Micromechanical vibro-impact systems: a review

CP Tsai, WC Li - Journal of Micromechanics and …, 2023 - iopscience.iop.org
Spurred by the invention of the tapping-mode atomic force microscopy three decades ago,
various micromechanical structures and systems that utilize parts with mechanical impact …

CMOS-MEMS vibro-impact devices and applications

CP Tsai, WC Li - Frontiers in Mechanical Engineering, 2022 - frontiersin.org
CMOS-MEMS-based vibro-impact devices that utilize impact-induced nonlinear dynamics
have been shown to yield unique and unprecedented functionalities with on-chip integration …

Exploiting parallelism in resonators for large voltage gain in low power wake up radio front ends

R Lu, T Manzaneque, Y Yang… - 2018 IEEE Micro Electro …, 2018 - ieeexplore.ieee.org
This paper reports a lithium niobate (LiNbO 3) resonator array that, when used as a passive
voltage amplifier, can produce a passive resonant voltage gain among the highest reported …

Design and fabrication of AlN RF MEMS switch for near-zero power RF wake-up receivers

T Wu, G Chen, C Cassella, WZ Zhu… - 2017 IEEE …, 2017 - ieeexplore.ieee.org
We describe an AlN-based resonant switch (resoswitch) for use in a Near-Zero (NZero) RF
Wake-up receiver. A folded beam structure compensates for the curvature caused by the …

A CMOS-MEMS CC-beam metal resoswitch for zero quiescent power receiver applications

SC Lu, CP Tsai, WC Li - 2018 IEEE Micro Electro Mechanical …, 2018 - ieeexplore.ieee.org
A micromechanical CC-beam resonant switch, aka resoswitch, based on a 0.35-μm 2-poly-4-
metal (2P4M) CMOS-MEMS process platform has been demonstrated. In particular, a 2.1 …

Design and fabrication of an electrostatic aln rf mems switch for near-zero power rf wake-up receivers

WZ Zhu, T Wu, G Chen, C Cassella… - IEEE Sensors …, 2018 - ieeexplore.ieee.org
We describe an aluminum nitride (AlN)-based resonant switch for use in a near zero power
radio frequency (RF) wake-up receiver. A folded beam structure with a slot compensates for …

A Micro-Acoustic Enhanced Low-Impedance Antenna System for IoT Wake-Up Receivers

G Michetti, L Colombo, G Giribaldi… - IEEE Internet of …, 2023 - ieeexplore.ieee.org
In this work, we propose a passive radio frequency (RF) front-end tailored for wake-up
receivers (WuRx) to be deployed in cellular Internet of Things (IoT) devices and wearables …

[PDF][PDF] 750 MHz Zero-Power MEMS-Based Wake-Up Receiver with-60 dBm Sensitivity

C Cassella, M Assylbekova… - 2018 Solid …, 2018 - transducer-research-foundation.org
In this work, we present the first fully-passive RF wake-up receiver (WUR). The WUR relies
on a solid-state envelope detector (ED) and a MEMS-based cantilever switch (RS) acting as …

Limitations on MEMS design resulting from random stress gradient variations in sputtered thin films

WZ Zhu, M Assylbekova… - Journal of Micromechanics …, 2021 - iopscience.iop.org
Residual stress gradients often negatively affect the performance of MEMS devices, causing
film curvature and changing the designed gaps of released structures. In this work, we built …

Micromechanical vibro-impact resonator-enabled sensing applications

WC Li - 2021 21st International Conference on Solid-State …, 2021 - ieeexplore.ieee.org
Micromechanical vibro-impact resonators, for which the devices operate in the highly
nonlinear region where the resonator structures physically impact the output electrodes or …