Results 71 to 80 of about 237,317 (388)

Methods for Determination of Mean Speckle Size in Simulated Speckle Pattern

open access: yesMeasurement Science Review, 2014
This paper deals with computation of mean speckle size in a speckle pattern generated through a numerical simulation of speckle after reflection of a Gaussian beam off a rough object’s surface. Within this simulation various speckle patterns are obtained
Hamarová I.   +3 more
doaj   +1 more source

The very compact and efficient speckle suppression device for laser picoprojector

open access: yesSemiconductor Physics, Quantum Electronics & Optoelectronics, 2019
The original, simple and efficient speckle suppression method has been proposed for laser picoprojector. The method uses simple 1D DOE structure on flexible film roll up in loop for speckle suppression.
I.V. Gorbov
doaj   +1 more source

Dynamic Speckle Holography

open access: yesPhysical Review Letters, 2021
We introduce dynamic speckle holography, a new technique that combines imaging and scattering to measure three-dimensional maps of displacements as small as ten nanometers over several centimeters, greatly extending the capabilities of traditional imaging systems.
S. Aime   +3 more
openaire   +3 more sources

Observation of Intensity-Intensity Correlation Speckle Patterns with Thermal Light

open access: yes, 2014
In traditional Hanbury Brown and Twiss (HBT) schemes, the thermal intensity-intensity correlations are phase insensitive. Here we propose a modified HBT scheme with phase conjugation to demonstrate the phase-sensitive and nonfactorizable features for ...
Al-Amri, M.   +2 more
core   +1 more source

Real-time monitoring of bacterial growth kinetics in suspensions using laser speckle imaging

open access: yesScientific Reports, 2020
In microbiology, monitoring the growth of any microorganism in culture is important for studying and optimizing the growth kinetics, the biomass and the metabolite production.
Hadi Loutfi   +6 more
semanticscholar   +1 more source

MuLoG, or How to Apply Gaussian Denoisers to Multi-Channel SAR Speckle Reduction? [PDF]

open access: yesIEEE Transactions on Image Processing, 2017
Speckle reduction is a longstanding topic in synthetic aperture radar (SAR) imaging. Since most current and planned SAR imaging satellites operate in polarimetric, interferometric, or tomographic modes, SAR images are multi-channel and speckle reduction ...
Charles-Alban Deledalle   +3 more
semanticscholar   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Feasibility of Optical Coherence Tomography (OCT) for Intra-Operative Detection of Blood Flow during Gastric Tube Reconstruction

open access: yesSensors, 2018
In this study; an OCT-based intra-operative imaging method for blood flow detection during esophagectomy with gastric tube reconstruction is investigated.
Sanne M. Jansen   +9 more
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Observations of Binary Stars with the Differential Speckle Survey Instrument. II. Hipparcos Stars Observed in 2010 January and June [PDF]

open access: yes, 2011
The results of 497 speckle observations of Hipparcos stars and selected other targets are presented. Of these, 367 were resolved into components and 130 were unresolved.
Anderson, Lisa M.   +6 more
core   +2 more sources

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