Mode coupling and nonlinear resonances of MEMS arch resonators for bandpass filters

AZ Hajjaj, MA Hafiz, MI Younis - Scientific reports, 2017 - nature.com
We experimentally demonstrate an exploitation of the nonlinear softening, hardening, and
veering phenomena (near crossing), where the frequencies of two vibration modes get close …

Frequency stabilization in a pseudo-linear micromechanical parametric oscillator

Y Xu, L Wang, C Wang, J Ren, J Lv, G Shao… - International Journal of …, 2024 - Elsevier
Micromechanical oscillator sustains oscillation through a velocity-proportional feedback
force. Stabilization of the oscillation frequency is typically achieved by increasing the …

A resonant gas sensor based on multimode excitation of a buckled microbeam

AZ Hajjaj, N Jaber, N Alcheikh… - IEEE Sensors Journal, 2019 - ieeexplore.ieee.org
We report a new gas sensing technique based on the simultaneous tracking of multiple
modes of vibration of an electrothermally heated bridge resonator operated near the …

The static and dynamic behavior of MEMS arch resonators near veering and the impact of initial shapes

AZ Hajjaj, N Alcheikh, MI Younis - International Journal of Non-Linear …, 2017 - Elsevier
We investigate experimentally and analytically the effect of initial shapes, arc and cosine
wave, on the static and dynamic behavior of microelectromechanical systems (MEMS) arch …

Ultra-Tuning of nonlinear drumhead MEMS resonators by Electro-Thermoelastic buckling

A Kanj, P Ferrari, AM van der Zande, AF Vakakis… - … Systems and Signal …, 2023 - Elsevier
Nonlinear micro-electro-mechanical systems (MEMS) resonators open new opportunities in
sensing and signal manipulation compared to their linear counterparts by enabling …

A scalable pressure sensor based on an electrothermally and electrostatically operated resonator

AZ Hajjaj, N Alcheikh, MAA Hafiz, S Ilyas… - Applied Physics …, 2017 - pubs.aip.org
We present a pressure sensor based on the convective cooling of the air surrounding an
electrothermally heated resonant bridge. Unlike conventional pressure sensors that rely on …

A highly sensitive and wide-range resonant magnetic micro-sensor based on a buckled micro-beam

N Alcheikh, SB Mbarek, HM Ouakad… - Sensors and Actuators A …, 2021 - Elsevier
We experimentally demonstrate a miniature highly sensitive wide-range resonant magnetic
Lorentz-force micro-sensor. The concept is demonstrated based on the detection of the …

Generalized MGT heat transfer model for an electro-thermal microbeam lying on a viscous-pasternak foundation with a laser excitation heat source

AE Abouelregal, M Marin, SS Askar - Symmetry, 2023 - mdpi.com
In this study, the effects of laser light on the heat transfer of a thin beam heated by an applied
current and voltage are investigated. Laser heating pulses are simulated as endogenous …

Exploiting nonlinearities of micro-machined resonators for filtering applications

S Ilyas, KN Chappanda, MI Younis - Applied Physics Letters, 2017 - pubs.aip.org
We demonstrate the exploitation of the nonlinear behavior of two electrically coupled
microbeam resonators to realize a band-pass filter. More specifically, we combine their …

Tunable nanoelectromechanical resonator for logic computations

SNR Kazmi, MAA Hafiz, KN Chappanda, S Ilyas… - Nanoscale, 2017 - pubs.rsc.org
There has been remarkable interest in nanomechanical computing elements that can
potentially lead to a new era in computation due to their re-configurability, high integration …