Browsing by Subject "Plasmons (Física)"

Now showing items 1-20 of 31

    • 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 ...

    • Integrated colloidal quantum dot photodetectors with color-tunable plasmonic nanofocusing lenses 

      Diedenhofen, Silke L.; Kufer, Dominik; Lasanta, Tania; Konstantatos, Gerasimos (Nature Publishin group, 2015-01-16)
      Article
      Open Access
      High-sensitivity photodetection is at the heart of many optoelectronic applications, including spectroscopy, imaging, surveillance, remote sensing and medical diagnostics. Achieving the highest possible sensitivity for a ...

    • 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 ...

    • 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 ...

    • Percolating plasmonic networks for light emission control 

      Gaio, Michele; Castro-Lopez, Marta; Renger, Jan; Hulst, Niek van; Sapienza, Riccardo (Royal Society of Chemistry, 2014-10-15)
      Article
      Open Access
      Optical nanoantennas have revolutionised the way we manipulate single photons emitted by individual light sources in a nanostructured photonic environment. Complex plasmonic architectures allow for multiscale light control ...

    • Phase-sensitive plasmonic biosensor using a portable and large field-of-view interferometric microarray imager 

      Yesilkoy, Filiz; Terborg, Roland A.; Pello, Josselin; Belushkin, Alexander A.; Jahani, Yasaman; Pruneri, Valerio; Altug, Hatice (Nature, 2018-02-23)
      Article
      Open Access
      Nanophotonics, and more specifically plasmonics, provides a rich toolbox for biomolecular sensing, since the engineered metasurfaces can enhance light–matter interactions to unprecedented levels. So far, biosensing ...

    • 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 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 ...