Ara es mostren els items 20-39 de 112

    • Boosting the sensitivity and hysteresis of a gel polymer electrolyte by embedding SiO2 nanoparticles and PVP for humidity applications 

      Cedeño Mata, Kristel Michelle; Orpella García, Alberto; Domínguez Pumar, Manuel; Bermejo Broto, Sandra (Multidisciplinary Digital Publishing Institute (MDPI), 2024-01-10)
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      Accés obert
      Enhancing sensitivity and hysteresis in capacitance humidity sensors is vital for precise, reliable, and consistent humidity control. This study explores this concern by incorporating polyvinylpyrrolidone (PVP) and SiO2 ...
    • Characterization method of the dynamics of the trapped charge in contactless capacitive MEMS 

      Gorreta Mariné, Sergio; Pons Nin, Joan; Domínguez Pumar, Manuel; Blokhina, Elena; Feely, Orla (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Dielectric charging of insulating films in microelectromechanical systems (MEMS) has a crucial effect on the operation of those devices. A new method is presented in order to characterize the dynamics of the charge trapped ...
    • Characterization of dielectric charging in MEMS using Diffusive Representation 

      Atienza García, María Teresa; Gorreta Mariné, Sergio; Pons Nin, Joan; Domínguez Pumar, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2016-09-22)
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      Accés obert
    • Charge induced by ionizing radiation understood as a disturbance in a sliding mode control of dielectric charge 

      Domínguez Pumar, Manuel; Gorreta Mariné, Sergio; Pons Nin, Joan; Gomez Rodriguez, Faustino; Gonzalez Castaño, Diego (2015-07-03)
      Article
      Accés obert
      The purpose of this paper is to show that the charge induced by radiation in a dielectric on which a sigma–delta control of dielectric charge is implemented, can be seen as a disturbance in a sliding mode controller. ...
    • Charge trapping control in MOS capacitors 

      Domínguez Pumar, Manuel; Bheesayagari, Chenna Reddy; Gorreta Mariné, Sergio; López Rodríguez, Gema; Martín García, Isidro; Blokhina, Elena; Pons Nin, Joan (Institute of Electrical and Electronics Engineers (IEEE), 2016-12-26)
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      Accés obert
      This paper presents an active control of C-V characteristic for MOS capacitors based on Sliding Mode control and sigma-delta-modulation. The capacitance of the device at a certain voltage is measured periodically and ...
    • Circuit modeling of a MEMS varactor including dielectric charging dynamics 

      Giounanlis, Panagiotis; Andrade Miceli, Dennis; Gorreta Mariné, Sergio; Pons Nin, Joan; Domínguez Pumar, Manuel; Blokhina, Elena (Institute of Physics (IOP), 2016-06-01)
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      Accés obert
      Electrical models for MEMS varactors including the effect of dielectric charging dynamics are not available in commercial circuit simulators. In this paper a circuit model using lumped ideal elements available in the Cadence ...
    • Closed-loop compensation of charge trapping induced by ionizing radiation in MOS capacitors 

      Domínguez Pumar, Manuel; Bheesayagari, Chenna Reddy; Gorreta Mariné, Sergio; Lopez Chavez, G.; Pons Nin, Joan (Institute of Electrical and Electronics Engineers (IEEE), 2017-08-31)
      Article
      Accés obert
      The objective of this work is to explore the capability of a charge trapping control loop to continuously compensate charge induced by ionizing radiation in the dielectric of MOS capacitors. To this effect, two devices ...
    • 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)
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      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 ...
    • Condution mechanisms and charge trapping control in SiO2 nanoparticle MIM capacitors 

      Bheesayagari, Chenna Reddy; Pons Nin, Joan; Orpella García, Alberto; Véliz Noboa, Bremnen Marino; Bermejo Broto, Sandra; Domínguez Pumar, Manuel (2020-06-20)
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      Accés obert
      The objective of this paper is to present a charge trapping control method for MIM capacitors in whichthe dielectric is made of electrospray-deposited silica nanoparticles. The influence of the bias voltage onthe impedance ...
    • Control of MEMS vibration modes with pulsed digital Oscillators. Part II: simulation and experimental results 

      Domínguez Pumar, Manuel; Ricart Campos, Jordi; Pons Nin, Joan; Blokhina, Elena; Gorreta Mariné, Sergio; Hernando, Jorge; Manzaneque, Tomas; Sanchez Rojas, Jose Luis; Feely, Orla (2010-08)
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      Accés obert
      This paper extends our previous work on the selective excitation of mechanical vibration modes in MEMS devices using pulsed digital oscillators (PDOs). It begins by presenting extensive simulation results using the set ...
    • Control of MEMS vibration modes with pulsed digital oscillators: part I—theory 

      Blokhina, Elena; Pons Nin, Joan; Ricart Campos, Jordi; Feely, Orla; Domínguez Pumar, Manuel (2010-08)
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      Accés obert
      The aim of this paper is to show that it is possible to excite selectively different mechanical resonant modes of a MEMS structure using pulsed digital oscillators (PDOs). This can be done by simply changing the working ...
    • Delta-sigma control of dielectric charge for contactless capacitive MEMS 

      Gorreta Mariné, Sergio; Pons Nin, Joan; Blokhina, Elena; Feely, Orla; Domínguez Pumar, Manuel (2014-08-01)
      Article
      Accés restringit per política de l'editorial
      In this paper, we present a new closed-loop control method of dielectric charge for contactless capacitive microelectromechanical systems. The method uses a feedback loop to maintain the net charge in the dielectric layer ...
    • Design and smart control of sensors for optimal performance: a application to wind sensing in Mars 

      Domínguez Pumar, Manuel; Kowalski, Lukasz; Jiménez Serres, Vicente; Pons Nin, Joan; Bermejo Broto, Sandra; Rodríguez Pérez, Ivette María; Soria Guerrero, Manel (2019)
      Text en actes de congrés
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      Sensor performance in terms of time response and sensitivity can be dramatically enhanced by operating sensors under what may be called a “constant state operation”. This means that any change in the sensor due to external ...
    • Design and test of resonators using PiezoMUMPS technology 

      Pons Nin, Joan; Gorreta Mariné, Sergio; Domínguez Pumar, Manuel; Blokhina, Elena; O'Connell, D.; Feely, Orla (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés obert
      This paper presents preliminary results obtained with devices fabricated with the new PiezoMUMPS process. Since these devices will be used as resonators in applications based on Pulsed Digital Oscillators, we analyze, both ...
    • Dielectric charge control in electrostatic MEMS positioners/varactors 

      Blokhina, Elena; Gorreta Mariné, Sergio; Lopez, David; Molinero Giles, David; Feely, Orla; Pons Nin, Joan; Domínguez Pumar, Manuel (2012-06)
      Article
      Accés restringit per política de l'editorial
      A new dynamical closed-loop method is proposed to control dielectric charging in capacitive microelectromechanical systems (MEMS) positioners/varactors for enhanced reliability and robustness. Instead of adjusting the ...
    • Diffusive representation and sliding mode control of charge trapping in Al2O3MOS capacitors 

      Bheesayagari, Chenna Reddy; Pons Nin, Joan; Atienza García, María Teresa; Domínguez Pumar, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2019-01-01)
      Article
      Accés obert
      The objective of this paper is to introduce a modeling strategy to characterize the dynamics of the charge trapped in the dielectric of MOS capacitors, using Diffusive Representation. Experimental corroboration is presented ...
    • Digital resonance for MEMS 

      Ricart Campos, Jordi; Pons Nin, Joan; Gorreta Mariné, Sergio; Domínguez Pumar, Manuel (IEEE Press. Institute of Electrical and Electronics Engineers, 2009-02-11)
      Text en actes de congrés
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      This work shows the application of Pulsed Digital Oscillators to the detection of physical changes in MEMS devices that cause small shifts in their resonance frequencies. Such devices can be used as resonators in several ...
    • Discrete-time modelling of Sigma-Delta Inspired Systems for MEMS 

      Blokhina, Elena; Giounanlis, Panagiotis; Domínguez Pumar, Manuel; Gorreta Mariné, Sergio; Pons Nin, Joan; Feely, Orla (Springer, 2015)
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      Accés restringit per política de l'editorial
    • Dynamics of the MEMS pulsed digital oscillator with multiple delays in the feedback loop 

      Blokhina, Elena; Feely, Orla; Domínguez Pumar, Manuel (IEEE Press. Institute of Electrical and Electronics Engineers, 2009-05)
      Text en actes de congrés
      Accés obert
      In this paper we apply methods of nonlinear dynamics to examine the behavior of the pulsed digital oscillator for microelectromechanical systems (MEMS). We study the regions of existence of oscillations and demonstrate ...
    • Effect of dielectrophoretic force in the self-assembly process of electrosprayed nanoparticles 

      Castañer Muñoz, Luis María; Bermejo Broto, Sandra; Domínguez Pumar, Manuel (2017-03-31)
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      Accés obert
      In this work the effect of the dielectrophoretic force (DEP) in the self-assembly process of nanoparticles electrosprayed onto a substrate, is examined. DEP force is originated by the electric field created by the electrospray ...