Lock-in amplifiers as a platform for weak signal measurements: Development and applications

Q Zhang, W Jeong, DJ Kang - Current Applied Physics, 2024 - Elsevier
The accuracy of modern scientific research and technological advancement is highly reliant
on the ability to accurately measure weak signals. The lock-in amplifier (LIA) represents an …

Subcombination internal resonance of the additive type in the response dynamics of micromachined resonators crossing the impacting threshold

L Ruzziconi, N Jaber, AZ Hajjaj, MI Younis - Chaos, Solitons & Fractals, 2024 - Elsevier
In the present paper, a microbeam-based MEMS device is experimentally driven to
experience a subcombination internal resonance (IR) of the additive type, where the second …

Differential capacitive mass sensing based on mode localization in coupled microbeam arrays

F Najar, M Ghommem, T Rabenimanana… - … Systems and Signal …, 2024 - Elsevier
In this paper, we developed a multi-physics model of an electrostatic MEMS resonator made
of an array of mechanically-coupled beams and investigate its potential use for mass …

Development of MEMS gas sensors equipped with metal organic frameworks

M Ghommem, M Hemid, B Alattar, R Sabouni… - Sensors and Actuators A …, 2024 - Elsevier
In this study, we investigate the potential usage of electrostatic MEMS resonators for CO 2
sensing. The MEMS sensor consists of two cantilever microbeams supporting a microplate …

[HTML][HTML] Piezoresistive snap-through detection for bifurcation-based MEMS sensors

I Litvinov, G Spaer Milo, A Liberzon, S Krylov - Applied Physics Letters, 2024 - pubs.aip.org
We report on the piezoresistive method for detecting stability loss events in
microelectromechanical sensors based on bifurcation. The method involves measuring the …

Exploiting Nonlinearities of Electrostatic MEMS Resonators for Tunable Low Pressure Sensing

B Alattar, M Ghommem - International Journal of Applied …, 2024 - ui.adsabs.harvard.edu
In this paper, we demonstrate the potential functionalization of inherent nonlinearities
associated with electrostatic MEMS resonators for low air pressure applications, with …

Bistable microbeam-based air flow sensor with piezoresistive snap-through detection

I Litvinov, GS Milo, A Liberzon, S Krylov - arXiv preprint arXiv:2312.15451, 2023 - arxiv.org
We report on a first implementation of a piezoresistive interrogation in a bifurcation-based
airflow velocity sensor. The affected by the flow snap-through transitions in a bistable double …

Motion Detection Method of Electrostatic MEMS Resonators Operating in Aqueous Media

M Hemid, B Alattar, M Ghommem… - … on Radio Electronics …, 2024 - ieeexplore.ieee.org
This paper introduces an experimental method to detect the motion of an electrostatic Micro-
Electro-Mechanical Systems (MEMS) resonator in aqueous media. The resonator comprises …

Low Pressure MEMS Sensor: Analysis and Experimental Demonstration

B Alattar, M Ghommem, M Hemid - 2023 IEEE 22nd …, 2023 - ieeexplore.ieee.org
In this paper, we analyze the dynamic response of a MEMS device made of a microplate
supported by two microcantilever beams and electrically actuated via an underneath …