Search Results - "Brenes, Alexis"
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1
Dynamic analysis of a novel two-sided nonlinear MEMS electrostatic energy harvester
Published in Mechanical systems and signal processing (01-01-2024)“…In this work, we investigate the frequency response of an electrostatic MEMS energy harvester with innovative gap-overlap transducer design. We prove…”
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2
A new approach to design electromagnetic transducers for wideband electrically-tuned vibration energy harvesting
Published in Journal of intelligent material systems and structures (01-07-2023)“…This paper focuses on the opportunities offered by electrical tuning to widen the bandwidth of Vibration Energy Harvesters (VEH) based on electromagnetic…”
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3
Power and frequency bandwidth improvement of piezoelectric energy harvesting devices using phase-shifted synchronous electric charge extraction interface circuit
Published in Journal of intelligent material systems and structures (01-12-2017)“…This article presents a new way to control the synchronous electric charge extraction interface circuit, which was formerly developed to improve the…”
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4
A new approach to design electromagnetic transducers for wideband electrically-tuned vibration energy harvesting
Published in Journal of intelligent material systems and structures (2022)“…This paper focuses on the opportunities offered by electrical tuning towiden the bandwidth of Vibration Energy Harvesters (VEH) based onelectromagnetic…”
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Journal Article -
5
Tunable unipolar synchronized electric charge extraction strategy for piezoelectric energy harvesting
Published in Journal of intelligent material systems and structures (01-07-2019)“…This article focuses on an intelligent control strategy to improve the performances of shunt-rectifier architectures for vibration energy harvesting. It…”
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6
Large-bandwidth piezoelectric energy harvesting with frequency-tuning synchronized electric charge extraction
Published in Sensors and actuators. A. Physical. (01-02-2020)“…[Display omitted] •Experimental evidence of wideband piezoelectric energy harvesting is given, with +200 % bandwidth compared to up-to-date solutions.•The…”
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7
Noise Evasion Properties of Electrostatic Gap-Closing MEMS Resonators with Pulsed Excitation Waveforms
Published in 2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF) (01-07-2020)“…The limits on MEMS resonant sensor performance set by nonlinearity are often studied through a model of a Duffing resonator, with linear actuation. This model…”
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Conference Proceeding -
8
Impact of excitation waveform on the frequency stability of electrostatically-actuated micro-electromechanical oscillators
Published in Journal of sound and vibration (26-05-2018)“…In this paper, the frequency stability of high-Q electrostatically-actuated MEMS oscillators with cubic restoring forces, and its relation with the amplitude,…”
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9
Nondestructive gap dimension estimation of electrostatic MEMS resonators from electrical measurements
Published in Mechanical systems and signal processing (01-11-2018)“…[Display omitted] •A non-destructive method to estimate the etching profile of a MEMS is proposed.•Parameter estimation is performed on the electrical…”
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10
Influence of the Driving Waveform on the Open-Loop Frequency Response of MEMS Resonators With Nonlinear Actuation Schemes
Published in Journal of microelectromechanical systems (01-08-2016)“…This paper deals with the influence of the shape of the driving waveform on the frequency responses of microelectromechanical systems (MEMS) resonators under…”
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11
Characterization of MEMS resonators via feedthrough de-embedding of harmonic and subharmonic pulsed-mode response
Published in Sensors and actuators. A. Physical. (15-06-2015)“…In this paper, we model and give experimental evidence of the efficiency of pulsed-mode actuation for the characterization of capacitive MEMS resonators. In…”
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12
Novel Design of SOI-Based MEMS Bell Plates for Resonant Applications
Published in 2024 Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS (DTIP) (02-06-2024)“…This paper aims at proposing a design of MEMS bell plates manufactured in silicon technology on silicon on insulator (SOI) wafers. The etching process and the…”
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Conference Proceeding -
13
Design of a Novel Electrostatic MEMS Resonator with Hybrid Nonlinear Behavior
Published in 2024 Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS (DTIP) (02-06-2024)“…This paper presents an innovative structure of electrostatic MEMS resonators meant to balance a hardening nonlinearity with a softening nonlinearity at…”
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Conference Proceeding -
14
Parameter estimation from nonlinear frequency response of MEMS resonators
Published in 2015 IEEE International Symposium on Circuits and Systems (ISCAS) (01-05-2015)“…This paper deals with parameter extraction from nonlinear frequency responses of resonant systems. We show that nonlinear frequency responses can be exploited…”
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Conference Proceeding -
15
Efficient Parameter Estimation Techniques for Nonlinear MEMS Resonators
Published in 2024 European Frequency and Time Forum (EFTF) (25-06-2024)“…This paper highlights experimental results obtained during the CARAC-ATAC research project. The aim of the project was to investigate techniques for performing…”
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Conference Proceeding -
16
Experimental investigation of parametric evasion properties of resonant sensors using electrostatic gap-closing actuation
Published in 2021 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL) (22-03-2021)“…The limits on MEMS resonant sensor performance set by nonlinearity are often studied through a model of a Duffing resonator, with linear actuation. This model…”
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Conference Proceeding -
17
Power-limiting phenomena in a magnetoelectric transducer for wireless power transfer
Published in 2020 IEEE Wireless Power Transfer Conference (WPTC) (15-11-2020)“…In this paper, we provide insights to distinguish between the impact of the piezoelectric and the magnetostrictive layers on the electromechanical behavior of…”
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Conference Proceeding -
18
Design and optimization of a Vibrational MEMS-Based Energy Harvester
Published in 2022 17th Conference on Ph.D Research in Microelectronics and Electronics (PRIME) (12-06-2022)“…This paper describes the design of a Vibrational Energy Harvester (VEH) based on a microelectromechanical system (MEMS) with gap-closing electrostatic…”
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Conference Proceeding -
19
Analysis and Design of a Self-Powered VEH System Based on ULP Comparator
Published in 2023 IEEE 14th Latin America Symposium on Circuits and Systems (LASCAS) (27-02-2023)“…The study conducted addresses a vibrational energy harvester (VEH) based on a microelectromechanical system (MEMS) with a gap-closing electrostatic resonator…”
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Conference Proceeding -
20
Towards the optimization of excitation waveform for electrostatic resonant sensors with enhanced frequency stability
Published in 2019 Symposium on Design, Test, Integration & Packaging of MEMS and MOEMS (DTIP) (01-05-2019)“…We study a novel excitation scheme for gap-closing electrostatically-actuated MEMS resonators. We show that this scheme can be used to cancel out the impact of…”
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Conference Proceeding