Results 31 to 40 of about 274 (132)
Decoupling of a Disk Resonator From Linear Acceleration Via Mass Matrix Perturbation [PDF]
, 2012 Axisymmetric microelectromechanical (MEM) vibratory rate gyroscopes are designed so the central post which attaches the resonator to the sensor case is a nodal point of the two Coriolis-coupled modes that are exploited for angular rate sensing.
Schwartz, David, M’Closkey, Robert T
core +1 more source
Faraday–Ramsey Rotation in Ultrathin Alkali Vapor Cells as an Analogy to Atomic‐Beam Systems
Laser &Photonics Reviews, Volume 20, Issue 10, 22 May 2026.This work demonstrates that ultrathin rubidium vapor cells can emulate atomic‐beam behavior through geometry‐dependent velocity filtering. Employing a spatially separated pump–probe scheme and Faraday–Ramsey rotation, the study reveals coherent atomic dynamics without buffer gas or anti‐relaxation coatings. This approach offers a compact pathway toward
Mark Dikopoltsev +4 more
wiley +1 more source
Investigation on the Quality Factor Limit of the (111) Silicon Based Disk Resonator
Micromachines, 2018 Quality factor is one of the most important parameters for a MEMS resonator. Most MEMS resonators are dominated by thermoelastic dissipation (TED). This paper demonstrates that the TED in a disk resonator that is made of (111) single-crystal silicon is ...
Xin Zhou +10 more
doaj +1 more source
Impact Plasma Amplification of the Ancient Mercury Magnetic Field
Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.Abstract Spacecraft measurements of Mercury indicate that it has a core dynamo with a surface field of 200–800 nT. These data also indicate that the northern hemisphere crust contains remanent magnetization likely produced by an ancient magnetic field. The inferred magnetization intensity is consistent with a wide range of paleofield strengths (0.2–50 ...
Isaac S. Narrett +6 more
wiley +1 more source
Self-induced parametric amplification arising from nonlinear elastic coupling in a micromechanical resonating disk gyroscope [PDF]
, 2015 Parametric amplification, resulting from intentionally varying a parameter in a resonator at twice its resonant frequency, has been successfully employed to increase the sensitivity of many micro- and nano-scale sensors. Here, we introduce the concept of
S. H. Nitzan +6 more
core +1 more source
Wearable Metamaterials with Embodied Intelligence for Programmable Control of Human Limbs Tremor
Advanced Intelligent Systems, Volume 8, Issue 3, March 2026.Resulting from alternating muscle contractions, tremors can severely limit human ability to perform everyday tasks like walking or talking, due to their disruptive nature. Medication and surgery may not always effectively address tremor control. A wearable device embodying programmable smart metamaterials with adaptable intelligence to meet the demand ...
Braion Barbosa de Moura +2 more
wiley +1 more source
Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 1, March 2026.ABSTRACT The conventional ring‐spinning process has been used for over a century, being one of the most used processes in the textile industry. However, this process has some disadvantages at high spindle speeds, such as friction in the traveler/ring components that generates heat, resulting in yarn breakages or lower‐quality production.
Yves Jesus Perez‐Delgado +7 more
wiley +1 more source
Edge-anchored mode-matched micromachined gyroscopic disk resonator [PDF]
2017 19th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS), 2017 © 2017 IEEE. This paper reports on a vacuum packaged circular disk gyroscopic resonator with T-shape anchors fabricated in a (100) single crystalline silicon substrate. This device topology simplifies the fabrication process as compared to previous approaches to realize center-anchored disk gyroscopes. Mode-matching of the trigonal modes of the disk is
Zou, X, Zhao, C, Seshia, AA
openaire +2 more sources
IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.This study develops a system‐level dynamic model for ultra‐long low‐speed rotors of 22 MW offshore wind turbine test platforms, based on Timoshenko beam theory and multi‐bearing support coupling. The model is validated against ANSYS results, with frequency errors <3.1% for key modes, enabling accurate prediction of natural frequencies, critical speeds,
Yang Xue +5 more
wiley +1 more source
Continuation‐Enhanced Harmonic Balance Method for Nonlinear Dynamics in Rotating Machinery
Shock and Vibration, Volume 2026, Issue 1, 2026.Nonlinear response conception in rotating machinery, particularly in systems with squeeze film dampers (SFDs), pose significant challenges for established time‐domain numerical methods due to bifurcations and critical points along the response trajectories.
Muhammad Umar +3 more
wiley +1 more source