Browsing by Contributor "García de Abajo, Francisco Javier"

Now showing items 1-11 of 11

    • 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 ...

    • Classical and quantum aspects of the optical response at the nanoscale 

      Martínez Saavedra, José Ramón (Universitat Politècnica de Catalunya, 2018-12-10)
      Doctoral thesis
      Open Access
      Nanophotonics is one of today’s basic sciences and technologies: an in-depth understanding of the interaction between light and matter on the nano-scale, besides its intrinsic associated scientific interest, enables the ...

    • Effect of electron-phonon coupling on the lifetimes of plasmons in graphene nanoislands 

      Martínez Saavedra, José Ramón (Universitat Politècnica de Catalunya, 2014-09-09)
      Master thesis
      Open Access
      [ANGLÈS] We show that the electron-phonon coupling in graphene planar nanostructures gives rise to an enrichment of the absorption spectra around the plasmonic resonances that these structures can support. Furthermore, we ...

    • Nanophotonics of ultrathin films and 2D periodic structures: a combined experimental and theoretical study 

      Mkhitaryan, Vahagn (Universitat Politècnica de Catalunya, 2017-09-29)
      Doctoral thesis
      Open Access
      Photonics is a key enabling technology for many applications ranging from communications to energy and medicine. Its success is largely relying on our capability to appropriately control light in optical devices. To this ...

    • Nanophotonics with charged particles 

      Giulio, Valerio di (Universitat Politècnica de Catalunya, 2023-04-12)
      Doctoral thesis
      Open Access
      (English) Among the fundamental constituents of matter, charged particles such electrons and positrons are leading protagonists in physical phenomena associated with small (~ meV) and high (~ MeV) energy scales. For example, ...

    • Nanoscale manipulation of optical fields 

      Dias, Eduardo José Machado Correia Brioso (Universitat Politècnica de Catalunya, 2022-11-18)
      Doctoral thesis
      Open Access
      (English) Besides its relevant fundamental interest, the in-depth understanding of light-matter interactions at the nanoscale has a profound impact on modern technological applications in diverse areas including ...

    • Nonlocal and nonlinear effects in nanophotonics 

      Rodríguez Echarri, Álvaro (Universitat Politècnica de Catalunya, 2022-12-12)
      Doctoral thesis
      Open Access
      (English) The fundamental science and technological applications of light-matter interactions on nanometer length scales form the field of study known as nanophotonics. Explorations in nanophotonics expand our understanding ...

    • 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-electron interactions in low dimensional materials 

      De Vega Esteban, Sandra (Universitat Politècnica de Catalunya, 2020-02-17)
      Doctoral thesis
      Open Access
      Ever since the advent of modern technology, major developments have come hand in hand with miniaturization and speed of operation. A proof of this is provided by the impressive success of Moore's law, which predicted that ...

    • Thermal and optical-gain effects in nanophotonics with applications to sensing and perfect absorption 

      Meng, Lijun (Universitat Politècnica de Catalunya, 2018-12-11)
      Doctoral thesis
      Open Access
      Surface plasmons, which are characteristic oscillations of induced charges at metal surfaces that can interact strongly with light, are a key topic in nanophotonics. It can tightly confine the optical electric energy in ...

    • Toward next-generation nanophotonic devices 

      Yu, Renwen (Universitat Politècnica de Catalunya, 2019-07-11)
      Doctoral thesis
      Open Access
      In this thesis, we aim to explore several novel designs of nanostructures based on graphene to realize various functionalities. We briefly introduce the fundamental concepts and theoretical models used in this thesis in ...