Results 41 to 50 of about 542 (178)

Metasurface‐Enabled Single‐Shot Intensity‐and‐Phase‐Interrogation Surface‐Plasmon‐Resonance Microscopy

open access: yesLaser &Photonics Reviews, EarlyView.
A metasurface‐enabled full‐Stokes polarimeter is integrated with phase‐interrogated surface plasmon resonance microscopy to enable single‐shot recovery of intensity and differential phase. The non‐interferometric platform supports quantitative refractive‐index and thickness mapping, wavelength‐resolved sensing, and dynamic multi‐channel monitoring ...
Houxin Fan   +5 more
wiley   +1 more source

NMR‐Based Structural Elucidation of a New Dihydroisocoumarin and Related Polyketides From a Mangrove‐Derived Fusarium sp.

open access: yesMagnetic Resonance in Chemistry, EarlyView.
Integration of bioactivity screening and LC–MS/MS metabolomics enabled the discovery of a new antibacterial dihydroisocoumarin from Fusarium sp. IQ‐1921. NMR‐based structural elucidation identified five related metabolites, with the new compound 1 showing the broadest activity against multidrug‐resistant bacteria. ABSTRACT Antimicrobial resistance (AMR)
Evelyn García‐Oceguera   +4 more
wiley   +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

Imaging polarimetry in the LWIR with microgrid polarimeters

open access: yesEPJ Web of Conferences, 2010
Microgrid polarimeters have emerged over the past decade as a viable tool for performing real-time, highly accurate polarimetric imagery. A microgrid polarimeter operates by integrating a focal plane array (FPA) with an array of micropolarizing optics.
Tyo J.S.
doaj   +1 more source

Searching for Axion-Like Particles with X-ray Polarimeters

open access: yesGalaxies, 2018
X-ray telescopes are an exceptional tool for searching for new fundamental physics. In particular, X-ray observations have already placed world-leading bounds on the interaction between photons and axion-like particles (ALPs).
Francesca Day, Sven Krippendorf
doaj   +1 more source

A Glass Polarimeter [PDF]

open access: yesScientific American, 1918
n ...
Shook, G. A., Kent, C. V.
openaire   +2 more sources

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

Calibration Methods of a Portable Polarizing System for Monitoring Optically Inhomogeneous Media

open access: yesComputation, 2022
Theoretical aspects of methods for calibrating Stokes polarimeters are considered. The prospects and opportunities for implementing the presented methods for calibrating portable polarization systems used in biology and medicine are determined.
Cong T. Nguyen   +7 more
doaj   +1 more source

A far infrared polarimeter

open access: yesNew Astronomy, 2004
17 pages, 12 figures, 1 table, submitted to New ...
CATALANO, Andrea   +8 more
openaire   +3 more sources

Previously Undescribed Esters and an Alkaloid From Trollius chinensis With Anti‐Inflammatory and Cytotoxic Activities

open access: yesChemistry &Biodiversity, Volume 23, Issue 11, November 2026.
Ten new compounds (9 esters, 1 alkaloid) were isolated from the flowers of Trollius chinensis Bunge, and all isolated compounds were evaluated in vitro for cytotoxicity against HeLa, HepG2, HCT 116 cells, and NO inhibition in RAW 264.7 macrophages, enriching structural diversity and providing a chemical basis for further study. . ABSTRACT In this study,
Mei‐Li Guo   +6 more
wiley   +1 more source

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