Now showing items 21-40 of 86

    • 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)
      Article
      Open Access
      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
      Open Access
      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)
      Article
      Open Access
      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)
      Article
      Restricted access - publisher's policy
      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)
      Article
      Open Access
      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)
      Article
      Open Access
      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
      Restricted access - publisher's policy
      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 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)
      Conference report
      Open Access
      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
      Restricted access - publisher's policy
      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
      Open Access
      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)
      Conference report
      Open Access
      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)
      Part of book or chapter of book
      Restricted access - publisher's policy
    • 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)
      Conference report
      Open Access
      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)
      Article
      Open Access
      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 ...
    • Electrical properties of PECVD amorphous silicon-carbon alloys from amorphous-crystalline heterojunctions 

      Marsal Amenós, Félix; Pallarés Viña, Miguel Juan; Correig Blanchar, Francesc Xavier; Domínguez Pumar, Manuel; Bardés Llorensí, Daniel; Calderer Cardona, Josep; Alcubilla González, Ramón (1997-08)
      Article
      Restricted access - publisher's policy
      Heterojunction diodes fabricated by plasma enhanced chemical vapour deposition of n-type amorphous silicon carbide on p-type crystalline silicon are analysed by measuring their current-voltage characteristics. Two carrier ...
    • Embedded systems with Linux: programming the Beaglebone board 

      Domínguez Pumar, Manuel (AMG Editions, 2018-06-06)
      Book
      Open Access
    • Embedded systems with Linux: programming the GPMC driver 

      Domínguez Pumar, Manuel (AMG Editions, 2018-06-06)
      Book
      Open Access
    • Embedded systems with Linux: working with the TT01 cape 

      Domínguez Pumar, Manuel (AMG Editions, 2018-06-06)
      Book
      Open Access
    • Energy efficiency of non-synchronized pulsed actuations on leaky resonators 

      Domínguez Pumar, Manuel (2013-08-01)
      Article
      Restricted access - publisher's policy
      The purpose of this work is to analyze the optimality of pulsed actuations of leaky resonators when the ratio between the resonator and sampling frequencies is irrational. This is the case when the actuation system and ...
    • Energy efficiency of pulsed actuations on linear resonators 

      Domínguez Pumar, Manuel (2009-12)
      Article
      Open Access
      The objective of this paper is to show that under some circumstances, the sign of a sampled sinusoid sequences, briefly 􀀀, is optimal to provide maximum energy transfer to linear resonators in the context of discrete-time ...