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  • A Ku-band RF-MEMS frequency-reconfigurable multimodal bandpass filter

     Contreras Lizarraga, Adrian Arturo; Casals Terre, Jasmina; Pradell Cara, Lluis; Giacomozi, Flavio; Iannacci, Jacopo; Ribó i Pal, Miquel
    International journal of microwave and wireless technologies
    Vol. 6, num. 3-4, p. 277-285
    DOI: 10.1017/S1759078714000567
    Date of publication: 2014
    Journal article

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    In this paper, a uniplanar RF-MEMS second-order bandpass filter with reconfigurable center frequency is presented. It is based on quarter-wavelength slotline resonators and coplanar waveguide (CPW)-to-slotline multimodal immitance inverters (MIIs), which are reconfigured using RF-MEMS switchable CPW air-bridges (SABs). The filter can be adequately explained and designed using multimodal theory and circuit models. A surface micromachining process on high-resistivity silicon substrate was used to fabricate the filter. Experimental results show frequency reconfiguration from 12 to 13 GHz, maintaining the same relative bandwidth, and insertion losses of 4.6 and 4.7 dB, respectively.

  • Las promesas de la nanotecnología

     Sureda Anfres, Miquel; Casals Terre, Jasmina
    Automática e instrumentación
    num. 458, p. 34-38
    Date of publication: 2014-01
    Journal article

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    No cabe duda de que el camino que nos depara la nanotecnología es muy prometedor. Ropa de repelerá el agua, ordenadores quánticos, píldoras inteligentes o teléfonos móviles cargados con el calor humano. Todos estos desarrollos son el futuro de una revolución que empezó con un sueño: reducir los dispositivos hasta chocar con la escala del átomo. Pero no podemos olvidar que, en la gran mayoría de los campos indicados, faltan por comprender aspectos importantes, como la física básica de muchos fenómenos, o la repetitividad y la durabilidad de los procesos.

    No cabe duda de que el camino que nos depara la nanotecnología es muy prometedor. Ropa de repelerá el agua, ordenadores quánticos, píldoras inteligentes o teléfonos móviles cargados con el calor humano. Todos estos desarrollos son el futuro de una revolución que empezó con un sueño: reducir los dispositivos hasta chocar con la escala del átomo. Pero no podemos olvidar que, en la gran mayoría de los campos indicados, faltan por comprender aspectos importantes, como la física básica de muchos fenómenos, o la repetitividad y la durabilidad de los procesos.

  • Los aerogeneradores del futuro se beneficiarán de la nanotecnología

     Farré Lladós, Josep; Casals Terre, Jasmina
    Automática e instrumentación
    num. 458, p. 41-42
    Date of publication: 2014-01
    Journal article

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    El impacto que la micro y la nanotecnología tendré en nuestras vidas debe ir en todo momento acompañado de un desarrollo sostenible de las fuentes de energía. La mejora de la producción de la energía eólica es un primer paso en esta dirección. Técnicas como la impresión 3D de alta resolución ponen a disposición de los equipos de diseño herramientas para desarrollar la nueva generación de aerogeneradores.

    El impacto que la micro y la nanotecnología tendré en nuestras vidas debe ir en todo momento acompañado de un desarrollo sostenible de las fuentes de energía. La mejora de la producción de la energía eólica es un primer paso en esta dirección. Técnicas como la impresión 3D de alta resolución ponen a disposición de los equipos de diseño herramientas para desarrollar la nueva generación de aerogeneradores.

  • High-throughput microcapillary pump with efficient integrated low aspect ratio micropillars

     Madadi, Hojjat; Casals Terre, Jasmina; Castilla Lopez, Roberto; Sureda Anfres, Miquel
    Microfluidics and nanofluidics
    Vol. 17, num. 1, p. 115-130
    DOI: 10.1007/s10404-013-1295-5
    Date of publication: 2014-07-01
    Journal article

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    Prediction and reduction of pressure drop and resistance flow in micropillar arrays are important for the design of microfluidic circuits used in different lab-on-a-chip and biomedical applications. In this work, a diamond microchannel-integrated micropillar pump (dMIMP) with a resistance flow 35.5 % lower than a circular-based micropillar pump (cMIMP) has been developed via the optimization of the fluid dynamic behavior of different pillar shapes in a low aspect ratio (H/D ranged from 0.06 to 0.2) integrated pillar microchannel. The effect of different geometrical parameters (such as pillar shape and its distribution) has been considered to minimize the microchannel resistance flow. Six-micrometer-depth polidimetilsiloxane (PDMS) channels have been fabricated using a modified soft lithography process, which prevents the PDMS deformation under high-pressure operation. Flow through the fabricated samples has been numerically solved and experimentally measured, with an agreement higher than 90 %. The results have been used to validate the derived analytical formulation to determine the flow resistance in this type of channels, a fast approach to obtain the resistance flow in the design stage of microdevices. The analysis of the results indicates that, although porosity can be a determinant parameter to predict the resistance flow of MIMP, other geometrical parameters such as side distance between pillars and pillar shape play a major role in this scenario. Finally, a high-throughput optimized diamond MIMP pump has been designed, tested and validated as a capillary pump, showing that it can provide a flow rate 73 % higher than a circular MIMP pump.

    Prediction and reduction of pressure drop and resistance flow in micropillar arrays are important for the design of microfluidic circuits used in different lab-on-a-chip and biomedical applications. In this work, a diamond microchannel-integrated micropillar pump (dMIMP) with a resistance flow 35.5 % lower than a circular-based micropillar pump (cMIMP) has been developed via the optimization of the fluid dynamic behavior of different pillar shapes in a low aspect ratio (H/D ranged from 0.06 to 0.2) integrated pillar microchannel. The effect of different geometrical parameters (such as pillar shape and its distribution) has been considered to minimize the microchannel resistance flow. Six-micrometer-depth polidimetilsiloxane (PDMS) channels have been fabricated using a modified soft lithography process, which prevents the PDMS deformation under high-pressure operation. Flow through the fabricated samples has been numerically solved and experimentally measured, with an agreement higher than 90 %. The results have been used to validate the derived analytical formulation to determine the flow resistance in this type of channels, a fast approach to obtain the resistance flow in the design stage of microdevices. The analysis of the results indicates that, although porosity can be a determinant parameter to predict the resistance flow of MIMP, other geometrical parameters such as side distance between pillars and pillar shape play a major role in this scenario. Finally, a high-throughput optimized diamond MIMP pump has been designed, tested and validated as a capillary pump, showing that it can provide a flow rate 73 % higher than a circular MIMP pump.

  • Biomodificación de papeles para la construcción de dispositivos microfluidicos

     Torres Lopez, Antonio Luis; Casals Terre, Jasmina; Vidal Llucia, Teresa
    Competitive project

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  • Analysis and design of a capillary driven blood plasma separation microfluidic device

     Madadi, Hojjat
    Universitat Politècnica de Catalunya
    Theses

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    Recientemente, la aparición de dispositivos de laboratorio en un chip (Lab on a chip) ha generado una gran variedad de nuevas aplicaciones especialmente en análisis clínicos y diagnóstico. En particular, la falta de micro dispositivos adecuados para la separación del plasma de la sangre es una barrera para lograr un dispositivo portátil que pueda realizar una análisis de sangre. Con el fin de abordar esta cuestión, un microsistema auto impulsado que pueda obtener una cantidad importante de plasma sanguíneo de una gota de sangre seria un primer paso para un análisis de sangre miniaturizado. En esta tesis se utiliza PDMS (Polydimethylsiloxane ) como material de base para la fabricación del microdispositivo debido a su biocompatibilidad y su bajo coste. Uno de los rasgos característicos del dispositivo presentado es que trabaja solo con presión capilar que elimina la necesidad de fuentes externas. La presión capilar solicitada para conducir sangre a través del microdispositivo se obtiene mediante la modificación del PDMS mediante diferentes agentes tensioactivos, que se mezclan con PDMS pre - curado para lograr un carácter hidrófilo estable. El proceso de filtración se basará en una estructura de columnas con baja relación de aspecto. Estás estructuras se han analizado numéricamente, analíticamente y experimentalmente, para obtener un diseño con baja resistencia al flujo. En concreto, se ha diseñado un conjunto de microcolumnas base diamante ( dMIMP ) que se utilizará como bomba de alto rendimiento y baja resistencia al flujo (35.5 % menor que una bomba microcolumnas circulares ( cMIMP )). Para realizar esta caracterización se ha desarrollado un sistema de fabricación que permita caracterizar las estructruas de PDMS, a alta presión sin que se deformen. Por último, se ha utilizado el PDMS modificado y la bomba capilar optimizada para realizar un diseño de microfiltro de plasma sanguíneo de alto rendimiento. El microdispositivo presentado puede separar más de 0.11microL de plasma de una gota de sangre fresca humana ( 5microL ) sin la necesidad de fuerzas externas con una alta eficiencia ( más del 90 % ) y un tiempo razonable (de 3 a 5 minutos ). El volumen de plasma obtenido es suficiente para implementar diferentes tipos de test sanguíneo y por tant representa el primer paso hacia la creación de un punto de atención portàtil (POC, point of care).

  • K-band RF-MEMS uniplanar reconfigurable-bandwidth bandpass filter using multimodal immittance inverters

     Contreras Lizarraga, Adrian Arturo; Ribó i Pal, Miquel; Pradell Cara, Lluis; Casals Terre, Jasmina; Giacomozzi, Flavio; Iannacci, Jacopo
    Electronics Letters
    Vol. 49, num. 11, p. 704-706
    DOI: 10.1049/el.2013.0681
    Date of publication: 2013-05-23
    Journal article

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  • A novel fabrication technique to minimize poly(dimethylsiloxane)-microchannels deformation under high-pressure operation

     Madadi, Hojjat; Mohammadi, Mahdi; Casals Terre, Jasmina; Castilla Lopez, Roberto
    Electrophoresis
    DOI: 10.1002/elps.201300340
    Date of publication: 2013-10-27
    Journal article

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    PDMS is one of the most common materials used for the flow delivery in the microfluidics chips, since it is clear, inert, nontoxic, and nonflammable. Its inexpensiveness, straightforward fabrication, and biological compatibility have made it a favorite material in the exploratory stages of the bio-microfluidic devices. If small footprint assays want to be performed while keeping the throughput, high pressure-rated channels should be used, but PDMS flexibility causes an important issue since it can generate a large variation of microchannel geometry. In this work, a novel fabrication technique based on the prevention of PDMS deformation is developed. A photo-sensible thiolene resin (Norland Optical Adhesive 63, NOA 63) is used to create a rigid coating layer over the stiff PDMS micropillar array, which significantly reduces the pressure-induced shape changes. This method uses the exact same soft lithography manufacturing equipment. The verification of the presented technique was investigated experimentally and numerically and the manufactured samples showed a deformation 70% lower than PDMS conventional samples.

    PDMS is one of the most common materials used for the flow delivery in the microfluidics chips, since it is clear, inert, nontoxic, and nonflammable. Its inexpensiveness, straightforward fabrication, and biological compatibility have made it a favorite material in the exploratory stages of the bio-microfluidic devices. If small footprint assays want to be performed while keeping the throughput, high pressure-rated channels should be used, but PDMS flexibility causes an important issue since it can generate a large variation of microchannel geometry. In this work, a novel fabrication technique based on the prevention of PDMS deformation is developed. A photo-sensible thiolene resin (Norland Optical Adhesive 63, NOA 63) is used to create a rigid coating layer over the stiff PDMS micropillar array, which significantly reduces the pressure-induced shape changes. This method uses the exact same soft lithography manufacturing equipment. The verification of the presented technique was investigated experimentally and numerically and the manufactured samples showed a deformation 70% lower than PDMS conventional samples.

  • Long-term behavior of nonionic surfactant-added PDMS for self-driven microchips

     Madadi, Hojjat; Casals Terre, Jasmina
    Microsystem technologies-Micro-and nanosystems-Information storage and processing
    Vol. 19, num. 1, p. 143-150
    DOI: 10.1007/s00542-012-1641-7
    Date of publication: 2013-01
    Journal article

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  • Premi Valortec

     Casals Terre, Jasmina
    Award or recognition

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  • Q-00033

     Casals Terre, Jasmina
    Competitive project

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  • Reconfigurable multimodal bandpass filter based on RF-MEMS switchable CPW air-bridges

     Contreras Bleda, Adrián; Casals Terre, Jasmina; Pradell Cara, Lluis; Giacomozi, Flavio; Iannacci, Jacopo; Ribó i Pal, Miquel
    European Microwave Week
    p. 328-331
    DOI: 978-2-87487-032-3
    Presentation's date: 2013-10-08
    Presentation of work at congresses

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    In this paper, a uniplanar RF-MEMS secondorder bandpass filter with reconfigurable centre frequency is presented. It is based on quarter-wavelength slotline resonators and CPW-slotline multimodal immittance inverters (MIIs), which are reconfigured using RF-MEMS switchable CPW airbridges (SABs). The filter can be adequately explained and designed using multimodal theory and circuit models. A surface micromachining process on high-resistivity silicon substrate was used to fabricate the filter. Experimental results show frequency reconfigurability from 12 GHz to 13 GHz, maintaining the same relative bandwidth, and insertion losses of 4.6 dB and 4.7 dB respectively.

  • Reconfigurable uniplanar bandpass filter based on RF-MEMS switched capacitors

     Contreras Lizarraga, Adrián Arturo; Pradell Cara, Lluis; Casals Terre, Jasmina; Giacomozzi, Flavio; Iannacci, Jacopo; Ribó i Pal, Miquel
    International Symposium on RF MEMS and RF Microsystems
    Presentation's date: 2013-07-02
    Presentation of work at congresses

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    In this paper, an uniplanar RF-MEMS second-order bandpass filter with reconfigurable centre frequency is presented. It is based on half-wavelength slotline resonators, which are loaded using RF-MEMS switches connected to MIM capacitors. Experimental results show frequency reconfigurability from 15 GHz down to 10 GHz

    In this paper a reconfigurable bandpass filter is designed using ohmic-contact cantilever-type Micro Electro Mechanical Systems (MEMS) switches., Tthe filter can switch between two different states with a center frequency tunable range of 13 % in C band. The topology allows achieving two accurate center frequencies, each associated with a precisely defined bandwidth, using six MEMS ohmic-switches. The design carefully takes into account the external quality factor for both filter states to ensure a good impedance match at each frequency. Coupling coefficients and resonator lengths produce the bandwidths and center frequencies required by design specifications. The filter is designed to have center frequencies of 5.5 and 6.2 GHz, with a fractional bandwidth (FBW) of 5 and 3 %, respectively. Filter specifications were successfully met with the proposed topology. The filter was fabricated on a quartz substrate and measured responses are in good agreement with simulations

  • Ocupación y evacuación de un recinto abierto en fiestas tradicionales

     Casadesus Pursals, Salvador; Casals Terre, Jasmina
    Congreso de los Servicios de Emergencia
    Presentation's date: 2013-10-10
    Presentation of work at congresses

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    Resulta un hecho común que en fiestas tradicionales y populares se concentre un gran número de personas en recintos abiertos de dimensiones limitadas, incluso en estos casos de recintos abiertos, son frecuentes situaciones de sobreocupación que pueden comportar situaciones de riesgo en las cuales puede ser necesaria una evacuación de emergencia. Las situaciones de riesgo pueden ser debidas a actuaciones de la propia multitud o bien causadas por factores externos. En el presente trabajo se realiza el estudio de la ocupación y de la evacuación de un recinto abierto, mediante una aplicación muy simple es posible estimar la ocupación y estudiar las condiciones de evacuación del mismo en caso de situaciones de emergencia.

    Resulta un hecho común que en fiestas tradicionales y populares se concentre un gran número de personas en recintos abiertos de dimensiones limitadas, incluso en estos casos de recintos abiertos, son frecuentes situaciones de sobreocupación que pueden comportar situaciones de riesgo en las cuales puede ser necesaria una evacuación de emergencia. Las situaciones de riesgo pueden ser debidas a actuaciones de la propia multitud o bien causadas por factores externos. En el presente trabajo se realiza el estudio de la ocupación y de la evacuación de un recinto abierto, mediante una aplicación muy simple es posible estimar la ocupación y estudiar las condiciones de evacuación del mismo en caso de situaciones de emergencia.

  • High Field Electrokinetic Effect: Theoretical Analysis and Capabilities for Space Propulsion

     Sureda Anfres, Miquel
    Department of Fluid Mechanics, Universitat Politècnica de Catalunya
    Theses

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  • Access to the full text
    Conmutadores RF-MEMS de baja tensión  Open access

     Contreras Lizarraga, Adrian Arturo; Casals Terre, Jasmina; Pradell Cara, Lluis; Colpo, Sabrina; Iannacci, Jacopo; Ribó i Pal, Miquel; Giacomozzi, Flavio
    Simposium Nacional de la Unión Científica Internacional de Radio
    Presentation's date: 2012
    Presentation of work at congresses

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    This work shows experimental results of capacitive and ohmic RF-MEMS switches with low actuation voltage. The isolation of capacitive switches is better than 20 dB from 15 GHz and up to 80 GHz according to simulations. The ohmic-contact switch can be used in coplanar waveguide (CPW) reconfigurable multimodal circuits, for a selective use of the CPW odd-mode. The CPW odd-mode isolation in the down state is better than 20 dB up to 8 GHz and better than 10 dB up to 30 GHz.

  • Access to the full text
    A RF-MEMS switchable CPW air-bridge  Open access

     Contreras Lizarraga, Adrián Arturo; Casals Terre, Jasmina; Pradell Cara, Lluis; Giacomozzi, Flavio; Colpo, Sabrina; Iannacci, Jacopo; Ribó i Pal, Miquel
    European Microwave Conference
    p. 441-444
    Presentation's date: 2012-10-30
    Presentation of work at congresses

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    This work presents a new shunt-Type ohmic contact RF-MEMS switch specifically designed as a switchable CPW air bridge. The switch can be used in coplanar waveguide (CPW) reconfigurable multimodal circuits, for a selective use of the CPW odd-mode. The bridge is anchored using folded-beam suspensions, in such a way that two points at each end of the bridge remain free to contact the ground planes of the CPW. The suspension has been designed to compensate stress gradients effects and to lower actuation voltage. In the actuated (ON) state, the switch isolation to the odd mode is better than 20dB up to 8GHz and 10dB up to 30GHz. 2012 European Microwave Assoc.

    This work presents a new shunt-type ohmic contact RF-MEMS switch specifically designed as a switchable CPW air bridge. The switch can be used in coplanar waveguide (CPW) reconfigurable multimodal circuits, for a selective use of the CPW odd-mode. The bridge is anchored using folded-beam suspensions, in such a way that two points at each end of the bridge remain free to contact the ground planes of the CPW. The suspension has been designed to compensate stress gradients effects and to lower actuation voltage. In the actuated (ON) state, the switch isolation to the odd mode is better than 20dB up to 8GHz and 10dB up to 30GHz.

    Postprint (author’s final draft)

  • Low voltage capacitive and Ohmic RF-MEMS Switches

     Contreras Lizarraga, Adrian Arturo; Casals Terre, Jasmina; Pradell Cara, Lluis; Giacomozzi, Flavio; Colpo, Sabrina; Iannacci, Jacopo; Ribó i Pal, Miquel
    International Symposium on RF MEMS and RF Microsystems
    Presentation's date: 2012
    Presentation of work at congresses

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    This work presents experimental results of capacitive and ohmic-contact RF-MEMS switches. The suspension has been designed to compensate stress-gradient effects, and to obtain low pull-in voltages. The measured actuation voltage is 12 V for devices with an air gap of 1.3 µm. The measured isolation of the capacitive switches is better than 20 dB for frequencies above 15 GHz, and better than 30 dB from 31 GHz up to 80 GHz according to simulations. The ohmic-contact switch can be used to control the odd mode in coplanar waveguide (CPW) reconfigurable multimodal circuits. The CPW odd-mode isolation of the ohmic-contact switch in its down state is better than 20 dB up to 8 GHz and better than 10 dB up to 30 GHz.

  • Methodology of uv-Bending of self-driven microchannels for microtas applications

     Mohammadi, Mahdi; Madadi, Hojjat; Casals Terre, Jasmina
    International Conference on Micro and Nano Engineering
    Presentation's date: 2012-09-18
    Presentation of work at congresses

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  • Study the effects of different surfactants on hydrophilicity of polydimethylsiloxane (PDMS)

     Madadi, Hojjat; Casals Terre, Jasmina
    Biennial Conference on Engineering Systems Design and Analysis
    p. 1-4
    Presentation of work at congresses

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  • High field effects on the electroosmotic flow

     Sureda, Miquel; Casals Terre, Jasmina; Diez, Francisco Javier
    International Conference on Micro and Nano Engineering
    Presentation's date: 2012-09-18
    Presentation of work at congresses

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  • Procedimiento y dispositivo para prevenir el desgaste excesivo en engranajes

     Casals Terre, Jasmina; Farré Lladós, Josep
    Date of request: 2012-07-10
    Invention patent

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    Procedimiento y dispositivo para prevenir el desgaste excesivo en engranajes, que contempla lubricar el punto de contacto entre ruedas (1) de un engranaje (2) inyectando lubricante en dicho punto a través de unas piezas (3) alojadas en los entalles (4) que determinan los espacios entre dientes (5), a través de un sistema de canales con abertura lateral previsto en dichas piezas (3). La anchura (a) y grosor (b) de las piezas (3) coincide, con la anchura del valle (4) el espacio existente entre la superficie de la cresta (7) del diente (5) que engrana y la del valle (4) en que se aloja. Las piezas (3), tienen perforaciones pasantes (8) conectadas a unas acanaladuras longitudinales (9) que en uno de los extremos confluyen en un entalle (10) abierto lateralmente. Para inyectar la lubricación utiliza el mismo sistema que lubrica el resto del engranaje.

  • Viga para dispositivo amplificador de movimientos y dispositivo amplificador de movimientos utilizando dicha viga

     Casals Terre, Jasmina; Gomez Consarnau, Rafael
    Date of request: 2012-05-15
    Invention patent

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  • Diseño de tecnologias integradas reconfigurables en banda milimétrica

     Barlabe Dalmau, Antoni; Casals Terre, Jasmina; Contreras Lizarraga, Adrian Arturo; Pradell Cara, Lluis
    Competitive project

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  • Drug delivery check-valve built in using a novel Pdms

     Casals Terre, Jasmina; Torras, N.; Duch, Marta; Plaza, J. A.; Esteve Tintó, Jaume
    International Conference on Micro and Nano Engineering
    Presentation's date: 2011-09-20
    Presentation of work at congresses

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  • Design and characterization of a magnetic digital flow regulator

     Casals Terre, Jasmina; Duch, Marta; Plaza, J. A.; Esteve, J; Pérez Castillejos, Raquel; Vallés, E.; Gómez, E.
    Sensors and actuators A. Physical
    Vol. 162, num. 1, p. 107-115
    DOI: 10.1016/j.sna.2010.04.025
    Date of publication: 2010-07-01
    Journal article

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    Design, fabrication and testing of a novel micromachined “quasi-digital” microflow regulator for integrated microfluidic systems. Operation relies on the use of a permanent magnet which interacts with an electrodeposited layer of Co–Ni on an array of V-shaped cantilever beams under a constant pressure. Each valve actuates as an on–off fluidic switch, opening or closing its corresponding microchannel. The flow can be adjusted to a set of different values (digital) by changing the position of the magnet. The microflow regulator has been designed, fabricated and experimentally tested showing a flow variation of 211% at a pressure of 160 mbar.

  • Simulation and experimental verification of a quasi digital microflow regulator

     Casals Terre, Jasmina; Duch, M; Plaza, J A; Esteve, J; Pérez-Castillejos, R; Vallès, E; Gómez, E
    The 12th International Conference on Miniaturized Systems for Chemistry and Life Sciences. uTAS 2008
    p. 1-3
    Presentation of work at congresses

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  • Simulation and experimental verification of a quasi digital microflow regulator

     Casals Terre, Jasmina; Duch, M; Plaza, J A; Esteve, J; Pérez-Castillejos, R; Vallès, E; Gómez, E
    The 12th International Conference on Miniaturized Systems for Chemistry and Life Sciences. uTAS 2008
    p. 1-2
    Presentation of work at congresses

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  • Snap-action bistable micromechanisms actuated by nonlinear resonance

     Casals Terre, Jasmina; Fargas-Marques, A; Shkel, A M
    Journal of microelectromechanical systems
    Vol. 17, num. 5, p. 1082-1093
    Date of publication: 2008-10
    Journal article

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  • Design, fabrication and characterization of an externally actuated ON/OFF microvalve

     Casals Terre, Jasmina; Duch, M; Plaza, J A; Esteve, J; Perez-Castillejos, R; Valles, E; Gomez, E
    Sensors and actuators A. Physical
    Vol. 147, num. 2, p. 600-606
    Date of publication: 2008-09
    Journal article

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  • Nuevas arquitecturas para circuitos de comunicaciones de microondas, basadas en MEMS de RF

     Casals Terre, Jasmina; Pradell Cara, Lluis; Barlabe Dalmau, Antoni
    Competitive project

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  • Magnetically actuated microvalve for disposable drug infusor

     Duch, M; Casals Terre, Jasmina; Plaza, J A; Esteve, J; Perez, R; Valles, E; Gomez, E
    International Conference on thermal, mechanical and multi-physics simulation and experiments in micro-electronics and micro-systems (Eurosime 2007).
    Presentation of work at congresses

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  • Dynamics of snapaction by estable micromecanism actuated by none linear resonance

     Casals Terre, Jasmina; Shkel, A
    The third International Conference on advanges in mechanical engineering and mechanics (ICAMEM)
    p. 70-71
    Presentation of work at congresses

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  • Dynamics of snapaction by estable micromecanism actuated by none linear resonance

     Casals Terre, Jasmina; Shkel, A
    The third International Conference on advanges in mechanical engineering and mechanics (ICAMEM)
    Presentation of work at congresses

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  • Magnetically actuated microvalve for disposable drug infusor

     Duch, M; Casals Terre, Jasmina; Plaza, J A; Esteve, J; Perez, R; Vallés, E; Gomez, E
    International Conference on thermal, mechanical and multi-physics simulation and experiments in micro-electronics and micro-systems (Eurosime 2007).
    p. 140-146
    Presentation of work at congresses

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  • Externally actuated magnetic flow regulator for disposable drug infusers

     Duch, M; Casals Terre, Jasmina; Plaza, J A; Esteve, J; Pérez-Castillejos, R; Vallès, E; Gómez, E
    Eleventh International Conference on miniaturized systems for chemistry and life sciences.
    Presentation of work at congresses

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  • Externally actuated magnetic flow regulator for disposable drug infusors

     Duch, M; Casals Terre, Jasmina; Plaza, J A; Esteve, J; Pérez-Castillejos, R; Vallés, E; Gómez, E
    Eleventh International Conference on miniaturized systems for chemistry and life sciences.
    p. 937-939
    Presentation of work at congresses

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  • Resonant Pull-In Condition in Parallel-Plate Electrostatic Actuators

     Fargas-Marques, A; Casals Terre, Jasmina; Shkel, A
    Journal of microelectromechanical systems
    Vol. 16, num. 5, p. 1044-1053
    Date of publication: 2007-10
    Journal article

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  • A low-power-consumption out-of-Plane electrothermal actuator

     Girbau, D; Llamas, M A; Casals Terre, Jasmina; Simo-Selvas, X; Simo Selvas, Francisco Javier; Pradell Cara, Lluis; Lazaro, A
    Journal of microelectromechanical systems
    Vol. 16, num. 3, p. 719-727
    Date of publication: 2007-06
    Journal article

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  • A low power consumption out of plan electrothermal actuator

     Girbau, D; Llamas, M; Casals Terre, Jasmina; Simó, X; Pradell Cara, Lluis; Lázaro, A
    Journal of microelectromechanical systems
    Vol. 16, num. 3, p. 719-727
    Date of publication: 2007-06
    Journal article

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  • Premio nacional de Edición Universitaria 2006, modalidad publicaciones electrónicas

     Mujal Rosas, Ramon Maria; Boix Aragonès, Oriol; Salueña Berna, Javier; Colom Fajula, Xavier; Casals Terre, Jasmina; Marin Genesca, Marcos
    Award or recognition

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  • Micro-and Nano-Engineering 2006 32nd international Conference

     Casals Terre, Jasmina
    International Conference on Micro and Nano Engineering
    Presentation's date: 2006-09-17
    Presentation of work at congresses

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  • Aplicación del aula de autoaprendizaje y del portafolio docente en una asignatura universitaria de carácter técnico

     Salueña Berna, Javier; Casals Terre, Jasmina; Ortiz Marzo, Jose Antonio
    VI Congreso Internacional Virtual de Educación
    p. 1-12
    Presentation of work at congresses

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  • Dynamics of snap-action bistable micromechanism actuated by nonlinear resonance

     Casals Terre, Jasmina; Shkel, Andrei M.
    The Third International Conference on Advances in Mechanical Engineering and Mechanics
    Presentation of work at congresses

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  • DVD Fuentes de energía. Aspectos técnicos, medioambientales y legislativos

     Salueña Berna, Javier; Casals Terre, Jasmina; Mujal Rosas, Ramon Maria; Colom Fajula, Xavier; Boix Aragonès, Oriol
    Jornada d'Innovació Docent UPC
    p. 1-16
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  • Micro-and Nano-Engineering 2006 32nd International Conference

     Casals Terre, Jasmina
    International Conference on Micro and Nano Engineering
    p. 1-829
    Presentation of work at congresses

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  • Micro-and Nano-Engineering 2006 32nd International Conference

     Casals Terre, Jasmina
    International Conference on Micro and Nano Engineering
    p. 1-829
    Presentation of work at congresses

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  • Resonant Pull-in Condition in MEMS resonators

     Fargas-Marques, Andreu; Schoefield, Adam; Casals Terre, Jasmina; Shkel, Andrei M.
    International Conference on Micro and Nano Engineering
    Presentation of work at congresses

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