Results 121 to 130 of about 5,296,113 (405)
EPJ Web of Conferences, 2013 Propagation of ultrashort broadband pulses through a multiply scattering media result in complex spatio-temporal speckle pattern. Using spectral pulse shaping, we demonstrate the spatially localized temporal recompression of the output speckle to the ...
Walmsley I.A. +5 more
doaj +1 more source
An Effective Computational Ghost Imaging Based on Noise Estimation and Elimination
IEEE Access, 2020 To improve the quality of ghost image, we propose an efficient computational ghost imaging method in this article. The primary idea is to estimate the noise value of the ghost image by analyzing and eliminating the source of the noise. The innovativeness
Xiaoxia Wang, Jiangtao Xi, Fengbao Yang
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Improving Dynamic Range of Speckle Correlation based Optical Lever by spatial multiplexing [PDF]
arXiv, 2019 Speckle correlation based optical levers SC OptLev possess attractive characteristics suitable for sensing small changes in the angular orientations of surfaces. In this study, we propose and demonstrate a spatial multiplexing technique for improving the dynamic range of SC OptLev.
arxiv
Assessment of biospeckle activity of lemon fruit [PDF]
, 2016 Bio-speckle can be used as a method for analysing the activity of biological materials illuminated with laser beam. Physically, bio-speckles are the result of scattering of coherent light on moving particles inside living tissue.
A. K., Nirala, Ansari, Mohammad Zaheer
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Advanced Engineering Materials, EarlyView.Spatial distribution of microstructure in Inconel 718 3D‐printed with bidirectional strategy with no rotation and chessboard strategy is studied. The former results in a highly ordered arrangement of coarse grains separated by line clusters of dislocation‐dense fine grains. This arrangement is disrupted by the chessboard strategy.
Jalal Al‐Lami +4 more
wiley +1 more source
Current Trends and Future Perspective for Cold Spray Metal‐Ceramic Composites
Advanced Engineering Materials, EarlyView.The use of cold spray (CS) technology for creating cermet deposits, combining ceramic and metallic components, is advancing rapidly. Cermets offer excellent temperature handling and erosion resistance for diverse applications. This review outlines the current state of the art, focusing on the deposition dynamics and strategies to optimize the ...
Romario A. Wicaksono +2 more
wiley +1 more source
Progress in high temperature speckle-shift strain measurement system [PDF]
A fast, easy to use speckle tracking system is under development for the speckle-shift strain measurement technique. Preliminary correlation tests on wire specimens show strong correlations of well-developed speckle patterns.
Barranger, John P., Lant, Christian T.
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Advanced Engineering Materials, EarlyView.Using novel probe‐based metrics, this study evaluates lattice structures on criteria critical to cellular solid optimization. Triply‐periodic minimal surface (TPMS) lattices outperform other lattices, offering more predictable mechanical behavior in complex design spaces and, as a result, higher performance in optimized models.
Firas Breish +2 more
wiley +1 more source
Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki, 2019 The characteristics of blood microcirculation in human tissues have been investigated by recording and analyzing a dynamic speckle pattern. Methodical approaches have been proposed for evaluating the obtained data in order to verify speckle measurements ...
N. D. Abramovich +3 more
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Speckle noise in direct-detection lidar systems [PDF]
The speckle noise is evaluated from some typical lidar systems. The governing equations are summarized. The mutual intensity function of the speckle pattern is calculated in terms of the laser radiation modes.
Gardner, C. S., Mecherle, G. S.
core +1 more source