Results 11 to 20 of about 841,302 (305)

A novel Raman spectroscopic method for detecting traces of blood on an interfering substrate

open access: yesScientific Reports, 2023
Traces of body fluids discovered at a crime scene are a primary source of DNA evidence. Raman spectroscopy is a promising universal technique for identifying biological stains for forensic purposes.
Yury V. Kistenev   +4 more
doaj   +1 more source

Multifunctional laser speckle imaging

open access: yesBiomedical Optics Express, 2020
We have developed a multi-functional laser speckle imaging system, which can be operated in both the surface illumination laser speckle contrast imaging (SI-LSCI) mode and the line scan laser speckle contrast imaging (LS-LSCI) mode. The system has been applied to imaging the chicken embryos to visualize both the blood flow and morphological details of ...
E. Du   +3 more
openaire   +2 more sources

Underwater environment laser ghost imaging based on Walsh speckle patterns

open access: yesFrontiers in Physics, 2023
Underwater imaging is a challenging task because of the effects of scattering and absorption in water. Ghost imaging (GI) has attracted increasing attention because of its simple structure, long range, and achievability under weak light intensity.
Mochou Yang, Yi Wu, Guoying Feng
doaj   +1 more source

Set lasers to image [PDF]

open access: yesLab Animal, 2020
Engineers and neuroscientists working to advance multiphoton microscopy are pushing the depths, speeds, and scales of in vivo imaging.
openaire   +2 more sources

Use of Biospeckle Imaging to Measure Mechanical Properties of Apples in the Non-invasive Manner [PDF]

open access: yesJournal of Agricultural Machinery, 2019
Introduction The texture of fresh fruit is determined by the structural and mechanical properties of tissue. It depends on climate, maturity, variety and postharvest condition. During ripening, due to loss of turgor, degradation of starch and cell walls,
O Omidi-Arjenaki   +3 more
doaj   +1 more source

Laser speckle reduction based on angular diversity induced by Piezoelectric Benders [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2013
Speckle reduction techniques have been investigated in display systems with coherent light sources. We propose a simple but efficient method to reduce speckle via two fast vibrating piezoelectric benders.
Ouyang G.   +4 more
doaj   +1 more source

Laser Based Mid-Infrared Spectroscopic Imaging – Exploring a Novel Method for Application in Cancer Diagnosis [PDF]

open access: yes, 2011
A number of biomedical studies have shown that mid-infrared spectroscopic images can provide both morphological and biochemical information that can be used for the diagnosis of cancer.
McCrow, Andrew, McCrow, Andrew
core   +1 more source

Underwater Laser Imaging

open access: yesPolish Hyperbaric Research, 2021
Abstract Attenuation of light in the ocean ranges widely depending on the environment and is especially significant in optical remote sensing. Absorption of light by ocean water limits the range light can travel before being extinguished. The complex interactions of scattering light and ocean water often lead to distortions of the signal
Shelby Metoyer, Darek Bogucki
openaire   +1 more source

Semiconductor Laser Multi-Spectral Sensing and Imaging

open access: yesSensors, 2010
Multi-spectral laser imaging is a technique that can offer a combination of the laser capability of accurate spectral sensing with the desirable features of passive multispectral imaging.
Han Q. Le, Yang Wang
doaj   +1 more source

Use of infrared hyperspectral imaging as an aid for paint identification

open access: yesJournal of Spectral Imaging, 2016
Art authentication is a complicated process that often requires the extensive study of high value objects. Although a series of non-destructive techniques is already available for art scientists, new techniques, extending current possibilities, are still
A. Polak   +6 more
doaj   +1 more source

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