Results 51 to 60 of about 475,981 (282)

Deconvolution Techniques in Optical Coherence Tomography: Advancements, Challenges, and Future Prospects

open access: yesLaser &Photonics Reviews, EarlyView.
This review explores deconvolution techniques in optical coherence tomography (OCT), addressing resolution degradation from point‐spread functions (PSF). It reviews foundational principles (e.g., Richardson‐Lucy deconvolution) to advanced AI‐driven methods, emphasizing clinical translation and interdisciplinary collaboration. Real‐world implementations
Syeda Aimen Abbasi   +6 more
wiley   +1 more source

Microscopic Characterization of Modified Phenol-Formaldehyde Resin Penetration of Bamboo Surfaces and its Effect on Some Properties of Two-Ply Bamboo Bonding Interface

open access: yesBioResources, 2014
The bonding interface between bamboo elements and adhesives is presumed to be significantly influenced by the degree of adhesive penetration into the porous network of interconnected cells of bamboo surfaces.
Mingjie Guan, Cheng Yong, Lu Wang
doaj   +1 more source

MENENTUKAN KOEFISIEN EKSPANSI LINIER MATERIALKUNINGAN DENGAN TEKNIK ESPI [PDF]

open access: yes, 2017
Have performed experiments to determine the coefficient of linear expansion of brass rod with a technique ESPI (Electronic Speckle Pattern Interferometry).
Astuti, Edi Tri
core   +1 more source

Facile Projection of Spatially Resolved Refractive Index Modulation in Monolayer MoS2 via Light Phase Changes

open access: yesSmall, EarlyView.
The modulation of refractive index (n) is visualized by using hyperspectral phase microscopy, where light‐matter interaction is maximized through substrate engineering. In specific wavelengths and oxide thickness of the substrate, the phase difference can directly reflect the refractive index.
Yoojoong Han   +7 more
wiley   +1 more source

Full-field interferometry using infinity corrected optics [PDF]

open access: yes, 2015
In this paper the construction of full-field (imaging) interferometers using infinity corrected optics commonly used in microscopy is discussed, with an emphasis on self-mixing interferometry configurations where the imaged light field is mixed with ...
Charrett, Thomas O. H., Tatam, Ralph P.
core   +1 more source

Experimental and computational methods for studying relaxation of aluminosilicate glasses: A review

open access: yesJournal of the American Ceramic Society, Volume 108, Issue 6, June 2025.
Abstract Relaxation plays a critical role in all glasses, especially those that undergo heat treatments for industrial applications. However, the fundamental mechanisms of relaxation are still poorly understood, especially in industrially relevant glasses such as aluminosilicate systems.
Brittney M. Hauke   +2 more
wiley   +1 more source

Measurement of heat treatment induced residual stresses by using ESPI combined with hole-drilling method [PDF]

open access: yesChina Foundry, 2010
In this study, residual stresses in heat treated specimen were measured by using ESPI (Electronic Speckle-Pattern Interferometry) combined with the hole-drilling method.
Jie Cheng, Si-Young Kwak, Ho-Young Hwang
doaj  

Full field residual stress determination using hole-drilling and electronic speckle pattern interferometry (ESPI) with phase unwrapping method

open access: yesEPJ Web of Conferences, 2010
The hole-drilling strain gauge technique has become a standard method in measuring residual stresses [1]. Moiré interferometry combining hole-drilling method opens additional opportunity for full-field residual stress measurement using optical ...
Lyu B.I., Aoh J.N.
doaj   +1 more source

Strain Mapping by Digital laser Speckle Correlation, Validation and Comparison [PDF]

open access: yesarXiv, 2020
This Paper introduces a new Non-Contact, Optical method for displacement measurements, and strain mapping as well as comparing it to traditional Digital Image correlation (DIC) and laser interferometry measurement method. This Method incorporates diffracted laser speckle images from the surfaces through DIC to track displacement and locate strain ...
arxiv  

Singularities in Speckled Speckle: Screening [PDF]

open access: yes, 2008
We study screening of optical singularities in random optical fields with two widely different length scales. We call the speckle patterns generated by such fields speckled speckle, because the major speckle spots in the pattern are themselves highly speckled.
arxiv   +1 more source

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