Results 21 to 30 of about 890 (213)
Silicon photonic acoustic detector (SPADE) using a silicon nitride microring resonator
Photoacoustics, 2023 Silicon photonics is an emerging platform for acoustic sensing, offering exceptional miniaturization and sensitivity. While efforts have focused on silicon-based resonators, silicon nitride resonators can potentially achieve higher Q-factors, further ...
Michael Nagli +7 more
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Combating acoustic heterogeneity in photoacoustic computed tomography: A review [PDF]
Journal of Innovative Optical Health Sciences, 2020 Based on the energy conversion of light into sound, photoacoustic computed tomography (PACT) is an emerging biomedical imaging modality and has unique applications in a range of biomedical fields.
Tong Wang, Wen Liu, Chao Tian
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Modeling of 2D Acoustic Radiation Patterns as a Control Problem
Mathematics, 2022 A problem of modeling radiation patterns of wave sources in two-dimensional acoustic tomography is considered. Each source has its own radiation patterns, and their modeling will be used to improve the solvability of inverse problems of recovering the ...
Maxim Shishlenin +3 more
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BioResources, 2015 Determination of the stiffness constants of Muiracatiara wood (Astronium lecointei) was performed using Fakopp 3D acoustic tomography and James V Mk II ultrasound devices.
Rejane Costa Alves +3 more
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Remote Sensing, 2023 Underwater acoustic tomography is an advanced technology in water environment observation. Sound propagation duration between transceivers is used for underwater parameter distribution profile reconstruction in the inverse problem.
Pan Xu +6 more
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Energies, 2022 The acoustic characteristics of hydrates are important parameters in geophysical hydrate exploration and hydrate resource estimation. The microscale distribution of hydrate has an important influence on the acoustic response of a hydrate-bearing ...
Qingtao Bu +9 more
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Adaptive acoustical tomography [PDF]
The Journal of the Acoustical Society of America, 1986 Acoustical and seismological tomography differ significantly from tomography as practiced using energy which travels in straight lines, such as with x rays. The complication of refraction introduces a large number of new variables. This has the indirect result of reducing the variance for most of the variables. Usually overlooked, conveniently, is that
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eLife, 2015 Perceptual abilities of animals, like echolocating bats, are difficult to study because they challenge our understanding of non-visual senses. We used novel acoustic tomography to convert echoes into visual representations and compare these cues to ...
Elizabeth L Clare, Marc W Holderied
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Scholarpedia, 2014 Photoacoustic tomography (PAT), sometimes referred to as optoacoustic tomography, is defined as cross-sectional or three-dimensional (3D) imaging of a material based on the photoacoustic effect (Wang 2009). Therefore, PAT possesses spatial resolution along the depth dimension and at least one of the other two dimensions.
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On the recovering of acoustic attenuation in 2D acoustic tomography
Journal of Physics: Conference Series, 2021 AbstractThe inverse problem of recovering the acoustic attenuation in the inclusions inside the human tissue is considered. The coefficient inverse problem is formulated for the first-order system of PDE. We reduce the inverse problem to the optimization of the cost functional by gradient method.
M A Shishlenin +2 more
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