Articles with "speckle pattern" as a keyword



Speckle Pattern Analysis of PVK:rGO Composite Based Memristor Device

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Published in 2024 at "Macromolecular Materials and Engineering"

DOI: 10.1002/mame.202400213

Abstract: The memristors are expected to be fundamental devices for neuromorphic systems and switching applications. The device made of a sandwiched layer of poly(N‐ vinylcarbazole) and reduced graphene composite between asymmetric electrodes (ITO/PVK:rGO/Al) exhibits bistable resistive… read more here.

Keywords: pvk rgo; memristor; pattern analysis; device ... See more keywords

Numerical study on trapping and guiding of nanoparticles in a flow using scattering field of laser light

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Published in 2018 at "Optical Review"

DOI: 10.1007/s10043-017-0403-2

Abstract: Optical trapping and guiding using laser have been proven to be useful for non-contact and non-invasive manipulation of small objects such as biological cells, organelles within cells, and dielectric particles. We have numerically investigated so… read more here.

Keywords: trapping guiding; laser; numerical study; speckle pattern ... See more keywords

A Bio-Inspired Frequency-Based Approach for Tailorable and Scalable Speckle Pattern Generation

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Published in 2020 at "Experimental Mechanics"

DOI: 10.1007/s11340-020-00631-3

Abstract: Digital Image Correlation (DIC) is a length scale independent surface pattern matching and tracking algorithm capable of providing full field deformation measurements. The confident registration of this pattern within the imaging system becomes key to… read more here.

Keywords: pattern; frequency; speckle pattern; bio inspired ... See more keywords

An effective compressive computational ghost imaging with hybrid speckle pattern

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Published in 2020 at "Optics Communications"

DOI: 10.1016/j.optcom.2019.124470

Abstract: Abstract As an important factor to determine the quality of imaging, the sizes of the speckle pixel have gained increasing attention in ghost imaging. This paper proposes a new compressive computational ghost imaging which using hybrid speckle pattern to retrieve the… read more here.

Keywords: pattern; ghost imaging; speckle pattern; hybrid speckle ... See more keywords

Laser-light speckle formation for deflection-shape identification using digital image correlation

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Published in 2021 at "Mechanical Systems and Signal Processing"

DOI: 10.1016/j.ymssp.2021.107899

Abstract: Abstract The application of a speckle pattern to the surface of a structure is usually required for Digital Image Correlation (DIC)-based displacement identification. A speckle pattern generally requires the modification (e.g., painting) of the structure’s… read more here.

Keywords: surface; laser light; digital image; laser ... See more keywords

Multi-factor quality assessment of digital speckle pattern for speckle projection profilometry

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Published in 2024 at "Measurement Science and Technology"

DOI: 10.1088/1361-6501/ad646a

Abstract: The digital speckle pattern (DSP) is an essential component in the speckle projection profilometry (SPP) task, its quality directly affects the results of three-dimensional (3D) shape reconstruction. However, the SPP field lacks specialized numerical metrics… read more here.

Keywords: quality; speckle projection; digital speckle; projection profilometry ... See more keywords
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Characterization of surface roughness by speckle pattern—an experimental approach

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Published in 2021 at "Physics Education"

DOI: 10.1088/1361-6552/abd2cc

Abstract: Although it originates from the ancient Greeks, optics still arouses a lot of scientific interest, mainly due to the technological innovation associated with it. One of its most interesting applications is related to optical metrology… read more here.

Keywords: surface roughness; speckle pattern; physics; characterization surface ... See more keywords

Effect of Phase Relations on Speckle Pattern: Simulation and Measurement

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Published in 2019 at "IEEE Photonics Journal"

DOI: 10.1109/jphot.2019.2919240

Abstract: Speckle is an important phenomenon in various applications. It can be quantified by speckle contrast. However, at present, the influence of the phase relations among the various wavelengths on speckle contrast is rarely analyzed theoretically.… read more here.

Keywords: method; speckle contrast; speckle pattern; phase ... See more keywords

Length of Polarization-Correlation Based on Speckle Pattern for Optical Coherent Detection

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Published in 2024 at "IEEE Photonics Journal"

DOI: 10.1109/jphot.2024.3366398

Abstract: A length of polarization-correlation (LPC) based on speckle pattern of the non-uniform spatial polarization distribution is proposed and measured by using the classical measurement method of the Stokes polarization parameters for optical coherent detection. The… read more here.

Keywords: optical coherent; polarization; speckle pattern; coherent detection ... See more keywords
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Structural Health Monitoring Suitable for Airborne Components Using the Speckle Pattern in Plastic Optical Fibers

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Published in 2017 at "IEEE Sensors Journal"

DOI: 10.1109/jsen.2017.2715258

Abstract: Structural health monitoring (SHM) is a key factor for the correct operation in large dimension structures. In this paper, we propose and demonstrate the application of a distributed optical sensor, suitable for SHM, based on… read more here.

Keywords: health monitoring; speckle pattern; structural health; optical fibers ... See more keywords

Photothermal Radar Shearography: A Novel Transient-Based Speckle Pattern Interferometry for Depth-Tomographic Inspection

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Published in 2022 at "IEEE Transactions on Industrial Informatics"

DOI: 10.1109/tii.2021.3124576

Abstract: As an increasingly recognized optical interferometric technique for nondestructive testing and evaluation, shearography has attracted extensive interest in various industrial applications. However, it suffers from the ignorance of the whole process of dynamic surface deformation… read more here.

Keywords: depth; dynamic surface; photothermal radar; speckle pattern ... See more keywords