Results 101 to 110 of about 2,557,405 (292)

From Single to Multi‐Material 3D Printing of Glass‐Ceramics for Micro‐Optics

open access: yesSmall Methods, EarlyView.
This article explores advancements in two‐photon lithography (TPL) for fabricating high‐refractive‐index micro‐optics. It examines single and multi‐material 3D architectures in glass and ceramics (GLACEs), highlighting photoresin customization, critical fabrication conditions, and cross‐scale structural and optical characterization.
Joel Arriaga‐Dávila   +10 more
wiley   +1 more source

Hybrid correlation holography with a single pixel detector

open access: yes, 2017
The correlation holography reconstructs 3D objects as a distribution of two-point correlation of the random field detected by two dimensional detector arrays.
Singh, Rakesh Kumar
core   +1 more source

Deciphering structural complexity of brain, joint, and muscle tissues using Fourier ptychographic scattered light microscopy

open access: yesVIEW, EarlyView.
This study introduces Fourier ptychographic scattered light microscopy (FP‐SLM). It combines Fourier ptychographic microscopy (FPM), which images large fields of view with high resolution, and computational scattered light imaging (ComSLI), which visualizes densely interwoven fibers.
Simon E. van Staalduine   +3 more
wiley   +1 more source

Hybrid holographic non-destructive test system [PDF]

open access: yes, 1978
An automatic hybrid holographic non-destructive testing (HNDT) method and system capable of detecting flaws or debonds contained within certain materials are described.
Kurtz, R. L.
core   +1 more source

Ptychographic analysis of human bone marrow‐derived mesenchymal stem cell morphology: The impact of cell senescence

open access: yesJournal of Microscopy, EarlyView.
Abstract Mesenchymal stem cells (MSC) undergo replicative senescence, a state of irreversible cell cycle arrest that limits their utility in regenerative medicine applications. To identify novel markers of senescence useful to enhance the quality of MSC‐based therapies, we compared young and senescent human bone marrow‐derived mesenchymal stem cells ...
Lorenzo Anconelli   +6 more
wiley   +1 more source

Nonlinear Digital Holography

open access: yesBiomedical Optics and 3-D Imaging, 2010
We extend digital holography, and the techniques of computational imaging in general, to beam propagation in nonlinear media. Nonlinearity mixes high-frequency spatial modes with low-frequency ones, so that reconstruction results in super-resolution of the object.
Jason W. Fleischer, Christopher Barsi
openaire   +2 more sources

Learning-based nonparametric autofocusing for digital holography

open access: yes, 2018
In digital holography, it is crucial to extract the object distance from a hologram in order to reconstruct its amplitude and phase. This is known as autofocusing, which is conventionally solved by first reconstructing a stack of images, and then the ...
Zhenbo Ren, Zhimin Xu, E. Lam
semanticscholar   +1 more source

High sampling rate single-pixel digital holography system employing a DMD and phase-encoded patterns. [PDF]

open access: yesOptics Express, 2018
A single-pixel digital holography system with phase-encoded illumination using a digital micromirror device (DMD) as a spatial light modulator (SLM) is presented.
H. González   +5 more
semanticscholar   +1 more source

A Recording Structure for Extending the Detection Angle in Off-Axis Digital Holography

open access: yesIEEE Photonics Journal
In digital holography, the sampling of the object wavefront is determined by the spatial resolution of the image sensors, which limits the angle range of the object wavefront.
Yuanyuan Liu, Feiyan Hu, Qingwen Liu
doaj   +1 more source

Holography and its applications for industry 4.0: An overview

open access: yesInternet of Things and Cyber-Physical Systems, 2022
Industry 4.0 is a new stage in the organisation and control of the industrial value chain, interchangeably with the fourth industrial revolution. It has a broad vision with well-defined frameworks and reference designs, focusing on bridging physical ...
Abid Haleem   +4 more
doaj  

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