romain (ACS, 2018-09-14)
      Article
      Open Access
      Building blocks of life show well-defined chiral symmetry which has a direct influence on their properties and role in Nature. Chiral molecules are typically characterized by optical techniques such as circular dichroism ...
    • 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
      Open Access
      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 ...
    • Integral Equation MEI (IE-MEI) analysis of 2D homogeneous lossy dielectric and plasmonic scatterers 

      Planes Conangla, Gerard (Universitat Politècnica de Catalunya, 2015-09-04)
      Master thesis (pre-Bologna period)
      Open Access
      This work revisits the IE-MEI method, previously only applied to perfect conductors, and proposes a new formulation for high-loss dielectric piecewise-homogeneous media. The aim is to assess if the fast attenuation of elds ...
    • 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 ...
    • Machine learning for knowledge acquisition and accelerated inverse-design for non-Hermitian systems 

      Ahmed, Waqas W.; Farhat, Mohamed; Staliunas, Kestutis; Zhang, Xiangliang; Wu, Ying (2023-12-01)
      Article
      Open Access
      Non-Hermitian systems offer new platforms for unusual physical properties that can be flexibly manipulated by redistribution of the real and imaginary parts of refractive indices, whose presence breaks conventional wave ...
    • Metal-insulator-semiconductor heterostructures for plasmonic hot-carrier optoelectronics 

      García de Arquer, Francisco Pelayo; Konstantatos, Gerasimos (OSA, 2015-06-01)
      Article
      Open Access
      Plasmonic hot-electron devices are attractive candidates for light-energy harvesting and photodetection applications. For solid state devices, the most compact and straightforward architecture is the metalsemiconductor Schottky ...
    • Mid-infrared gas sensing using graphene plasmons tuned by reversible chemical doping 

      Bareza, Néstor; Gopalan, Kavitha K.; Alani, Rose; Paulillo, Bruno; Pruneri, Valerio (2020-04-15)
      Article
      Open Access
      Highly confined plasmon modes in nanostructured graphene can be used to detect tiny quantities of biological and gas molecules. In biosensing, a specific biomarker can be concentrated close to graphene, where the optical ...
    • Nanoplasmonics: Concluding remarks 

      Hulst, Niek F. van (Royal Society of Chemistry, 2015-04-30)
      Article
      Open Access
      Faraday Discussions have a splendid reputation in stimulating scientic debates along the traditions set by Michael Faraday himself. The Faraday Discussion 178 on nanoplasmonics has been particularly appropriate. ...
    • Nonlinear plasmonic response in atomically thin metal films 

      Rodríguez Echarri, Álvaro; Cox, Joel D.; Iyikanat, Fadil; García de Abajo, Francisco Javier (De Gruyter, 2021-10-15)
      Article
      Open Access
      Nanoscale nonlinear optics is limited by the inherently weak nonlinear response of conventional materials and the small light–matter interaction volumes available in nanostructures. Plasmonic excitations can alleviate these ...
    • 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 ...
    • Optimizing the coupling of light to plasmons through engineered dipolar scatterers 

      Abdullah, Saad (Universitat Politècnica de Catalunya, 2021-08-30)
      Master thesis
      Restricted access - author's decision
      Covenantee:   Institut de Ciències Fotòniques (ICFO) / Universitat de Barcelona / Universitat Autònoma de Barcelona
      Surface polaritons are key elements in multiple applications within the field of nanopho- tonics because of their ability to concentrate electromagnetic energy down to length scales comparable to the wavelength λ0 of ...
    • Plasmon enhanced chirality 

      García Guirado, Jose María (Universitat Politècnica de Catalunya, 2013-07-19)
      Master thesis
      Open Access
      [ANGLÈS] An experimental set-up to measure plasmon-enhanced Circular Dichroism (CD) on Planar Chiral Metamaterials (PCM) has been designed, built and tested. PCMs, made of two-dimensional arrays of metallic nano-particles, ...
    • Plasmonic antenna coupling to hyperbolic phonon-polaritons for sensitive and fast mid-infrared photodetection with graphene 

      Castilla Gómez, Manuel Sebastián; Vangelidis, Ioannis; Pusapati, Varun Varma; Goldstein, Jordan; Autore, Marta; Slipchenko, Tetiana; Rajendran, Khannan; Kim, Seyoon; Watanabe, K.; Taniguchi, T.; Martín Moreno, Luis; Englund, Dirk; Tielrooij, Klaas-Janer; Hillenbrand, Rain; Lidorikis, Elefterios; Koppens, Frank H. L. (2020-12)
      Article
      Open Access
      Integrating and manipulating the nano-optoelectronic properties of Van der Waals heterostructures can enable unprecedented platforms for photodetection and sensing. The main challenge of infrared photodetectors is to ...
    • 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 ...
    • 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 ...