Results 51 to 60 of about 18,139 (213)

Optical polarimetry of bipolar planetary nebulae [PDF]

open access: yes, 2001
Chapter 1 gives a brief review of the relevant aspects of stellar evolution leading to the formation of a planetary nebula. Included in this review is a discussion of the most important factors which appear to dictate the shaping and general ...
Booth, Paul Anthony
core  

Micro Pattern Gas Detector for X-ray polarimetry

open access: yes, 2003
We report on a new instrument that brings high efficiency to x-ray polarimetry, which is the last unexplored field of x-ray astronomy. It derives the polarization information from the tracks of the photoelectrons imaged by a finely subdivided gas pixel ...
BALDINI, LUCA   +12 more
core   +1 more source

X-ray polarimetry-timing

open access: yes, 2022
X-ray polarimetry-timing is the characterization of rapid variability in the X-ray polarization degree and angle. As for the case of spectral-timing, it provides causal information valuable for reconstructing indirect maps of the vicinity of compact ...
Ingram, Adam
core   +1 more source

Quantum estimation of the stokes vector rotation for a general polarimetric transformation

open access: yesNew Journal of Physics
Classical polarimetry is a well-established discipline with diverse applications across different branches of science. The burgeoning interest in leveraging quantum resources to achieve highly sensitive measurements has spurred researchers to elucidate ...
Ali Pedram   +4 more
doaj   +1 more source

Rotational Anisotropy Raman Spectrometer for High‐Sensitivity Crystallographic Symmetry Analysis

open access: yesLaser &Photonics Reviews, EarlyView.
We introduce rotational‐anisotropy Raman spectroscopy, an enhanced scheme that overcomes the limitations of traditional polarization‐resolved Raman techniques. This method reveals previously inaccessible phonon symmetries and resolves directional anisotropy of phonon‐polaritons in benchmark crystals, establishing a powerful new tool for characterizing ...
Di Cheng   +4 more
wiley   +1 more source

Polarimetry for Breast Cancer Imaging

open access: yes, 2019
Medical imaging is vital to the successful management of breast cancer. This thesis investigated polarimetry for breast cancer imaging. Polarimetry is the use of polarized light to study properties of matter.
Gribble, Adam
core   +2 more sources

Ultrathin Freestanding BiFeO3 Membranes Grown by Pulsed Laser Deposition

open access: yesSmall, EarlyView.
Ultrathin freestanding BiFeO3 membranes down to five‐unit cells are realized by pulsed laser deposition using a water‐soluble Sr3Al2O6 sacrificial layer. Strontium diffusion is revealed to drive the spontaneous formation of an Aurivillius‐like phase, while ultrathin SrRuO3 interlayers suppress interfacial intermixing, preserve polar tetragonality, and ...
Yifan Zhao   +4 more
wiley   +1 more source

Oil-Spill-Response-Oriented Information Products Derived From a Rapid-Repeat Time Series of SAR Images

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
New quantitative and semiautomated methods for analyzing oil slick evolution using a time series of L-band synthetic aperture radar (SAR) images with short repeat time are developed and explored. In this study, two methods that are complementary in terms
Martine M. Espeseth   +4 more
doaj   +1 more source

Synthesis of Chiral Gold Nanostructures on Gold‐Coral‐Coated Transparent Conductive Oxide Substrates via [AuCl4]– and Cysteine Interactions for Enhanced Chiral Sensing

open access: yesSmall, EarlyView.
We developed hierarchical chiral Au nanostructures on Au coral structures on transparent conductive oxide substrates using only electrochemical methods. By controlling the interaction between [AuCl4]– and cysteine, we successfully tuned the morphology and circular dichroism of the resulting Au nanostructures.
Kenta Nakagawa   +7 more
wiley   +1 more source

High‐purity X‐ray polarimetry at high energies for Mössbauer spectroscopy

open access: yesJournal of Synchrotron Radiation, EarlyView.
This work extends high‐purity X‐ray polarimetry into the 15–30 keV range, enabling polarization‐filtered synchrotron Mössbauer spectroscopy of higher‐energy nuclear resonances. A proof‐of‐principle experiment at 22.494 keV demonstrates a polarization purity of (1.2 ± 0.5) × 10−8, establishing the feasibility of the approach.High‐purity X‐ray ...
Berit Marx-Glowna   +9 more
wiley   +1 more source

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