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  • Grup de Recerca en Micro i Nanotecnologies (MNT)

     Alcubilla Gonzalez, Ramon; Puigdollers Gonzalez, Joaquin; Voz Sanchez, Cristobal; Rodriguez Martinez, Angel; Martin Garcia, Isidro; Bardes Llorensi, Daniel; Bermejo Broto, Alexandra; Calderer Cardona, Josep; Dominguez Pumar, Manuel M.; Prat Viñas, Luis; Garcies Salva, Pau; Jimenez Serres, Vicente; Lopez Gonzalez, Juan Miguel; Orpella Garcia, Alberto; Ortega Villasclaras, Pablo Rafael; Pons Nin, Joan; Silvestre Berges, Santiago; Garin Escriva, Moises; Colina Brito, Monica Alejandra; Morales Vilches, Ana Belen; Coll Valenti, Arnau; Lopez Rodriguez, Gema; Castañer Muñoz, Luis Maria
    Competitive project

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  • Emisores térmicos selectivos y filtros ópticos basados en cristales fotónicos para la detección de gases

     Bardes Llorensi, Daniel; Garcies Salva, Pau; Calderer Cardona, Josep; Todorov Trifonov, Trifon; Rodriguez Martinez, Angel
    Competitive project

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  • Silicio macroporoso: aplicaciones

     Rodriguez Martinez, Angel; Vega, Didac
    Workshop en Microsistemas y Nanotecnología y Asamblea Anual de IBERNAM
    p. 31-33
    Presentation's date: 2013-11-22
    Presentation of work at congresses

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    El silicio macroporoso es un material que ha sido y sigue siendo objeto de intenso estudio durante los últimos años. Se trata de un material nuevo, con una variedad de interesantes propiedades estructurales, mecánicas, térmicas, eléctricas, etc. Estas propiedades permiten el desarrollo de nuevas estructuras, dispositivos y aplicaciones. A medida que mejoran las técnicas de preparación, se van obteniendo propiedades que posibilitan funcionalidades previstas hace tiempo, así como otras nuevas. En este artículo se hace un repaso de aplicaciones que el silicio macroporoso tiene en la actualidad, entre ellas, en diversos tipos de sensores.

  • Condensador de silicio macroporoso de baja resisténcia serie

     Rodriguez Martinez, Angel; Vega Bru, Didac; Reina Marsinyach, Jordi; Pavón Urbano, Ramón
    Date of request: 2013-05-03
    Invention patent

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    La presente solicitud de Patente de Invención consiste conforme indica su enunciado, en un "condensador de silicio macroporoso de baja resistencia serie", cuyas nuevas características de construcción conformación y diseño le confieren alta relación capacidad/superficie de la muestra a la vez que mejora la respuesta frecuencial respecto a dispositivos anteriores.

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    Immunosensors: concepts and structures for fast and accurate sensing  Open access

     Rodriguez Martinez, Angel; Valera Cano, Enrique Andres
    DOI: 10.5772/55969
    Date of publication: 2013-05
    Book chapter

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  • Macroporous silicon microreactor for the preferential oxidation of CO

     Divins, N.J.; López, E.; Llorca, J.; Vega, Didac; Rodriguez Martinez, Angel; Gonzàlez de Rivera, Ferran; Angurell Purroy, Inmaculada; Seco, m.; Rossell Alfonso, Josep Oriol
    Spanish Conference on Electron Devices
    p. 1-4
    DOI: 10.1109/CDE.2013.6481362
    Presentation's date: 2013-02-13
    Presentation of work at congresses

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    A macroporous silicon micromonolith containing ca. 40,000 regular channels of 3.3 µm in diameter per square millimeter has been successfully functionalized with an Au/TiO2 catalyst for CO preferential oxidation (CO-PrOx) in the presence of hydrogen. The functionalization of the silicon microchannels has been accomplished by growing a SiO2 layer on the channel walls, followed by exchange with a titanium alkoxyde precursor and decomposition into TiO2 and, finally, by anchoring carbosilanethiol dendron protected pre-formed Au nanoparticles. Catalytically active centers at the Au-TiO2 interface have been obtained by thermal activation. With this method, an excellent homogeneity and adherence of the catalytic layer over the microchannels of the macroporous silicon micromonolith has been obtained, which has been tested for CO-PrOx at 363-433 K and ¿=2 under H2/CO=0-20 (molar). The macroporous silicon micromonolith converts ca. 3 NmL of CO per minute and mL of micro reactor at 433 K under H2/CO=20, suggesting that it could be particularly effective for hydrogen purification in low-temperature microfuel cells for portable applications.

    A macroporous silicon micromonolith containing ca. 40,000 regular channels of 3.3 μm in diameter per square millimeter has been successfully functionalized with an Au/TiO2 catalyst for CO preferential oxidation (CO-PrOx) in the presence of hydrogen. The functionalization of the silicon microchannels has been accomplished by growing a SiO2 layer on the channel walls, followed by exchange with a titanium alkoxyde precursor and decomposition into TiO2 and, finally, by anchoring carbosilanethiol dendron protected pre-formed Au nanoparticles. Catalytically active centers at the Au-TiO2 interface have been obtained by thermal activation. With this method, an excellent homogeneity and adherence of the catalytic layer over the microchannels of the macroporous silicon micromonolith has been obtained, which has been tested for CO-PrOx at 363-433 K and λ=2 under H2/CO=0-20 (molar). The macroporous silicon micromonolith converts ca. 3 NmL of CO per minute and mL of micro reactor at 433 K under H2/CO=20, suggesting that it could be particularly effective for hydrogen purification in low-temperature microfuel cells for portable applications.

  • Macroporous silicon FET transistors for power applications

     Vega, Didac; Najar Molina, Raúl; Pina, Maria; Rodriguez Martinez, Angel
    Spanish Conference on Electron Devices
    p. 91-94
    DOI: 10.1109/CDE.2013.6481350
    Presentation's date: 2013-02
    Presentation of work at congresses

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    In this paper we propose the use of macroporous silicon for microelectronic devices. We propose and study four different FET transistor structures using macroporous silicon as base material. Macroporous silicon is a novel material whose application most commonly suggested is as photonic crystals. Nevertheless, this is a versatile structured material with applications in many different areas, though microelectronics is not usually cited. We suggest its use for electronics devices as a FET transistor. The presented structures are studied by simulation in device modelling software (TCAD). Two kinds of operation modes have been considered: vertical (axial) and horizontal (transverse) in relation to the etched pores in silicon. One of the notable features of the described structures is the ability to have a massive number of identical unitary-cell transistor devices operating in parallel, having an all-around gate.

    In this paper we propose the use of macroporous silicon for microelectronic devices. We propose and study four different FET transistor structures using macroporous silicon as base material. Macroporous silicon is a novel material whose application most commonly suggested is as photonic crystals. Nevertheless, this is a versatile structured material with applications in many different areas, though microelectronics is not usually cited. We suggest its use for electronics devices as a FET transistor. The presented structures are studied by simulation in device modelling software (TCAD). Two kinds of operation modes have been considered: vertical (axial) and horizontal (transverse) in relation to the etched pores in silicon. One of the notable features of the described structures is the ability to have a massive number of identical unitary-cell transistor devices operating in parallel, having an all-around gate. These features allow driving the gate with low controlling voltages while handling large current density. Furthermore, the external device volume remains small thanks to the very large area-to-volume ratio. Thanks to the considerable amount of active area achievable, we further propose the use of such devices for low-voltage power applications. In this paper we present the obtained results of our simulations of the proposed devices.

  • Macroporous silicon photonic crystals for gas sensing

     Vega, Didac; Reina, Jordi; Rodriguez Martinez, Angel
    Spanish Conference on Electron Devices
    p. 143-146
    DOI: 10.1109/CDE.2013.6481363
    Presentation's date: 2013-02
    Presentation of work at congresses

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    In this paper we study a compact gas sensor based on a photonic crystal built from macroporous silicon. Its sensing mechanism is based in the absorption of infrared light by a gas. Photonic crystals are structured materials which can be engineered to have photonic bandgaps. They also can be tailored to create localized states inside the bandgaps. We exploit the possibility to confine light inside a cavity with very high-Q, which allows for long interaction time between the gas and light. Simulation of different 2-D and 3-D structures have been done to extract the appropriate dimensions for gas detection, and their optical behaviour. Resonant cavities were created by adding defects in the ordered geometrical structure, thus creating a single state and confining the trapped light in a crystal bandgap. The structures were tested by simulating the presence of ethanol inside the structures.

  • Microsystem based in macroporous silicon for the preferential oxidation of CO

     Divins, N.J.; Moreno, Cesar; López, E.; Vega, Didac; Rodriguez Martinez, Angel; Gonzàlez de Rivera, Ferran; Angurell, Inmaculada; Seco, M; Rosell, O
    Journées Franco-Espagnoles
    p. 13-1-13-2
    Presentation's date: 2012-11-22
    Presentation of work at congresses

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  • Immunosensors based on interdigitated electrodes for the detection and quantification of pesticides in food

     Valera Cano, Enrique Andres; Rodriguez Martinez, Angel
    Date of publication: 2011-12
    Book chapter

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  • Fast and accurate immunosensors based on interdigitated electrodes

     Rodriguez Martinez, Angel
    China Medicina Biotech Forum
    p. 99
    Presentation's date: 2011-11-07
    Presentation of work at congresses

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  • Optical properties of Al2O3 and TiO2 coated 3D macroporous silicon photonic crystals

     Todorov Trifonov, Trifon; Hernández García, David; Garin Escriva, Moises; Vega Bru, Didac; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon
    Spanish Conference on Electron Devices
    p. 47-48
    Presentation's date: 2011-02-10
    Presentation of work at congresses

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  • Blackbody behaviour from spiked macroporous silicon photonic crystals

     Vega Bru, Didac; Todorov Trifonov, Trifon; Hernández García, David; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon
    Spanish Conference on Electron Devices
    p. 257-258
    DOI: 978-1-4244-7864-4
    Presentation's date: 2011-02-08
    Presentation of work at congresses

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    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) Photonic Crystal (PhC). This “black face” is formed by silicon spikes ending in a sharp tip, of high aspect radio. Measures reveal that this face is nearly a perfect absorber at MIR wavelenghs

  • Negative refraction Index in 3D macroporous silicon photonic crystals

     Vega Bru, Didac; Todorov Trifonov, Trifon; Hernández García, David; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon
    Spanish Conference on Electron Devices
    p. 83-84
    DOI: 978-1-4244-7864-4
    Presentation's date: 2011-02-11
    Presentation of work at congresses

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    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 Chrystal (3D-PhC) structure made from Macropourus silicon (MpSi)in which we can find a range of frenquencies that exhibit notable dispersion characteristics. One promising trait is the existence of negative refraction index, which we show in this paper.

  • MEMS Devices

     Quero, J.M.; Luque Estepa, Antonio; Castañer Muñoz, Luis Maria; Rodriguez Martinez, Angel; Ionescu, Adrian; Fernández-Bolaños, Montserrat; Faraone, Lorenzo; Dell, John M.
    Date of publication: 2011-02-01
    Book chapter

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  • Cristales fotónicos y manipulación de nanopartículas enfocados a su aplicación como sensores en el infrarojo

     Bermejo Broto, Alexandra; Bardes Llorensi, Daniel; Lopez Gonzalez, Juan Miguel; Vega, Didac; Hernández García, David; Di Virgilio, Vito; Rodriguez Martinez, Angel
    Competitive project

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  • A million-channel fuel processor on a fingertip

     López, E.; Irigoyen, A.; Rodriguez Martinez, Angel; Jiménez, N.; Todorov Trifonov, Trifon; Llorca Pique, Jordi
    International Conference on Microreactor Technology
    p. 3473-3479
    DOI: 10.1016/j.ijhydene.2010.01.146
    Presentation of work at congresses

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    Tuning the emissivity of 3D macroporous silicon in the mid-infrared  Open access

     Hernández García, David; Vega Bru, Didac; Garin Escriva, Moises; Todorov Trifonov, Trifon; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon
    Encuentro Franco-Español de Química y Física del Estado Sólido
    p. 33-34
    Presentation's date: 2010-03-17
    Presentation of work at congresses

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    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 and dielectric gratings, can be designed to introduce sharp emissions peaks which can be controlled with the grating parameters. 3D photonic band gap materials are particularly flexible in managing and confining light and, therefore, they are excellent candidates for controlling thermal radiation. Macroporous silicon, consisting of periodic arrays of etched pores in hydrofluoric acid solution, is a versatile material that provides large-area, high-quality and thermally-stable microstructures. It features full three-dimensionality, well controlled pore distribution and growth, and scalable dimensions in a range from 0.5 μm up to 100 μm. Silicon 3D structures operate at infrared wavelengths, efficiently reducing the emissivity inside the PBG regions. We present several Si microstructures and their emissivity/reflectivity responses measured by FT-IR spectrometry.

  • Macroporous silicon : a next generation catalytic monolith for ethanol steam reforming

     Vega, Didac; Todorov Trifonov, Trifon; Hernández García, David; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon; Jiménez, Nuria; Llorca Pique, Jordi; López, E.
    International conference on Porous Semiconductors Science and Technology
    p. 383-384
    Presentation's date: 2010-03
    Presentation of work at congresses

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    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 inner walls of the pores were coated with Co3O3*ZnO catalyst film. The as-prepared reactors were fed with water-ethanol gas mixture and the effect of the reactor temperature and inlet flow rate on the H2 generation was studied. We observed a superior H2 generation efficiency in comparison with conventional microreactors.

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    Catalytic membrane reactors based on macroporous silicon for hydrogen production  Open access

     Vega Bru, Didac; Hernández, D.; Jiménez, N.; Todorov Trifonov, Trifon; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon; Llorca, J.; López, E.
    Encuentro Franco-Español de Química y Física del Estado Sólido
    p. 104-105
    Presentation's date: 2010-03-17
    Presentation of work at congresses

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    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 storage and manipulation is however a problematic and hazardous issue. Therefore, the low temperature on-site steam reforming of alcohols for hydrogen supply offers a nice solution to safety and storage issues, while providing several environment advantages […]

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    Template fabrication of 3D metallic microstructures by electrochemical etching and electroplanting  Open access

     Hernández García, David; Todorov Trifonov, Trifon; Lange, Diego; Garin Escriva, Moises; Garcia Molina, Miguel; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon
    Encuentro Franco-Español de Química y Física del Estado Sólido
    p. 1-2
    Presentation of work at congresses

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    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 geometries bulk. In addition macroporous silicon features full three-dimensionality, well controlled pore distribution and growth, and scalable dimensions (0.5-100 μm). We present here the fabrication of 3D Ni micro-structures by electroplating of macroporous silicon templates. The given approach can be applied for depositions of different metals and in more complicated template-structures.

  • CO removal at the nanoscale: A 1-cent gold prox reactor

     Jiménez, NURIA; López, E; Todorov Trifonov, Trifon; Rodriguez Martinez, Angel; González de Rivera, G.; Rodríguez, L.I.; Rodríguez, M; Seco, M; Rosell, O; Llorca Pique, Jordi
    International Conference on Chemical Reactors
    Presentation of work at congresses

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  • DESARROLLO DE MICROREACTORES INTEGRADOS

     Rodriguez Martinez, Angel
    Competitive project

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

     Hernández García, David; Lange, Diego; Todorov Trifonov, Trifon; Garin Escriva, Moises; Garcia Molina, Francisco Miguel; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon
    Micro Nano Engineering
    p. 273-281
    DOI: 10.1016/j.mee.2009.11.108
    Presentation's date: 2009-09
    Presentation of work at congresses

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  • Functionalized Silicon-based Proton Exchange Membranes for Monolithic Microf Fuel Cells

     Rodriguez Martinez, Angel; Torres Herrero, Nuria; Tarancón, A.; Santander, Joaquim; Sabaté, Nuria; Cané Ballart, Carles; Todorov Trifonov, Trifon; Esquivel, J.P.; Duch, Marta; Alcubilla Gonzalez, Ramon
    Iberian Symposium on Hydrogen Fuel Cells and Advanced Batteries
    p. 367-375
    Presentation's date: 2009-09
    Presentation of work at congresses

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  • A million channel reformer on a fingertip

     López, Eduardo; Irigoyen, Aitor; Todorov Trifonov, Trifon; Rodriguez Martinez, Angel; Llorca Pique, Jordi
    Europacat
    p. 1-4
    DOI: 10.1016/j.ijhydene.2010.01.146
    Presentation's date: 2009-08
    Presentation of work at congresses

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    Interdigitated u-electrodes for development of an impedimetric immunosensor for atrazine detection  Open access

     Valera Cano, Enrique Andres; Ramón-Azcón, Javier; Sanchez, F. J.; Marco, M. P.; Rodriguez Martinez, Angel; Castañer Muñoz, Luis Maria
    Spanish Conference on Electron Devices
    p. 278-280
    Presentation of work at congresses

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    This contribution describes the development of an impedimetric immunosensor for atrazine detection. This immunosensor is based on the use of interdigitated metallic μ-electrodes (IDμEs) The method described in this work does not use any redox mediator and relies on the direct detection of immunochemical competitive reaction between the pesticide and a haptenized-protein immobilized on interdigitated μ-electrodes for the specific antibody. The immunoreagents used were specifically developed to detect atrazine. The immunochemical detection of this pesticide is achieved without using any label. The immunosensor shows a limit of detection of 8.34±1.37 μg L-1, witch is lower than the Maximun Residue Level (MRL) (50μg L-1)established by EU (European Union)for residues of atrazine as herbicide in the wine grapes and other foodstuff products.

  • Immunosensors for atrazine detection in red wine samples

     Valera Cano, Enrique Andres; Rodriguez Martinez, Angel; Azcón, J.R.; Sánchez Baeza, Francisco J.; Marco Colas, María Pilar
    International Conference on Biomedical Electronics and Devices
    p. 226-230
    Presentation's date: 2009-01
    Presentation of work at congresses

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    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) and bioreagents specifically developed to detect this pesticide. Conductimetric immunosensor incorporates additionally gold nanoparticles. Bioreagents were covalently immobilized on the surface of the electrodes (interdigital space). In both cases the biochemical determination of atrazine is possible without any redox mediator. For the case of the impedimetric immunosensor, the detection method is based on impedimetric measurements (in a wide range of frequencies), whereas in the case of the conductimetric immunosensor the detection method is based on conductimetric measurements (DC measurements).The potential of the impedimetric immunosensor to analyze atrazine in complex sample matrices, such as red wine, have been evaluated. This immunosensor can detect atrazine with limits of detection in the order sub-ppb, far below the maximum residue level (MRL) (50 μg L−1) established by European Union (EU) for residues of this herbicide in the wine grapes.

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    Immunosensor impedimétrico para la detección de pesticidas  Open access

     Valera Cano, Enrique Andres; Ramón-Azcon, Javier; Sánchez Baeza, Francisco; Marco Colas, María Pilar; Rodriguez Martinez, Angel
    Congreso Español de Ingeniería de Alimentos y Congreso Iberoamericano sobre Seguridad Alimentaria (CESIA-CIBSA)
    p. 1-6
    Presentation's date: 2008-11
    Presentation of work at congresses

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    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 interdigitados así como en reactivos específicamente desarrollados para la detección de este pesticida. Los anticuerpos utilizados no incluyen ningún tipo de etiqueta. Así mismo, el sensor no incluye ningún tipo de par redox que amplifique la señal. La detección immunoquímica de atrazina se alcanza mediante una reacción competitiva entre el antígeno tapizado y el pesticida por una pequeña cantidad de anticuerpo. Los cambios en la impedancia producidos por la inclusión de los bioreactivos son interpretados utilizando un circuito equivalente, el cual representa el sistema de manera fiable. La detección se monitoriza a partir de medidas impedimétricas diferenciales en un amplio espectro de frecuencia. El immunosensor muestra límites de detección en el rango de pocos ppb's, lo cual está muy por debajo del Maximum Residue Level (MRL) (50 μg L-1) establecido por la Unión Europea para los residuos de atrazina en uvas de vino así como en otros productos alimenticios. Aunque en este trabajo el immunosensor se ha demostrado para la atrazina, otros pesticidas podrían detectarse mediante este método siempre que se utilicen los reactivos adecuados.

    Postprint (author’s final draft)

  • Electrical transport and impedance analysis of Au/porous silicon thin films

     Fonthal, Faruk; Goyes, C; Rodriguez Martinez, Angel
    Electronics, Robotics and Automotive Mechanics Conference
    p. 3-7
    DOI: 10.1109/CERMA.2008.62
    Presentation's date: 2008-10
    Presentation of work at congresses

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    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 silicon (p-Si) <100> substrates. The beginning is obtaining good electrical contacts on porous layer; for this reason, several Au/PS/Au junctions were electrically characterized to understand the transport mechanisms in porous surface and the temperature dependence in the porous properties studied, also the resistance-temperature characteristic of PS/p-Si thermistor device. Finally, we obtained the AC conductivity in modulo and phase; an electrical equivalent circuit was proposed to fit the experimental frequency response of the different sample

  • Immunosensors based on Interdigitated µ-Electrodes: Application to Pesticide Detection

     Valera Cano, Enrique Andres
    Department of Electronic Engineering, Universitat Politècnica de Catalunya
    Theses

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  • Antireflective macroporous silicon layers on crystalline silicon

     Rodriguez Martinez, Angel; Fonthal, Faruk; Torres, I.; Goyes, C.; Pallarès Marzal, Josep
    E-MRS Spring Meeting
    p. 139-146
    DOI: 10.1007/s10854-010-0232-6
    Presentation's date: 2008-05
    Presentation of work at congresses

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  • Effects of periodicity and shape on the optical and thermal emission properties of 3D macroporous silicon

     Rodriguez Martinez, Angel; Todorov Trifonov, Trifon; Garin Escriva, Moises; Alcubilla Gonzalez, Ramon
    International Conference on Porous Semiconductors Science and Technology PSST
    p. 238-239
    Presentation's date: 2008-03
    Presentation of work at congresses

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  • An Impedimetric Immunosensor based on Interdigitated Microelectrodes (IDµE) for the Determination of Pesticide Residues in Food Samples

     Barranco, A; Ramón-Azcón, J; Valera, E; Rodriguez Martinez, Angel; Alfaro, B; Marco, M P; Sanchez-Baeza, F; Castañer Muñoz, Luis Maria
    BIOSENSORS 2008
    p. 1
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  • Manipulación de micro-nano partículas en 2D y 3D

     Silvestre Berges, Santiago; Castañer Muñoz, Luis Maria; Rodriguez Martinez, Angel; Bermejo Broto, Alexandra; Bardes Llorensi, Daniel; Lopez Gonzalez, Juan Miguel
    Competitive project

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  • Reflection Analysis of 2D-photonic Crystal Lattice Using Bragg-diffraction phenomena

     Král, Z; Ferré-Borrull, J; Marsal, L F; Pallarès Marzal, Josep; Todorov Trifonov, Trifon; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon
    Spanish Conference on Electron Devices
    p. 293-295
    Presentation of work at congresses

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  • High frequency response of a novel biosensor based on interdigitated u-electrodes (IDuE's)

     Valera, E; Ramón-Azcón, J; Sanchez, F J; Castañer Muñoz, Luis Maria; Marco, P; Rodriguez Martinez, Angel
    Spanish Conference on Electron Devices
    p. 193-196
    Presentation of work at congresses

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  • An Impedimetric Immunosensor based on Interdigitated Microelectrodes (IDµE) for the Determination of Pesticide Residues in Food Samples

     Ramón-Azcón, J; Valera, E; Rodriguez Martinez, Angel; Barranco, A; Alfaro, B; Marco, M P; Sanchez-Baeza, F
    BaezaaTrans-Pyrenees meeting on Micro and Nanosystems 2007
    p. 1
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  • u-Porous Silicon (uPS) gas sensor based on interdigitated u-electrodes (IDuE's)

     Valera, E; Casals, O; Vetter, M; Rodriguez Martinez, Angel
    Spanish Conference on Electron Devices
    p. 197-200
    Presentation of work at congresses

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  • Crystal growth by liquid-phase epitaxy of nonlinear optical 2D and 3D KTiOPO4 photonic structures within a Si macroporous membrane

     Carvajal, J J; Peña, A; Trifonov, T; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon; Pallarès Marzal, Josep; Marsal, L F; Martorell, J; Aguiló, M; Díaz, F
    The 15th International Conference on Crystal Growth
    p. 1
    Presentation of work at congresses

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  • Optical properties of 3D macroporous silicon structures

     Garin Escriva, Moises; Todorov Trifonov, Trifon; Rodriguez Martinez, Angel; Marsal, L F; Alcubilla Gonzalez, Ramon
    E-MRS 2007 Spring Meeting
    Presentation of work at congresses

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  • Reflectivity study of the electromagnetic-wave dispersion relation in two-dimensional macroporous silicon photonic crystals

     Kral, Z; Ferre-Borrull, J; Trifonov, T; Marsal, L F; Rodriguez Martinez, Angel; Pallares, J; Alcubilla Gonzalez, Ramon
    E-MRS 2007 Spring Meeting
    p. 1
    Presentation of work at congresses

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  • Patterning of MIR thermal emission by 3D macroporous silicon

     Garin, M; Trifonov, T; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon
    THERMAL RADIATION AT THE NANOSCALE: FORCES, HEAT TRANSFER, COHERENCE
    p. 1
    Presentation of work at congresses

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  • Ordered arrays of polymer microfibers obtained using macroporous silicon as template

     Marsal, L F; Formentin, P; Palacios, R; Trifonov, T; Ferré-Borrull, J; Rodriguez Martinez, Angel; Pallarés, J; Alcubilla Gonzalez, Ramon
    Trends in Nanotechnology TNT2007
    p. 1
    Presentation of work at congresses

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  • FTIR Characterization of Photonic Bands in 2D Silicon Photonic Crystals

     Kral, Z; Ferre-Borrull, J; Trifonov, T; Marsal, L F; Rodriguez Martinez, Angel; Pallares, J; Alcubilla Gonzalez, Ramon
    E-MRS 2007 Spring Meeting
    p. 1
    Presentation of work at congresses

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  • Fabrication and Characterization of Porous Silicon on crystalline Silicon based devices

     Fonthal, F; Trifonov, T; Rodriguez Martinez, Angel; Goyes, C; Vilanova, X; Pallares, J
    Electronics, Robotics and Automotive Mechanics Conference
    p. 170-174
    Presentation of work at congresses

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  • Post-etching shaping of macroporous silicon

     Todorov Trifonov, Trifon; Garin Escriva, Moises; Ortega Villasclaras, Pablo Rafael; Marsal, L F; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon
    SPIE Europe MICROTECHNOLOGIES FOR THE NEW MILLENNIUM 2007
    p. 51
    Presentation of work at congresses

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  • Towards more complex shapes of macroporous silicon

     Todorov Trifonov, Trifon; Garin Escriva, Moises; Rodriguez Martinez, Angel; Marsal, L F; Pallarès Marzal, Josep; Alcubilla Gonzalez, Ramon
    Spanish Conference on Electron Devices
    p. 9-12
    Presentation of work at congresses

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  • AC Impedance analysis of Au/porous silicon contacts

     Fonthal, F; Trifonov, T; Rodriguez Martinez, Angel; Pallarès, Marsal L F J
    MAM 2006
    p. 13
    Presentation of work at congresses

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