scholarly journals Experimental and numerical analysis of ballistic and scattered light using femtosecond optical Kerr gating: a way for the characterization of strongly scattering media

2012 ◽  
Vol 20 (9) ◽  
pp. 9604 ◽  
Author(s):  
François-Xavier d’Abzac ◽  
Myriam Kervella ◽  
Laurent Hespel ◽  
Thibault Dartigalongue
Keyword(s):  
Numerical Analysis ◽  
Scattered Light ◽  
Scattering Media

Steady-state Characterization of LLC-based Single-Stage AC/DC Converter Based on Numerical Analysis

2021 ◽  
pp. 1-1
Author(s):  
Xiang Li ◽  
Liuniu Guo ◽  
Tianchen Lang ◽  
Daorong Lu ◽  
Khalil Alluhaybi ◽  
...  
Keyword(s):  
Steady State ◽  
Numerical Analysis ◽  
Single Stage

X-ray topo-tomography studies of linear dislocations in silicon single crystals

2018 ◽  
Vol 51 (6) ◽  
pp. 1616-1622 ◽  
Author(s):  
Victor Asadchikov ◽  
Alexey Buzmakov ◽  
Felix Chukhovskii ◽  
Irina Dyachkova ◽  
Denis Zolotov ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
High Resolution ◽  
Single Crystals ◽  
Complete Characterization ◽  
Reconstruction Technique ◽  
Algebraic Reconstruction Technique ◽  
X Ray ◽  
Laboratory Setup ◽  
Simultaneous Algebraic Reconstruction Technique

This article describes complete characterization of the polygonal dislocation half-loops (PDHLs) introduced by scratching and subsequent bending of an Si(111) crystal. The study is based on the X-ray topo-tomography technique using both a conventional laboratory setup and the high-resolution X-ray image-detecting systems at the synchrotron facilities at KIT (Germany) and ESRF (France). Numerical analysis of PDHL images is performed using the Takagi–Taupin equations and the simultaneous algebraic reconstruction technique (SART) tomographic algorithm.

scholarly journals Measurements of the nonlinear refractive index in scattering media using the Scattered Light Imaging Method - SLIM

2015 ◽  
Vol 23 (15) ◽  
pp. 19512 ◽  
Author(s):  
Kelly C. Jorge ◽  
Hans A. García ◽  
Anderson M. Amaral ◽  
Albert S. Reyna ◽  
Leonardo de S. Menezes ◽  
...  
Keyword(s):  
Refractive Index ◽  
Nonlinear Refractive Index ◽  
Scattered Light ◽  
Imaging Method ◽  
Scattering Media

Benthic Habitats and the Effects of Fishing

2005 ◽  
Keyword(s):  
Scattered Light ◽  
Fish Habitat ◽  
Laser Line ◽  
Underwater Imaging ◽  
Benthic Habitats ◽  
Sea Floor ◽  
Line Scan ◽  
Imaging Sensors ◽  
Laser Line Scan

Laser-based underwater imaging sensors have been developed and matured in the last decade that provide high resolution optical imagery of the sea floor. Laser Line Scan (LLS) and Streak Tube Imaging Lidar (STIL) have been particularly successful. A prototype Fluorescence Imaging Laser Line Scan (FILLS) sensor has been deployed in several underwater environments, yielding highresolution (~1 cm pixel size) imagery of the associated benthic habitats. The prototype FILLS sensor illuminates the sea floor with 488 nm laser light, and constructs four independent images from light collected at 488 nm, 520 nm, 580 nm, and 685 nm, respectively. The 488 nm image is formed from elastically scattered light (i.e., light scattered with no change in photon energy), while the other images are formed by inelastically scattered light. (The FILLS sensor is routinely operated during nighttime hours so that ambient illumination is negligible). Fluorescence is the primary physical mechanism giving rise to the inelastically scattered light sensed by FILLS. Coral reef environments produce particularly strong (and spectacular!) fluorescence imagery. FILLS was developed primarily for the detection, classification, and identification of man-made objects in underwater environments. In addition it can serve admirably for the characterization of underwater habitats. Examples of FILLS imagery relevant to fish habitat evaluation will be presented.

scholarly journals Thermal characterization of a plate heated by a multi-jet system

2018 ◽  
Vol 19 (5) ◽  
pp. 503
Author(s):  
Amar Zerrout ◽  
Ali Khelil ◽  
Larbi Loukarfi
Keyword(s):  
Temperature Distribution ◽  
Numerical Analysis ◽  
Flat Plate ◽  
Turbulence Model ◽  
Thermal Characterization ◽  
Experimental Results ◽  
Experimental Device ◽  
Inlet Temperature ◽  
Thermal Transfer

This study is an experimental and numerical analysis of the influence from changes in the conditions of inputs temperature and velocity on the behavior thermal and dynamic of a multi-jet swirling system impacting a flat plate. The experimental device comprising three diffusers arranged in line, of diameter D aloof 2D between the axes of their centers, impinging the plate perpendicularly at an impact height H = 6D. The swirl is obtained by a generator (swirl) of composed 12 fins arranged at 60° relative to the vertical placed just at the exit of the diffuser. By imposing the temperature and velocity for three input conditions with three studied configurations. The paper deals with find the configuration that optimizes the best thermal homogenization. The results show that the configuration having an equilibrated inlet temperature (T, T, T) is derived from a good temperature distribution on the baffle wall and a better thermal transfer from the plate. The system was numerically simulated by the fluent code by using the turbulence model (k–ε). This last has yielded results accorded to those experimental results.

scholarly journals Optical Characterization of Homogeneous and Heterogeneous Intralipid-Based Samples

2020 ◽  
Vol 10 (18) ◽  
pp. 6234
Author(s):  
Ines Delfino ◽  
Maria Lepore ◽  
Rosario Esposito
Keyword(s):  
Optical Properties ◽  
Light Scattering ◽  
Scattered Light ◽  
Industrial Applications ◽  
Point Of View ◽  
Turbid Media ◽  
Time Resolved ◽  
Propagation Of Light ◽  
First Time

Different scattering processes take place when photons propagate inside turbid media. Many powerful experimental techniques exploiting these processes have been developed and applied over the years in a large variety of situations from fundamental and applied research to industrial applications. In the present paper, we intend to take advantage of Static Light Scattering (SLS), Dynamic Light Scattering (DLS), and Time-Resolved Transmittance (TRT) for investigating all the different scattering regimes by using scattering suspensions in a very large range of scatterer concentrations. The suspensions were prepared using Intralipid 20%, a material largely employed in studies of the optical properties of turbid media, with concentrations from 10−5% to 50%. By the analysis of the angular and temporal dependence of the scattered light, a more reliable description of the scattering process occurring in these samples can be obtained. TRT measurements allowed us to obtain information on the reduced scattering coefficient, an important parameter largely used in the description of the optical properties of turbid media. TRT was also employed for the detection of inclusions embedded in Intralipid suspensions, by using a properly designed data analysis. The present study allowed us to better elucidate the dependence of scattering properties of Intralipid suspensions in a very large concentration range and the occurrence of the different scattering processes involved in the propagation of light in turbid media for the first time to our knowledge. In so doing, the complementary contribution of SLS, DLS, and TRT in the characterization of turbid media from an optical and structural point of view is strongly evidenced.

THE CHARACTERIZATION OF LACTOBACILLI FROM CHEDDAR CHEESE: II. A NUMERICAL ANALYSIS OF THE DATA BY MEANS OF AN ELECTRONIC COMPUTER

1964 ◽  
Vol 10 (5) ◽  
pp. 757-762 ◽  
Author(s):  
M. M. Hauser ◽  
R. E. Smith
Keyword(s):  
Numerical Analysis ◽  
Numerical Methods ◽  
Lactobacillus Casei ◽  
Electronic Computer ◽  
Cheddar Cheese ◽  
Lactobacillus Brevis ◽  
Computer Technique ◽  
Group Relationships ◽  
Biochemical Features

Data for 59 lactobacilli isolated from Canadian Cheddar cheese and 9 named species, previously characterized on the basis of morphological, cultural, and biochemical features, were analyzed by the Adansonian numerical methods of Sneath. Results confirmed the validity of groups, originally designated as Lactobacillus plantarum, Lactobacillus casei, Lactobacillus brevis, and Lactobacillus fermenti types. The computer technique provided numerical estimates of strain and group relationships, emphasizing the extreme heterogeneity of the groups.

scholarly journals Optical characterization of optofluidic waveguides using scattered light imaging

2011 ◽  
Vol 284 (16-17) ◽  
pp. 3980-3982 ◽  
Author(s):  
Micah H. Jenkins ◽  
Brian S. Phillips ◽  
Yue Zhao ◽  
Matthew R. Holmes ◽  
Holger Schmidt ◽  
...  
Keyword(s):  
Scattered Light ◽  
Optical Characterization ◽  
Optofluidic Waveguides
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