Ara es mostren els items 21-40 de 79

    • Development of microstructured zeolite films as highly accessible catalytic coatings for microreactors 

      Urbiztondo Castro, Miguel Ángel; Valera Cano, Enrique Andrés; Todorov Trifonov, Trifon; Alcubilla González, Ramón; Irusta Alderete, Silvia; Pina Iritia, María Pilar; Rodríguez Martínez, Ángel; Santamaria Ramiro, Jesus (2007-08-15)
      Article
      Accés restringit per política de l'editorial
      Regular structures of SiO2 microneedles and Si micromonoliths have been formed using processing methods similar to those used in the microelectronics field; then these structures have been used as supports for zeolite ...
    • Effects of symmetry reduction in two-dimensional square and triangular lattices 

      Todorov Trifonov, Trifon; Marsal, L F; Rodríguez Martínez, Ángel; Pallarès Marzal, Josep; Alcubilla González, Ramón (2004-06)
      Article
      Accés restringit per política de l'editorial
      We investigate the absolute photonic band gap (PBG) formation in two-dimensional (2-D) photonic crystals designed using symmetry reduction approach. The lattice symmetry, shape and orientation of dielectric scatterers ...
    • Electrical transport and impedance analysis of Au/porous silicon thin films 

      Fonthal, Faruk; Goyes, C; Rodríguez Martínez, Ángel (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
      Text en actes de congrés
      Accés restringit per decisió de l'autor
      In order to obtain electronic devices based on PS/p-Si structure, we present a study the AC conductivity and Thermo-electrical behavior of Porous Silicon (PS) layers prepared by electrochemical etching in p-type ...
    • 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
      Accés obert
    • Empirical demonstration of CO2 detection using macroporous silicon photonic crystals as selective thermal emitters 

      Cardador Maza, David; Segura García, Daniel; Deriziotis, Ioannis; Garin Escriva, Moises; Llorca Piqué, Jordi; Rodríguez Martínez, Ángel (2019-09-15)
      Article
      Accés obert
      This study describes the detection of CO2 using macroporous silicon photonic crystals as thermal emitters. It demonstrates that the reduction of structural nonhomogeneities leads to an improvement of the photonic crystals’ ...
    • Examen Final 

      Altet Sanahujes, Josep; Bermejo Broto, Sandra; Fernández Chimeno, Mireya; Martín García, Isidro; Orpella García, Alberto; Ortega Villasclaras, Pablo Rafael; Prat Viñas, Lluís; Puigdollers i González, Joaquim; Rodríguez Martínez, Ángel; Voz Sánchez, Cristóbal (Universitat Politècnica de Catalunya, 2013-01-08)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Bermejo Broto, Sandra; Fernández Chimeno, Mireya; Guede Fernández, Federico; Martín García, Isidro; López González, Juan Miguel; Ortega Villasclaras, Pablo Rafael; Puigdollers i González, Joaquim; Rodríguez Martínez, Ángel; Vargas Drechsler, Manuel; Voz Sánchez, Cristóbal (Universitat Politècnica de Catalunya, 2019-01-15)
      Examen
      Accés restringit a la comunitat UPC
    • Fabrication of flexible interdigitated µ-electrodes (FIDµEs) for the development of a conductimetric immunosensor for atrazine detection based on antibodies labelled with gold nanoparticles 

      Valera Cano, Enrique Andrés; Muñiz, David; Rodríguez Martínez, Ángel (2010)
      Article
      Accés restringit per política de l'editorial
      The present paper describes a simple and low-cost method for the fabrication of mechanically flexible interdigitated μ-electrodes (FIDμEs) and its application as immunosensor. FIDμEs consist of two coplanar non-passivated ...
    • Fabrication of silicon oxide microneedles from macroporous silicon 

      Rodríguez Martínez, Ángel; Molinero, D; Valera Cano, Enrique Andrés; Todorov Trifonov, Trifon; Marsal, L F; Pallarès Marzal, Josep; Alcubilla González, Ramón (2005-04)
      Article
      Accés restringit per política de l'editorial
      This paper presents a novel technique for silicon dioxide (SiO2) microneedle fabrication. Microneedles are hollow microcapillaries with tip diameters in the range of micrometers. They can be used in the fabrication of ...
    • Fabrication of two- and three-dimensional photonic crystals by electrochemical etching of silicon 

      Todorov Trifonov, Trifon; Marsal, L F; Rodríguez Martínez, Ángel; Pallarès Marzal, Josep; Alcubilla González, Ramón (2005-05)
      Article
      Accés restringit per política de l'editorial
      This paper reports on the fabrication of two-dimensional macropore arrays by electrochemical etching of silicon. We describe some critical effects accompanying the etching process that can generate imperfections in the ...
    • First use of macroporous silicon loaded with catalyst film for a chemical reaction: a microreformer for producing hydrogen from ethanol steam reforming 

      Llorca Piqué, Jordi; Casanovas Grau, Albert; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón (2008-04-25)
      Article
      Accés restringit per política de l'editorial
      Macroporous silicon with millions of parallel microchannels per square centimeter can be used as a micromonolithic support for high-speed catalysis in miniaturized systems, opening a new and exciting field of research and ...
    • High aspect ratio silicon dioxide pillars 

      Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Servera, F; Marsal, L F; Pallarès Marzal, Josep; Alcubilla González, Ramón (2005-06)
      Article
      Accés restringit per política de l'editorial
      This article describes the benefits of including cross-layer information in the scheduling mechanism of a UMTS downlink channel. In particular, the information obtained from the fast power control algorithm is used to ...
    • High yield hydrogen production enabled by macroporous silicon monoliths 

      Vega Bru, Didac; Jiménez Divins, Nuria; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Llorca Piqué, Jordi (Phantoms Foundation, 2023)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      A macroporous silicon (MPS) membrane of 210 µm thickness was functionalized and evaluated for hydrogen production by steam reforming of various fuels. Performance is comparable to conventional reactors, but in a much ...
    • High-density capacitor devices based on macroporous silicon and metal electroplating 

      Vega, Didac; Reina Marsinyach, Jordi; Pavón Urbano, Ramón; Rodríguez Martínez, Ángel (2014-01)
      Article
      Accés restringit per política de l'editorial
      This paper presents a novel technique for the fabrication of ultrahigh capacitance structures based on macroporous silicon. Electrochemical etching is used to create a 3-D template in silicon. These structures reach high ...
    • Immunosensor impedimetrico para la detección de pesticidas 

      Valera Cano, Enrique Andrés; Ramón-Azcón, Javier; Sánchez Baeza, Francisco J.; Marco Colas, María Pilar; Rodríguez Martínez, Ángel (2008)
      Text en actes de congrés
      Accés obert
      En este trabajo describimos un immunosensor impedimétrico para la detección de pesticidas. Para demostrar dicho sensor hemos utilizado atrazina, como pesticida de test. Este sensor está basado en el uso de μ-electrodos ...
    • Immunosensors based on interdigitated electrodes for the detection and quantification of pesticides in food 

      Valera Cano, Enrique Andrés; Rodríguez Martínez, Ángel (Intech, 2011-12)
      Capítol de llibre
      Accés restringit per política de l'editorial
    • Immunosensors for atrazine detection in red wine samples 

      Valera Cano, Enrique Andrés; Rodríguez Martínez, Ángel; Azcón, J.R.; Sánchez Baeza, Francisco J.; Marco Colas, María Pilar (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Two novel immunosensors, one impedimetric and other one conductimetric, for atrazine detection in red wine samples have been developed. Impedimetric immunosensor is based on an array of interdigitated μ- electrodes (IDμEs) ...
    • Immunosensors: concepts and structures for fast and accurate sensing 

      Rodríguez Martínez, Ángel; Valera Cano, Enrique Andrés (InTech - Open science/Open minds, 2013-05)
      Capítol de llibre
      Accés obert
    • 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)
      Text en actes de congrés
      Accés obert
      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 design of all-optica half subtractor based 2 - dimensional photonic crystal 

      Yoosefi, Oraman; Rodríguez Martínez, Ángel; Azimi, Nemat (International Journal of Advance Engineering and Research Development (IJAERD), 2019-03-01)
      Article
      Accés obert
      Abstract- Forthcoming Optical computers and Optical Signal Processors need all-optical devices in order to get rid of from Optical-Electrical-Optical conversions; Optical gates play a vital role in Optical networks. Photonic ...