Now showing items 1-18 of 18

  • Blackbody behaviour from spiked macroporous silicon photonic crystals 

    Vega Bru, Didac; Todorov Trifonov, Trifon; Hernández Díaz, David; Rodríguez Martínez, Ángel; Alcubilla González, Ramón (2011)
    Conference lecture
    Restricted access - publisher's policy
    Photonic Crystals (PhC) are structured materials, which show very attractive optical properties. In this report, we study and discuss the reflection and emission characteristics of a “black face” Macro-porous Silicon (MpSi) ...
  • Catalytic membrane reactors based on macroporous silicon for hydrogen production 

    Vega Bru, Didac; Hernández Díaz, David; López, E.; Jiménez, Nuria; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón; Llorca Piqué, Jordi (2010)
    Conference report
    Open Access
    The typology of using hydrogen as an energy carrier and its implementation in portable fuel cells has motivated a considerable research interest in the development of new efficient hydrogen production technologies. Hydrogen ...
  • Compact device for CO2 optical sensing using macroporous silicon photonic crystals 

    Vega Bru, Didac; Rodríguez Martínez, Ángel; Todorov Trifonov, Trifon; Calavia, Raul; Vilanova, Xavier (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Open Access
    A photonic crystal based on a macroporous silicon structure has been fabricated and successfully used for the detection of carbon dioxide. In this paper, the device and the measurement results are presented. The sensing ...
  • Development and impedimetric evaluation of a magnetic interdigitated microelectrode 

    Sánchez Terrones, Benjamin; Vega Bru, Didac; Rodríguez Martínez, Ángel; Bragós Bardia, Ramon; Marco Colas, María Pilar; Valera Cano, Enrique Andrés (2014-11-01)
    Article
    Restricted access - publisher's policy
    A magnetic interdigitated microelectrode (m-ID mu E) has been developed, characterized and evaluated. In order to demonstrate the potential use of these electrodes in the biosensors field, impedimetric measurements of ...
  • Development of gas sensors based in photonic cristal slabs 

    Yoosefi, Oraman; Yahyapour, MJ; Segura García, Daniel; Vega Bru, Didac; Dios Otín, Víctor Federico; Rodríguez Martínez, Ángel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    This work describes an innovative application of structures of photonic crystal slabs for gas sensors. Structures consisting in double ring have been studied by simulation. Their working mechanism is based in the effect ...
  • Impact of the absorption in transmittance and reflectance on macroporous silicon photonic crystals 

    Cardador Maza, David; Vega Bru, Didac; Rodríguez Martínez, Ángel (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Open Access
    The characteristics of reflection and transmission peaks in the spectra of photonic crystals have been studied theoretically and the results compared to measurements performed in fabricated samples. The aim of this work ...
  • Improved transmission and thermal emission in macroporous silicon photonic crystals with 700 NM pitch 

    Cardador Maza, David; Vega Bru, Didac; Segura García, Daniel; Rodríguez Martínez, Ángel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference lecture
    Open Access
  • Macroporous silicon : a next generation catalytic monolith for ethanol steam reforming 

    Vega Bru, Didac; Hernández Díaz, David; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón; López, E.; Jiménez, Nuria; Llorca Piqué, Jordi (Publicacions de la Universitat de València (PUV), 2011)
    Conference report
    Restricted access - publisher's policy
    Macroporous silicon membranes, consisting of straight parallel pores with a diameter of 3.3μm and depth/width ratio >60, are used as microreactors for high efficiency hydrogen generation via steam reforming of ethanol. The ...
  • Macroporous silicon for high-capacitance devices using metal electrodes 

    Vega Bru, Didac; Reina Marsinyach, Jordi; Martin, Ferran; Pavón Urbano, Ramón; Rodríguez Martínez, Ángel (2014-09-05)
    Article
    Open Access
    In this paper, high-capacity energy storage devices based on macroporous silicon are demonstrated. Small footprint devices with large specific capacitances up to 100 nF/mm(2), and an absolute capacitance above 15 mu F, ...
  • Macroporous silicon. Technology and applications 

    Vega Bru, Didac; Rodríguez Martínez, Ángel (InTech - Open science/Open minds, 2017-06)
    Part of book or chapter of book
    Open Access
    The knowledge of fundamental silicon questions and all aspects of silicon technology gives the possibility of improvement to both initial silicon material and devices on silicon basis. The articles for this book have been ...
  • Negative Refraction Index in 3D MAcroporous Silicon Photonic Crystals 

    Vega Bru, Didac; Todorov Trifonov, Trifon; Hernández García, David; Rodríguez Martínez, Ángel; Alcubilla González, Ramón (2011)
    Conference report
    Restricted access - author's decision
    Photonic crystals (PhC) are sturctured materials, which show very attractive propieties, specially their optical behaviour and electromagnetic wave propagation. In this paper, we simulate a three-dimensional Photonic ...
  • Novel Electronic Devices in Macroporous Silicon: Design of FET Transistors for Power Applications 

    Rodríguez Martínez, Ángel; Vega Bru, Didac; Najar, R.; Pina, M. (2011-07)
    Article
    Restricted access - publisher's policy
    In this paper, we study the application of macroporous silicon (MpSi) to the fabrication of transistors: Four different FET transistor structures are proposed using MpSi as the base material. These devices have been studied ...
  • Simulation and analysis of photonic structures in macroporous silicon 

    Vega Bru, Didac (Universitat Politècnica de Catalunya, 2009-07-13)
    Master thesis (pre-Bologna period)
    Open Access
    This Master Thesis is dedicated to photonic crystal, in particular to macroporous silicon. We introduce the concepts of crystallography, and symmetry, and important associated tools to its study, the Reciprocal lattice, ...
  • Study of resonant modes in a 700 nm pitch macroporous silicon photonic crystal 

    Cardador Maza, David; Vega Bru, Didac; Segura García, Daniel; Rodríguez Martínez, Ángel (2017-01-01)
    Article
    Open Access
    In this study the modes produced by a defect inserted in a macroporous silicon (MP) photonic crystal (PC) have been studied theoretical and experimentally. In particular, the transmitted and reflected spectra have been ...
  • The effect of absorption losses on the optical behaviour of macroporous silicon photonic crystal selective filters 

    Vega Bru, Didac; Cardador Maza, David; Todorov Trifonov, Trifon; Garin Escriva, Moises; Rodríguez Martínez, Ángel (2016-02-15)
    Article
    Open Access
    The effect of losses in photonic crystal structures on transmittance and reflectance has been studied by numerical techniques, and compared to fabricated macroporous silicon samples. Material absorption and tolerances of ...
  • Transmission and thermal emission in the NO2 and CO absorption lines using macroporous silicon photonic crystals with 700 Nm pitch 

    Cardador Maza, David; Segura García, Daniel; Vega Bru, Didac; Rodríguez Martínez, Ángel (Scitepress, 2017)
    Conference lecture
    Open Access
  • Tuning the emissivity of 3D macroporous silicon in the mid-infrared 

    Hernández Díaz, David; Vega Bru, Didac; Garin Escriva, Moises; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón (2010)
    Conference report
    Open Access
    Tailoring the thermal emission of a particular material by using periodic micro-structures has attracted great interest for its potential applications in heating and lighting systems or thermophotovoltaics. […] Metallic ...
  • Variación de la frecuencia de trabajo en un cristal fotónico basado en silicio macroporoso al variar la longitud del defecto 

    Cardador, D.; Vega Bru, Didac; Rodríguez Martínez, Ángel (2015)
    Conference report
    Open Access
    En este trabajo se ha estudiado la relación existente entre la frecuencia de trabajo de un cristal fotónico con defecto y el tamaño de dicho defecto. Las simulaciones indican una dependencia lineal entre ambas, a la vez ...