Results 241 to 250 of about 5,472,881 (330)

Modular and Automated Workflow for Streamlined Raman Signal Analysis

open access: yesJournal of Raman Spectroscopy, EarlyView.
This study presents an automated workflow for preprocessing and analyzing Raman spectroscopy data, addressing key challenges such as noise suppression, baseline correction, and peak fitting using Voigt profiles. The method is validated on both synthetic and experimental spectra, demonstrating improved spectral fidelity and peak detection for biomedical
Mykyta Kizilov   +3 more
wiley   +1 more source

Efficient Robust Spontaneous Parametric Down‐Conversion via Detuning Modulated Composite Segments Designs

open access: yesLaser &Photonics Reviews, EarlyView.
Detuning modulated composite segmentation (DMCS) enables robust spontaneous parametric down‐conversion with sevenfold improved temperature stability compared to conventional designs, opening new possibilities for stable quantum photon sources. ABSTRACT Spontaneous parametric down conversion (SPDC) holds a pivotal role in quantum physics, facilitating ...
Muhammad Erew   +5 more
wiley   +1 more source

X-ray absorption spectroscopy of FeH+ to aid its identification in astrochemical environments.

open access: yesChem Commun (Camb)
Jin S   +10 more
europepmc   +1 more source

Vortex Beam Lasing from III‐V Nanowires Epitaxially Grown on Silicon‐on‐Insulator

open access: yesLaser &Photonics Reviews, EarlyView.
An epitaxially grown InGaAs nanowire photonic crystal laser on silicon‐on‐insulator is demonstrated to emit vortex beams carrying orbital angular momentum. Deforming the honeycomb lattice causes the band inversion effect and creates symmetry‐protected bound states in the continuum, enabling single‐mode lasing with a topological charge of −2 ...
Bogdan‐Petrin Ratiu   +7 more
wiley   +1 more source

Open and shared sustainable mega-constellation. [PDF]

open access: yesNatl Sci Rev
Yang J   +14 more
europepmc   +1 more source

Metasurfaces in Adaptive Optics: A New Opportunity in Optical Wavefront Sensing

open access: yesLaser &Photonics Reviews, EarlyView.
Wavefront sensing constitutes a critical component of adaptive optics systems, aimed at quantitatively measuring distorted wavefronts and enabling closed‐loop correction in optical setups. Metasurfaces, as planar optical elements composed of nanoscale structures, provide exceptional freedom in modulating multiple dimensions of the light field.
Rundong Fan   +3 more
wiley   +1 more source

Interpreting amide proton transfer‐weighted imaging contrast between normal and tumor brain tissues using the asymmetry analysis method at 4.7 T

open access: yesMagnetic Resonance in Medicine, EarlyView.
Abstract Purpose To provide a comprehensive analysis of the contributors to the amide proton transfer‐weighted (APTw) imaging signal using an asymmetry analysis method, as well as its contrast between tumors and the contralateral normal tissues at 4.7 T. Methods First, a signal model was developed to demonstrate the dependence of APTw signal on various
Malvika Viswanathan   +4 more
wiley   +1 more source

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