Browsing by Author "García de Abajo, Francisco Javier"
Now showing items 1-20 of 34
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Double-layer graphene for enhanced tunable infrared plasmonics
(Nature, 2017-06-02)
Article
Open AccessGraphene is emerging as a promising material for photonic applications owing to its unique optoelectronic properties. Graphene supports tunable, long-lived and extremely confined plasmons that have great potential for ... -
Electrical control of optical emitter relaxation pathways enabled by graphene
(Nature Publishing Group, 2015-01-19)
Article
Open AccessControlling 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, ... -
Electrically tunable nonlinear plasmonics in graphene nanoislands
(Nature Publishin group, 2014-12-11)
Article
Open AccessNonlinear optical processes rely on the intrinsically weak interactions between photons enabled by their coupling with matter. Unfortunately, many applications in nonlinear optics are severely hindered by the small response ... -
Electron diffraction by vacuum fluctuations
(IOP, 2020-10-29)
Article
Open AccessVacuum fluctuations are known to produce electron diffraction leading to decoherence and self-interference. These effects have so far been studied as either an extension of the Aharonov–Bohm effect in front of a planar ... -
Electron refraction at lateral atomic interfaces
(AIP, 2017-10-01)
Article
Open AccessWe present theoretical simulations of electron refraction at the lateral atomic interface between a “homogeneous” Cu(111) surface and the “nanostructured” one-monolayer (ML) Ag/Cu(111) dislocation lattice. Calculations ... -
Enhanced graphene nonlinear response through geometrical plasmon focusing
(AIP, 2018-01-01)
Article
Open AccessWe propose a simple approach to couple light into graphene plasmons and focus these excitations at focal spots of a size determined by the plasmon wavelength, thus producing high optical field enhancement that boosts the ... -
Enhancement of nonlinear optical phenomena by localized resonances
(ACS, 2018-01-20)
Article
Open AccessNonlinear optics at the nanoscale is severely limited by the small departure of available materials from linear behavior. Despite intense efforts placed into overcoming this problem using multiple strategies for enhancing ... -
Interference of surface plasmons and Smith-Purcell emission probed by angle-resolved cathodoluminescence spectroscopy
(APS, 2015-03-30)
Article
Open AccessWe 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 ... -
Mid-Infrared Plasmonic Biosensing with Graphene
(Science, 2015-07-10)
Article
Open AccessInfrared spectroscopy is the technique of choice for chemical identification of biomolecules through their vibrational fingerprints. However, infrared light interacts poorly with nanometric-size molecules. We exploit the ... -
Nonlinear Graphene Nanoplasmonics
(ACS, 2019-08-26)
Article
Open AccessNonlinear optics is limited by the weak nonlinear response of available materials, a problem that is generally circumvented by relying on macroscopic structures in which light propagates over many optical cycles, thus ... -
Nonlinear Interactions between Free Electrons and Nanographenes
(ACS, 2020-05-13)
Article
Open AccessFree electrons act as a source of highly confined, spectrally broad optical fields that are widely used to map photonic modes with nanometer/millielectronvolt space/energy resolution through currently available electron ... -
Nonlinear plasmonic response in atomically thin metal films
(De Gruyter, 2021-10-15)
Article
Open AccessNanoscale 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 ... -
Nonlinear Plasmonic Sensing with Nanographene
(APS, 2016-09-16)
Article
Open AccessPlasmons provide excellent sensitivity to detect analyte molecules through their strong interaction with the dielectric environment. Plasmonic sensors based on noble metals are, however, limited by the spectral broadening ... -
Optimization of Nanoparticle-Based SERS Substrates through Large-Scale Realistic Simulations
(ACS, 2016-12-20)
Article
Open AccessSurface-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 ... -
Phonon excitation by electron beams in nanographenes
(APS, 2015-09-30)
Article
Open AccessElectron beams have the ability of exciting vibrational modes (phonons) in molecules and nanoclusters, which can be currently probed with atomic spatial resolution through electron energy-loss spectroscopy (EELS). This ... -
Plasmon wave function of graphene nanoribbons
(IOP, 2015-08-06)
Article
Open AccessWe find the low-frequency optical response of highly doped individual and arrayed graphene nanoribbons to be accurately described in terms of plasmon wave functions (PWFs). More precisely, we focus on the lowest-order ... -
Plasmonics in atomically thin crystalline silver films
(2019-07-23)
Article
Open AccessLight-matter interaction at the atomic scale rules fundamental phenomena such as photoemission and lasing while enabling basic everyday technologies, including photovoltaics and optical communications. In this context, ... -
Plasmonics in atomically thin materials
(Royal Society of Chemistry, 2015-03-15)
Article
Open AccessThe 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
(APS, 2016-08-31)
Article
Open AccessWe 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
(ACS, 2015-09-18)
Article
Restricted access - publisher's policyAluminum 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 ...
