Exploració per tema "MEMS"

Ara es mostren els items 1-20 de 42

    • 2D Liquid Lens Based on EWOD 

      Ahmadi Zeidabadi, Maziar (Universitat Politècnica de Catalunya, 2012-09-10)
      Projecte Final de Màster Oficial
      Accés obert
      [ANGLÈS] This thesis presents the fabrication, development and characteristics of a liquid lens based on electrowetting. Essentially, when the lens is in liquid form, both its position and its curvature can be reversibly ...

    • 3Cat-1 project: a multi-payload CubeSat for scientific experiments and technology demonstrators 

      Jové Casulleras, Roger; Araguz López, Carles; Via Ortega, Pol; Solanellas Bofarull, Arnau; Amézaga Sarries, Adrià; Vidal Mateu, David; Muñoz Martin, Joan Francesc; Marí Barceló, Marc; Olivé Muñiz, Roger; Sáez Hernández, Alberto; Jané Abad, Jaume; Bou Balust, Elisenda; Iannazzo Soteras, Mario Enrique; Gorreta Mariné, Sergio; Ortega Villasclaras, Pablo Rafael; Pons Nin, Joan; Domínguez Pumar, Manuel; Alarcón Cot, Eduardo José; Ramos Castro, Juan José; Camps Carmona, Adriano José (2017)
      Article
      Accés obert
      This article introduces 3 Cat-1, the first project of the Technical University of Catalonia to build and launch a nano-satellite. Its main scope is to develop, construct, assemble, test and launch into a low Earth orbit a ...

    • A cmos-mems beol 2-axis lorentz-force magnetometer with device-level offset cancellation 

      Sánchez Chiva, José María; Valle Fraga, Juan José; Fernández, Daniel; Madrenas Boadas, Jordi (2020-10-19)
      Article
      Accés obert
      Lorentz-force Microelectromechanical Systems (MEMS) magnetometers have been proposed as a replacement for magnetometers currently used in consumer electronics market. Being MEMS devices, they can be manufactured in the ...

    • A CubeSAT payload for in-situ monitoring of pentacene degradation due to atomic oxygen etching in LEO 

      Gorreta Mariné, Sergio; Pons Nin, Joan; López Rodríguez, Gema; Figueras, Eduard; Jové Casulleras, Roger; Araguz López, Carles; Via Ortega, Pol; Camps Carmona, Adriano José; Domínguez Pumar, Manuel (2016-09-01)
      Article
      Accés obert
      This paper reports and discusses the design and ground tests of a CubeSat payload which allows to measure, in-situ and in real time, the degradation of a polymer of electronic interest due to atomic oxygen etching in LEO. ...

    • A flexoelectric microelectromechanical system on silicon 

      Bhaskar, Umesh Kumar; Banerjee, Nirupam; Abdollahi Hosnijeh, Amir; Wang, Zhen; Scholm, Darrell G.; Rijnders, Guus; Catalan, Gustau (2016)
      Article
      Accés obert
      Flexoelectricity allows a dielectric material to polarize in response to a mechanical bending moment and, conversely, to bend in response to an electric field. Compared with piezoelectricity, flexoelectricity is a weak ...

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

      Girbau Sala, David; Llamas Morote, Marco Antonio; Casals Terré, Jasmina; Simó Selvas, Francisco Javier; Pradell i Cara, Lluís; Lázaro Guillén, Antoni (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-06-30)
      Article
      Accés obert
      This paper proposes a new vertical electrothermal actuator. It can be considered as a hybrid between the traditional in-plane buckle-beam actuator and the vertical hot-cold actuator. It is here referred to as vertical ...

    • A mixed-signal control system for Lorentz-force resonant MEMS magnetometers 

      Sánchez Chiva, José María; Valle Fraga, Juan José; Fernández, Daniel; Madrenas Boadas, Jordi (2019-09-01)
      Article
      Accés obert
      This paper presents a mixed-signal closed-loop control system for Lorentz force resonant MEMS magnetometers. The control system contributes to 1) the automatic phase control of the loop, that allows start-up and keeps ...

    • A self-test and dynamics characterization circuit for MEMS electrostatic actuators 

      Fernández Martínez, Daniel; Madrenas Boadas, Jordi; Cosp Vilella, Jordi (2011-03)
      Article
      Accés restringit per política de l'editorial
      This paper presents a high-bandwidth capacitance estimation and driving circuit especially tailored for its use with MEMS electrostatic actuators. The circuit can be integrated as a part of a system comprising an electrostatic ...

    • A swarm of femtosatellites for lower thermospheric density determination. 

      Lledó Ardila, Carlos (Universitat Politècnica de Catalunya, 2015-07-30)
      Projecte Final de Màster Oficial
      Accés obert
      The Lower thermosphere (between 80 and 350 km) is quite badly known due to the scarcity of satellites in this region. Nevertheless, it is an important region in several respects. Firstly, because its density determines ...

    • A test setup for the characterization of Lorentz-force MEMS magnetometers 

      Sánchez Chiva, José María; Valle Fraga, Juan José; Fernández Martínez, Daniel; Madrenas Boadas, Jordi (2021-09-13)
      Article
      Accés obert
      Lorentz-force MEMS magnetometers are interesting candidates for the replacement of magnetometers in consumer electronics products. Plenty of works in the literature propose MEMS magnetometers, their readout circuits and ...

    • An overview of lidar imaging systems for autonomous vehicles 

      Royo Royo, Santiago; Ballesta Garcia, Maria (Multidisciplinary Digital Publishing Institute, 2019-10-01)
      Article
      Accés obert
      Lidar imaging systems are one of the hottest topics in the optronics industry. The need to sense the surroundings of every autonomous vehicle has pushed forward a race dedicated to deciding the final solution to be ...

    • Application of pulsed digital oscillators (PDO) 

      Notaro, Alessandro (Universitat Politècnica de Catalunya, 2011-03-30)
      Projecte/Treball Final de Carrera
      Accés obert
      Català: En aquest treball, s'ha estudiat un sistema que ja existeix per la selecció de les modes de ressonància d'un ressonador MEMS actuant sobre paràmetres del llaç de re-alimentació. La caracterització es va completar ...

    • Assessment of noise of MEMS IMU sensors of different grades for GNSS/IMU navigation 

      Suvorkin, Vladimir; García Fernández, Miquel; González Casado, Guillermo; Li, Mowen; Rovira Garcia, Adrià (Multidisciplinary Digital Publishing Institute (MDPI), 2024-03-19)
      Article
      Accés obert
      Inertial measurement units (IMUs) are key components of various applications including navigation, robotics, aerospace, and automotive systems. IMU sensor characteristics have a significant impact on the accuracy and ...

    • Automotive Events Detection using MEMS Accelerometers 

      San Vicente Foronda, Lorena (Universitat Politècnica de Catalunya, 2009-11-27)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   PildoLabs
      Imagine un teléfono móvil, que sea capaz de detectar un accidente de tráfico y notificarlo a una central. Pero no solo eso si no que además, envíe la posición donde está situado. Los sistemas de emergencia tendrían toda ...

    • Closed-loop compensation of dielectric charge induced by ionizing radiation 

      Domínguez Pumar, Manuel; Gorreta Mariné, Sergio; Pons Nin, Joan; Gomez Rodriguez, Faustino; Gonzalez Castaño, Diego; Muschitiello, Michele (2015-06-01)
      Article
      Accés obert
      This letter investigates the capability of dielectric charge control loops to cope with charge induced by ionizing radiation. To this effect, an microelectromechanical systems (MEMS) variable capacitor has been irradiated ...

    • Comparison of air gap breakdown and substrate injection as mechanisms to induce dielectric charching in microelectromechanical switches 

      Molinero Giles, David; Castañer Muñoz, Luis María (American Institute of Physics, 2008-01-29)
      Article
      Accés restringit per política de l'editorial
      Experiments show that air breakdown and substrate carrier conduction can be responsible of the dielectric charging of microelectromechanical devices after electrical stress. Test conducted under vacuum allows us to isolate ...

    • Desenvolupament dʼun element translineal dʼalt ample de banda per al processat de senyal de MEMS i dels seus circuits associats 

      Riera Baylach, Marc (Universitat Politècnica de Catalunya, 2010-03)
      Projecte/Treball Final de Carrera
      Accés obert
      La realització dʼaquest projecte parteix del mètode de control de lʼestàtica i la dinàmica per actuadors electrostàtics MEMS per posicionament analògic proposat per Daniel Fernández i Jordi Madrenas en el paper “Position, ...

    • Design and Implementation of a femto-satellite technology demonstrator 

      Kravchenko, Victor (Universitat Politècnica de Catalunya, 2011-07-05)
      Projecte Final de Màster Oficial
      Accés obert
      The present work is aimed to demonstrate the development and implementation of a scalable femto-satellite technology demonstrator, experimentation and development platform in order to practically prove the possibility ...

    • Design of a femto-satellite for high-altitude thermospheric studies 

      Moschtaq, Mohammad Raschiq (Universitat Politècnica de Catalunya, 2021-02-12)
      Projecte Final de Màster Oficial
      Accés obert
      This work deals with the design of a femto-satellite for scientific studies. The goal of the femto-satellite is to model the density of the thermosphere by measuring the orbital decay caused by atmospheric drag. The proposed ...

    • Design of Low Noise Readout Amplifiers for Monolithic Capacitive CMOS-MEMS Accelerometers 

      Sánchez Chiva, José María (Universitat Politècnica de Catalunya, 2014-09-09)
      Projecte Final de Màster Oficial
      Accés obert
      [ANGLÈS] This thesis report describes the design process, the implementation and the simulation and measurement results of two different readout circuits to be used with two monolithic MEMS accelerometers fabricated by ...