179 citations · 258 across the 14 of their papers we have counts for
16 papers
Thermal Confinement in Plasmonic Nanoparticles under Generalised Pulsed Illumination
Javier González-Colsa, Dolores Ortiz, José María Saiz +4
Thermal confinement is a key parameter in photothermal applications, as it determines the spatial extent of the region affected by the generated heat. In this work, we develop a nu…
From Single-Particle Thermal Asymmetry to Collective Control: Janus Plasmonic Colloids for Photothermal Applications
Cédric Rousseau, Javier González-Colsa, Victor Joris +3
Janus nanoheaters provide a route to break the spatial symmetry of thermoplasmonic heating and generate directionally biased thermal gradients at the nanoscale. However, in realist…
Enhanced Enantioselective Optical Trapping enabled by Longitudinal Mie Resonances in Silicon Nanodisks
Guillermo Serrera, Pablo Albella
Optical enantioseparation of nanoscale matter is fundamentally limited by the intrinsic weakness of chiroptical forces compared to the dominant achiral gradient forces and thermal…
Design Principles for Tailoring Heat Transport via Iris-Gated Core-Double-Shell Nanoparticles in the Context of Photothermal Therapies
Javier González-Colsa, Fernando Bresme, Pablo Albella
The rational design of Janus nanostructures that combine efficient optical absorption with controlled thermal transport is essential for advancing plasmonic photothermal therapies…
Color Routing and Beam Steering of Single-Molecule Emission with a Spherical Silicon Nanoantenna
Maria Sanz-Paz, Nicole Siegel, Guillermo Serrera +7
Single-photon emitters radiate as electric dipoles, which limits light collection efficiency and complicates integration into flat photonic devices. Developing nanophotonic structu…
3-dimensional plasmonic nanomotors enabled by independent integration of Optical Pulling and Lateral Forces
Guillermo Serrera, Yoshito Y. Tanaka, Pablo Albella
Light-matter interactions generally involve momentum exchange between incident photons and the target object giving rise to optical forces and torques. While typically weak, they b…
Distance dependent interaction between a single emitter and a single dielectric nanoparticle using DNA origami
Nicole Siegel, María Sanz-Paz, Javier González-Colsa +8
Optical nanoantennas can manipulate light-matter interactions at the nanoscale, modifying the emission properties of nearby single photon emitters. To date, most optical antennas a…
Amplified linear and nonlinear chiral sensing assisted by anapole modes in hybrid metasurfaces
Guillermo Serrera, Javier González-Colsa, Pablo Albella
The interaction between chiral molecules and circularly polarized light is largely influenced by the local optical chirality density. This interaction prompts substantial demand of…
Designing thermoplasmonic polymersomes for photothermal therapy
Valentino Barbieri, Javier González-Colsa, Diana Matias +6
Polymersomes, vesicles self-assembled from amphiphilic polymers, are promising nanocarriers for the targeted intracellular delivery of therapeutics. Integrating inorganic light-abs…
Enhanced thermo-optical response by means of anapole excitation
Javier González-Colsa, Juan D. Olarte-Plata, Fernando Bresme +1
High refractive index dielectric nanostructures offer a versatile platform to control light-matter interaction at the nanoscale as they can easily support electric and magnetic mod…
Gradient-free temperature control over micrometric areas for thermoplasmonic applications in micro-and nano-devices
Javier González-Colsa, Francisco Marques-Moros, Mohsen Rahmani +4
Control over surface temperature is of paramount importance in optoelectronics, photocatalysis and biosensing applications, among others. Thermoplasmonic approaches have demonstrat…
Efficient Asymmetric photothermal source: Designing a heating Janus-Nanojet
Javier González-Colsa, Alfredo Franco Pérez, Fernando Bresme +2
Janus particles have flourished as subject of intensive research due to their synergetic properties and their promising use in different fields, especially in biomedicine. The comb…
Gold nanodoughnut as an outstanding nanoheater for photothermal applications
Javier González-Colsa, Guillermo Serrera, José María Saiz +5
Photoinduced hyperthermia is a cancer therapy technique that induces death to cancerous cells via heat generated by plasmonic nanoparticles. While previous studies have shown that…
Spectral behavior of localized plasmon resonances in the near- and far-field regimes. Comment on The spectral shift between near- and far-field resonances of optical nano-antennas
Fernando Moreno, Pablo Albella, Manuel Nieto-Vesperinas
In a recent paper by Menzel et al. (Opt. Exp. 22, 9971 (2014)), its authors analyze the spectral red-shift effect of plasmonic resonances of metallic nano-antennas between the far-…
Experimental Verification of the Spectral Shift between Near- and Far-Field Peak Intensities of Plasmonic Nanoantennas
P. Alonso-Gonzalez, P. Albella, F. Neubrech +8
Theory predicts a distinct spectral shift between the near- and far-field optical responses of plasmonic antennas. Here we combine near-field optical microscopy and far-field spect…
Detection of deep-subwavelength dielectric layers at terahertz frequencies using semiconductor plasmonic resonators
Audrey Berrier, Pablo Albella, M. Ameen Poyli +4
Plasmonic bowtie antennas made of doped silicon can operate as plasmonic resonators at terahertz (THz) frequencies and provide large field enhancement close to their gap. We demons…