Results 71 to 80 of about 88,689 (248)

Noise as Diagnostic Tool for Quality and Reliability of MEMS

open access: yesSensors, 2021
This perspective explores future research approaches on the use of noise characteristics of microelectromechanical systems (MEMS) devices as a diagnostic tool to assess their quality and reliability.
Faisal Mohd-Yasin, David J. Nagel
doaj   +1 more source

Silicon‐Embedded Multifunctional Heterogeneous Integration for Miniaturized Photoplethysmography Detection Devices

open access: yesAdvanced Science, EarlyView.
ABSTRACT The multifunctional integration of chips with high flexibility and scalable manufacturing is crucial for enhancing chip performance, reducing chip size, and simplifying chip design. However, balancing volume, cost, flexibility, and functionality using traditional heterogeneous integration methods is challenging.
Lang Chen   +7 more
wiley   +1 more source

Phase Noise Reduction in a VHF MEMS-CMOS Oscillator Using Phononic Crystals

open access: yesIEEE Journal of the Electron Devices Society, 2016
This paper presents experimental results showing reduced phase noise in a very high frequency band microelectromechanical systems (MEMS) oscillator. This has been achieved by engineering the embedded MEMS resonator with phononic crystal structures.
Pei Qin   +3 more
doaj   +1 more source

Recent Advances in Programmable Metasurfaces and Meta‐Devices

open access: yesAdvanced Electronic Materials, EarlyView.
Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao   +4 more
wiley   +1 more source

Three-axis piezoresistive accelerometer with adjustable axial resolutions

open access: yesVietnam Journal of Mechanics, 2012
A three-axis piezoresistive accelerometer which has adjustable resolutions to three axes was developed using MicroElectroMechanical Systems (MEMS) technology.
Bui Thu Hang   +2 more
doaj   +1 more source

A micromachined flow shear-stress sensor based on thermal transfer principles [PDF]

open access: yes, 1999
Microhot-film shear-stress sensors have been developed by using surface micromachining techniques. The sensor consists of a suspended silicon-nitride diaphragm located on top of a vacuum-sealed cavity.
Ho, Chih-Ming   +6 more
core  

Accurate Telescope Mount Positioning with MEMS Accelerometers [PDF]

open access: yes, 2014
This paper describes the advantages and challenges of applying microelectromechanical accelerometer systems (MEMS accelerometers) in order to attain precise, accurate and stateless positioning of telescope mounts.
Csépány, Gergely   +3 more
core   +2 more sources

Microstructured Tactile Sensors With Bismuth Telluride Coatings for Vibration Detection

open access: yesAdvanced Electronic Materials, EarlyView.
The study reports a high‐performance piezoresistive vibration sensor (PVS) based on a Bi₀.5Sb₁.5Te3 functional layer on a PDMS microstructured substrate. The device exhibits high sensitivity (0.24 kPa−1), fast response, and excellent durability over 10 000 cycles.
Yikun Liu   +8 more
wiley   +1 more source

Parylene stiction [PDF]

open access: yes, 2010
This paper presents a preliminary study into stiction between parylene C and substrate surfaces for biocompatible check-valve applications. During fabrication, parylene C is used as the structural material for the check-valve.
Chen, Po-Jui   +3 more
core   +1 more source

Hybrid Oxygen Enrichment and Preheating Strategy for Performance Recovery in Ultra‐Lean Micro–Trapped Vortex Combustors

open access: yesEnergy Science &Engineering, EarlyView.
Ultra‐lean H2 micro‐combustor performance is boosted through regulated O2 enrichment and inlet preheating. A 16‐case Taguchi study (ϕ = 0.3) shows: controlled enrichment and heating increase radiative output and efficiency, but excessive O2/temperature causes flashback.
Anouar Benzitouni   +4 more
wiley   +1 more source

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