Now showing items 1-14 of 14

  • 3D metallo-dielectric structures combining electrochemical and electroplating techniques 

    Hernández Díaz, David; Lange, D.; Todorov Trifonov, Trifon; Garin Escriva, Moises; García Molina, Francisco Miguel; Rodríguez Martínez, Ángel; Alcubilla González, Ramón (2010-06)
    Article
    Restricted access - publisher's policy
    Three-dimensional (3D) periodic nickel micro-structures with a periodicity of 4 μm and high number of structural periods were fabricated by electrodeposition. Macroporous silicon, consisting of periodic arrays of sine-wave ...
  • A million-channel CO-PrOx microreactor on a fingertip for fuel cell application 

    Llorca Piqué, Jordi; Rosell, O.; Divins, N.J.; López, E.; Roig Costa, Maria; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; González de Rivera, F.; Rodríguez, L.I.; Seco, M. (2010)
    Article
    Restricted access - publisher's policy
    A silicon micromonolith containing ca.40000 regular channels of 3.3 μm in diameter per square millimeter has been successfully functionalized with anAu/TiO2 catalyst for CO preferential oxidation(CO-PrOx) in the presence ...
  • 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 ...
  • CO removal at the nanoscale: A 1-cent gold prox reactor 

    Llorca Piqué, Jordi; Rosell, O.; Jiménez, Nuria; López, E.; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; González de Rivera, G.; Rodríguez, L.I.; Rodríguez, M.; Seco, M. (2010)
    Conference report
    Restricted access - author's decision
  • Emissive properties of SiO2 thin films through photonic windows 

    Hernández García, David; Garin Escriva, Moises; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón (2012-02)
    Article
    Open Access
  • Improving selective thermal emission properties of three-dimensional macroporous silicon through porosity tuning 

    Garin Escriva, Moises; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón; Marquier, F.; Arnold, C.; Greffet, J.-J. (American Institute of Physics, 2008-08-27)
    Article
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    We present a theoretical and experimental study on the effect of progressive porosity increase, through multiple oxidation/oxide removal steps, upon the optical characteristics in threedimensional macroporous silicon. ...
  • Infrared thermal emission inmacroporous silicon three-dimensional photonics crystals 

    Garin Escriva, Moises; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón (American Institute of Physics, 2007-07-30)
    Article
    Restricted access - publisher's policy
    In this paper we investigate the infrared thermal emission properties of macroporous silicon with modulated pore diameter. Samples with different pore modulation periodicities but fixed in-plane lattice constant are ...
  • 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 ...
  • 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 ...
  • Synthesis of ordered polymer micro and nanostructures via porous templates 

    Palacios, R.; Formentín, P.; Santos, A.; Todorov Trifonov, Trifon; Pallarés, J.; Alcubilla González, Ramón; Marsal, L. F. (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
    Conference report
    Open Access
    The deposition of specific materials into ordered pores arranged in a regular lattice allows the fabrication of ordered fiber arrays. Polymer micro- and nanofibers using macroporous silicon and nanoporous alumina templates ...
  • Template fabrication of 3D metallic microstructures by electrochemical etching and electroplanting 

    Hernández Díaz, David; Lange, Diego; Todorov Trifonov, Trifon; Garin Escriva, Moises; García Molina, Francisco Miguel; Rodríguez Martínez, Ángel; Alcubilla González, Ramón (2010)
    Conference report
    Open Access
    In this work, we show that macroporous silicon consisting of periodic arrays of etched pores is a feasible alternative for synthesis of 2D and 3d metallic microstructures due to its flexibility in the definition of complex ...
  • 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 ...
  • Vertical hybrid microcavity based on a polymer layer sandwiched between porous silicon photonic crystals 

    Sychev, F. Yu; Razdolski, E.; Murzina, T. V.; Aktsipetrov, O.A.; Todorov Trifonov, Trifon; Cheylan, S. (2009)
    Article
    Open Access
    A vertical hybrid microcavity is fabricated by sandwiching a polymer layer between distributed Bragg reflectors (DBRs) composed of porous silicon photonic crystals. The DBRs are made by electrochemical etching of Si and ...