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Autor Alda, Javier |
Documentos disponibles escritos por este autor (63)
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López Alonso, José Manuel ; Rico-García, José María ; Alda, Javier | The Egyptian Society of Solid State Science | 2006Finite-Differences Time-Domain (FDTD) algorithms are well established tools of computational electromagnetism. Because of their practical implementation as computer codes, they are affected by many numerical artefact and noise. In order to obtai[...]texto impreso
López Alonso, José Manuel ; Alda, Javier ; Bernabeu Martínez, Eusebio | The Optical Society Of America | 2002-01-10Principal-component decomposition is applied to the analysis of noise for infrared images. It provides a set of eigenimages, the principal components, that represents spatial patterns associated with different types of noise. We provide a method[...]texto impreso
Cuadrado, Alexander ; Silva-López, Manuel ; López-Alonso, José Manuel ; Martínez Antón, Juan Carlos ; Ezquerro Rodríguez, José Miguel ; González, Francisco Javier ; Alda, Javier | SPIE | 2015-08-28One of the main technical difficulties in the fabrication of optical antennas working as light detectors is the proper design and manufacture of auxiliary elements as load lines and signal extraction structures. These elements need to be quite s[...]texto impreso
Mora Ventura, Brhayllan ; Díaz de León, Ramón ; García Torales, Guillermo ; Flores, Jorge L. ; Alda, Javier ; González, Francisco J. | SPIE | 2016-05-02Seebeck nanoantennas, which are based on the thermoelectric effect, have been proposed for electromagnetic energy harvesting and infrared detection. The responsivity and frequency dependence of three types of Seebeck nanoantennas is obtained by [...]texto impreso
Briones, Edgar ; Briones, Joel ; Martínez Antón, Juan Carlos ; Cuadrado, Alexander ; McMurtry, Stefan ; Hehn, Michel ; Montaigne, François ; Alda, Javier ; González, Francisco Javier | 2014-12-08Abstract— In this letter we introduce a new type of infrared sensor, based on thermocouple nanoantennas, which enables the energy detection and gathering in the mid-infrared region. The proposed detector combines the Seebeck effect, as a transdu[...]texto impreso
Briones, Edgar ; Briones, Joel ; Cuadrado, Alexander ; Martínez Antón, Juan Carlos ; McMurtry, Stefan ; Hehn, Michel ; Montaigne, François ; Alda, Javier ; González, Francisco Javier | American Institut of Physics | 2014We propose a mid-infrared device based on thermocouple optical antennas for light sensing and energy harvesting applications. We numerically demonstrate that antennas are able to generate low-power dc signals by beneficing of the thermoelectric [...]texto impreso
Briones, Edgar ; Cuadrado, Alexander ; Briones, Joel ; Díaz de León, Ramón ; Martínez-Antón, Juan Carlos ; McMurtry, Stefan ; Hehn, Michel ; Montaigne, François ; Alda, Javier ; González, Francisco Javier | Optical Society of America (OSA) | 2014-09-17Arrays of metallic thermocouples in the shape of spiral nanoantennas are proposed as infrared detectors, which use the thermoelectric properties of the metallic interfaces to generate electrical DC signals. The responsivity of these types of ant[...]texto impreso
Alda, Javier ; López Alonso, José Manuel ; Rico García, José María ; Zoido Chamorro, Jesús Manuel ; Boreman, Glenn | SPIE | 2004-04-15The miniaturization of light detectors in the visible and infrared has produced devices with micrometric and sub-micrometric spatial features. Some of these spatial features are closely linked with the physical mechanism of detection. An example[...]texto impreso
Cuadrado Conde, Alexander ; López Alonso, José Manuel ; González, Francisco Javier ; Alda, Javier | Springer Science+Business Media | 2017When optical antennas are used as light detectors, temperature changes their spectral response. Using this relation, we determine the spectrum of a light beam from an optical antenna’s signal. A numerical evaluation of the temperature-spectral r[...]texto impreso
Cuadrado, Alexander ; González, Francisco Javier ; Alda, Javier | 2014-03-24Directional steerability can be obtained for an array of optical antennas through selective heating of the individual elements. Heating changes electrical conductivity of the heated element, which affects the phase of the generated currents. The[...]texto impreso
La utilización de los foros, en sus vertientes formal e informal, es analizada en el marco de la enseñanza semipresencial. Los foros informales, como vehículo para la expresión de las emociones, se proponen como una herramienta de retroalimentac[...]texto impreso
Elshorbagy, Mahmoud Hamdy Mohamed ; Cuadrado Conde, Alexander ; García Cámara, Braulio ; Vergaz Benito, Ricardo ; Gómez Pedrero, José Antonio ; Alda, Javier | IEEE | 2019-12-18We configure and analyze a nanostructured device that hybridizes grating modes and surface plasmon resonances. The model uses an effective index of refraction that considers the volume fraction of the involved materials, and the propagation dept[...]texto impreso
González, Francisco Javier ; Alda, Javier ; Moreno-Cruz, B. ; Martínez-Escanamé, M. ; Ramírez-Elias, M.G. ; Torres-Alvarez, B ; Moncada, B. | Wiley | 2011-02Background Filaggrin (FLG) gene mutations, which result in complete or incomplete loss of proFLG/FLG peptides, have been reported as an important predisposing factor for atopic dermatitis (AD) and secondary atopic phenotypes such as atopic asth[...]