Results 61 to 70 of about 4,265 (180)

Multi-Wavelength Polarimetry of Isolated Neutron Stars

open access: yesGalaxies, 2018
Isolated neutron stars are known to be endowed with extreme magnetic fields, whose maximum intensity ranges from 10 12 – 10 15 G, which permeates their magnetospheres. Their surrounding environment is also strongly magnetized, especially in
Roberto P. Mignani
doaj   +1 more source

Circular Differential Scattering Spectroscopy for the Characterization of Single Chiral Nanostructures: Fundamentals, Development, and Perspectives

open access: yesNational Materials, Volume 1, Issue 1, Page 48-71, July 2026.
Circular differential scattering (CDS) spectroscopy relies on a modified dark‐field optical microscope to study single chiral nanostructures, avoiding the averaging effects of ensemble methods. Recently achieving improved detection limits of 1.5%, this robust technique analyzes plasmonic chirality and molecular interactions, with the future goal of ...
Hao Li   +3 more
wiley   +1 more source

Electronic Instrumentation in Chemical Analysis: A Case Study (and Other Examples) From a 20th‐Century “Revolution”

open access: yesNatural Sciences, Volume 6, Issue 3, July 2026.
A review of advances in chemical analysis brought about by electronic instrumentation. The techniques, and their applications, demonstrate how, collectively, they played a crucial role in transforming the laboratory landscape. If not a relatively recent revolution in one branch of science, it was certainly a transformation.
Anthony S. Travis
wiley   +1 more source

Compensation of Dispersion in Sinuous Antennas for Polarimetric Ground Penetrating Radar Applications

open access: yesRemote Sensing, 2019
In order to improve the accuracy of subsurface target classification with ground penetrating radar (GPR) systems, it is desired to transmit and receive ultra-wide band pulses with varying combinations of polarization (a technique referred to as ...
Dylan A. Crocker, Waymond R. Scott
doaj   +1 more source

Investigation into Different Polarimetric Features for Sea Ice Classification Using X-Band Synthetic Aperture Radar

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016
Satellite-borne synthetic aperture radar has proven to be a valuable tool for sea ice monitoring for more than two decades. In this study, we examine the performance of an automated sea ice classification algorithm based on polarimetric TerraSAR-X images.
Rudolf Ressel   +4 more
doaj   +1 more source

Polarization-Based Digital Histology of Human Skin Biopsies Assisted by Deep Learning

open access: yesPhotonics
Mueller polarimetry has proven to be a powerful optical technique to complement medical doctors in their conventional histology analysis. In this work, various degenerative and malignant human skin lesions were evaluated ex vivo using imaging Mueller ...
Deyan Ivanov   +7 more
doaj   +1 more source

Jet Precession in Gamma-Ray Bursts

open access: yesUniverse
Jet precession is thought to be a ubiquitous phenomenon in astronomical events of various scales, including gamma-ray bursts (GRBs). If GRB jets undergo precession, periodic features might be introduced into their light curves.
Bao-Quan Huang, Tong Liu
doaj   +1 more source

Using the CLEAN Method in Three-Dimensional Polarimetric ISAR Imaging Based on Volumetric Scattering Points [PDF]

open access: yesJournal of Electromagnetic Engineering and Science
We developed a new technique for generating three-dimensional monostatic inverse synthetic aperture radar (ISAR) images using various types of polarimetric information on targets.
Hyung-Jun Lee   +2 more
doaj   +1 more source

Coupling a Neural Network-Based forward Model and a Bayesian Inversion Approach to Retrieve Wind Field from Spaceborne Polarimetric Radiometers

open access: yesSensors, 2008
A simulation study to assess the potentiality of sea surface wind vector estimation based on the approximation of the forward model through Neural Networks and on the Bayesian theory of parameter estimation is presented.
Luca Pulvirenti   +2 more
doaj   +1 more source

Evaluation of retinal nerve fiber layer thickness measurement following laser in situ keratomileusis using scanning laser polarimetry

open access: yesIndian Journal of Ophthalmology, 2007
Aim: To evaluate the effect of laser-assisted in situ keratomileusis (LASIK) on the measurement of retinal nerve fiber layer thickness by scanning laser polarimetry using customized corneal compensation in myopes.
Dada Tanuj   +5 more
doaj  

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