Near‐Field Acoustic Imaging Using Fiber‐Optic Distributed Acoustic Sensing and Beamforming Techniques [PDF]
Advanced ScienceDistributed acoustic sensors (DAS) detect mechanical vibrations along optical fibers with meter‐scale spatial resolution, capturing the waves directly reaching the fiber. Deploying dense fiber nets in two or three dimensions for spatially‐precise sensing
Marcelo A. Soto +1 more
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Enhanced Lateral Resolution in Acoustic Imaging: From High- to Super-Resolution [PDF]
SensorsAcoustic imaging, especially ultrasound, underpins a wide range of applications from non-destructive evaluation to medical and materials analysis, yet its performance is ultimately constrained by lateral resolution.
Zheng Xia +4 more
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Robust Acoustic Imaging Based on Bregman Iteration and Fast Iterative Shrinkage-Thresholding Algorithm [PDF]
Sensors, 2020 The acoustic imaging (AI) technique could map the position and the strength of the sound source via the signal processing of the microphone array. Conventional methods, including far-field beamforming (BF) and near-field acoustic holography (NAH), are ...
Linsen Huang +4 more
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Topology Optimization Design Method for Acoustic Imaging Array of Power Equipment [PDF]
SensorsAcoustic imaging technology has the advantages of non-contact and intuitive positioning. It is suitable for the rapid positioning of defects such as the mechanical loosening, discharge, and DC bias of power equipment. However, the existing research lacks
Jun Xiong +3 more
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An Iterative Fast Microphone Array Design Method Employing Equilateral Triangular Subarrays [PDF]
SensorsIn industrial acoustic imaging, microphone array design is often limited by the strong frequency dependence of array performance, the high computational cost of optimization, and the expense of deploying large numbers of microphones.
Xiaobin Hong +3 more
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Bimodal Imaging of Tumors via Genetically Engineered Escherichia coli
Pharmaceutics, 2022 Although there are emerging innovations of molecular imaging probes to detect and image tumors, most of these molecular dyes and nanoparticles have limitations of low targetability in tumors and fast clearance when administered systemically. In contrast,
Linlin Zhang +5 more
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Three-dimensional localization of point acoustic sources using a planar microphone array combined with beamforming [PDF]
Royal Society Open Science, 2018 This paper presents a beamforming-based acoustic imaging (BBAI) method employing a two-dimensional (2D) microphone array that not only can locate an acoustic source in the XY plane parallel to the array, but can also identify the distance between the ...
Hao Ding +4 more
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The Next Decade of Seismic Oceanography: Possibilities, Challenges and Solutions
Frontiers in Marine Science, 2022 Seismic reflection profiling of thermohaline structure has the potential to transform our understanding of oceanic mixing and circulation. This profiling, which is known as seismic oceanography, yields acoustic images that extend from the sea surface to ...
Alex Dickinson, Kathryn L. Gunn
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High-fidelity deep functional photoacoustic tomography enhanced by virtual point sources
Photoacoustics, 2023 Photoacoustic tomography (PAT), a hybrid imaging modality that acoustically detects the optical absorption contrast, is a promising technology for imaging hemodynamic functions in deep tissues far beyond the traditional optical microscopy.
Yuqi Tang +8 more
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Monitoring the gelation of gellan gum with torsion rheometry and brightness-mode ultrasound
Current Directions in Biomedical Engineering, 2022 Gellan gum is a hydrogel with several applications in ultrasonic imaging, novel drug delivery, and tissue regeneration. As hydrogels are dynamic entities, their viscocelastic and therefore their acoustic properties change over time, which is of interest ...
Postema Michiel +4 more
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