Results 1 to 10 of about 54 (54)
Ultraminiature AlN diaphragm acoustic transducer [PDF]
Applied Physics Letters, 2020 Piezoelectric acoustic transducers consisting of a circular aluminum nitride and silicon nitride unimorph diaphragm and an encapsulated air-filled back cavity are reported. Analytical and finite element analysis models are used to design the transducer to achieve low minimum detectable pressure (MDP) within chosen size restrictions.
Alison E. Hake +3 more
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The Fabrication and Indentation of Cubic Silicon Carbide Diaphragm for Acoustic Sensing [PDF]
Micromachines, 2021 In this study, 550 nm thick cubic silicon carbide square diaphragms were back etched from Si substrate. Then, indentation was carried out to samples with varying dimensions, indentation locations, and loads. The influence of three parameters is documented by analyzing load-displacement curves.
Siti Aisyah Zawawi +3 more
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A Grating Interferometric Acoustic Sensor Based on a Flexible Polymer Diaphragm
Sensors, 2023 This study presents a grating interferometric acoustic sensor based on a flexible polymer diaphragm. A flexible-diaphragm acoustic sensor based on grating interferometry (GI) is proposed through design, fabrication and experimental demonstration. A gold-coated polyethylene terephthalate diaphragm was used for the sensor prototype.
Linsen Xiong, Zhi-mei Qi
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Design and Optimization of Piezoelectric Diaphragm for Self-Powered Acoustic Sensor
Engineering Research Express, 2023 Abstract A self-powered piezoelectric material-based sensor has miniaturization and mass production capabilities. The finite element analysis shows results prior to device fabrication, which discover potential defects in the design, improve sensor performance, and lead to cost-effective fabrication.
Mohini Sawane, Mahanth Prasad
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Modeling Of Microelectromechanical Systems Diaphragm Based Acoustic Sensor
, 2018 {"references": ["Liew Hui Fang et.al, ''A Review of Techniques Design Acoustic Energy Harvesting'', 2015 IEEE Student Conference on Research and Development (SCOReD); DOI: 978-1-4673-9572-4/15, 2015 IEEE.", "Sherif Saleh Ahmad et.al, Electronics Research Institute, Cairo, Egypt, CEERI, Pilani, India, \"Design and Fabrication of Piezoelectric Acoustic ...
Hegde, Vasudha +4 more
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Experimental and numerical observation of flow-acoustics feedback phenomena due to two diaphragms in tandem inserted in a rectangular duct [PDF]
Silouane de Reboul +5 more
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Broadband Response Diaphragm Materials for Human Acoustics Engineering [PDF]
Hongfu Bi +10 more
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Some of the next articles are maybe not open access.
Graphene oxide diaphragm for acoustic fiber sensing
Optical Fiber Sensors Conference 2020 Special Edition, 2021A fiber sensor composed by a graphene oxide membrane at the tip of a capillary is presented. The graphene oxide membrane acts as a low-reflectivity mirror, distanced from a single mode fiber forming a low finesse Fabry-Perot interferometer. The response of the sensor to acoustic pressure with varying frequency is studied in the range between 5 and 45 ...
Catarina Monteiro +3 more
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Acoustic Diaphragm And Speaker
The Journal of the Acoustical Society of America, 2011An acoustic diaphragm includes a diaphragm formed of a uniform material and a first standing wave suppression member provided on a surface of the diaphragm along a first direction of passing through a center of the diaphragm.
Satoshi Imamura +2 more
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Robust Diaphragm For An Acoustic Device
The Journal of the Acoustical Society of America, 2011A rigid, flat plate diaphragm for an acoustic device is illustrated. The internal supporting structure of the diaphragm provides a combination of torsional and translational stiffeners, which resemble a number of crossbars. These stiffeners brace and support the diaphragm motion, thus causing its response to not be adversely affected by fabrication ...
Ronald N. Miles, Weili Cui
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