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Monitoring the Photothermal Reshaping of Individual Plasmonic Nanorods with Coherent Mechanical Oscillations
(2018-12-03)
Light absorption in gold nanoparticles leads to metal heating that induces photothermal reshaping because of atomic surface diffusion at temperatures well below the gold melting point. In this work, we perform time-resolved ...
Nanorod-based plasmonic substrates with predefined optical resonances
(2018)
To design and fabricate plasmonic substrates to be used in ultrasensitive chemical sensing or surfaceenhanced
spectroscopies, it is important to achieve control on the morphology, dimensions and
surface density of metallic ...
High resolution imaging using nanoparticle based probes
(2018)
New plasmonic probes, based on silica microspheres decorated with metal
nanoparticles (Figure 1), are built and used to confine and enhance the electric field
in their interaction with the sample, giving ultra-high optical ...
Síntesis de nanopartículas híbridas dieléctrico-metal y estudio de sus propiedades ópticas
(2018)
Se sintetizaron y estudiaron nanopartículas esféricas del tipo núcleo-cáscara de sílice y oro, con control de sus dimensiones. En una primera etapa se realizó la síntesis de esferas de SiO2 monodispersas de varios tamaños, ...
Reconstrucción de imágenes topográficas para caracterización de superficies mediante microscopía óptica de baja coherencia
(Congreso Internacional de Metalurgia y Materiales SAM-CONAMET 2018, 2018-10-30)
Se presenta la técnica de microscopía óptica de baja coherencia en el dominio de las frecuencias (OCM-FD) para la obtención de imágenes 3D que permiten reconstruir la topografía de una superficie. La técnica puede ser ...
Improved spectral resolution in time-varying interferometry
(2018-11)
In this work, we present a procedure that allows increasing the resolution of dynamic length measurements made by spectral interferometry. The proposed scheme leads to obtaining a compact photonic instrument with the ability ...