Results 151 to 160 of about 1,266,780 (349)

Characterization of Binder Materials from Lithium Ion Batteries by Fingerprint Analysis with Pyrolysis‐Gas Chromatography‐Mass Spectrometry

open access: yesAdvanced Materials Technologies, EarlyView.
This study presents a pyrolysis‐gas chromatography‐mass spectrometry (PY‐GC‐MS) method for characterizing binder materials from complex lithium ion battery (LIB) samples. Multishot pyrolysis is used to analyze electrolyte components, solid electrolyte interphase (SEI)‐related products and binder materials. Changes of the pyrolysis fingerprints of state‐
Dennis Kessen   +4 more
wiley   +1 more source

Unveiling Ultrafast Spin‐Valley Dynamics and Phonon‐Mediated Charge Transfer in MoSe2/WSe2 Heterostructures

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This study reveals the potential to manipulate spin‐valley polarization dynamics in MoSe2/WSe2 heterostructures by quantifying different scattering processes following selective photoexcitation. The results show that these heterostructures enable ultrafast valley‐selective charge transfer, with phonon scattering playing a significant role in the ...
Julian Wagner   +9 more
wiley   +1 more source

Tailoring Optical and Vibrational Properties by Bond Confinement: The Case of Metavalent Chalcogenide and Pnictogen Thin Films

open access: yesAdvanced Optical Materials, EarlyView.
This perspective explores how intrinsic confinement effects in metavalent chalcogenide and pnictogen thin films alter optical and vibrational properties. By comparing thickness‐dependent effects across prototypical systems, this work highlights the role of unconventional bonding in shaping coherent phonon dynamics and dielectric functions, offering new
Felix Hoff, Matthias Wuttig
wiley   +1 more source

Phase Topology Stability of an Optical Vortex via an Electrically Controlled Twist‐Planar Oriented Liquid Crystal Fresnel Lens

open access: yesAdvanced Optical Materials, EarlyView.
A simple and efficient method for determining the stability of optical vortices via Fourier transform using a conventional spherical lens is presented. The theoretical and experimental results demonstrate a practical approach to directly and unambiguously measure the magnitude and sign of the topological charge of a beam without altering an ...
Elena Melnikova   +5 more
wiley   +1 more source

Dynamic properties of the multimalware attacks in wireless sensor networks: Fractional derivative analysis of wireless sensor networks

open access: yesOpen Physics
Due to inherent operating constraints, wireless sensor networks (WSNs) need help assuring network security. This problem is caused by worms entering the networks, which can spread uncontrollably to nearby nodes from a single node infected with computer ...
Tahir Hassan   +4 more
doaj   +1 more source

Directional Light Scattering In Mie‐Resonant Si Particles With Ultra‐Thin Au Shells

open access: yesAdvanced Optical Materials, EarlyView.
Si@Au core‐shell particles have been produced to study their ability to directionally scatter light. We found that the heavily reported particulate shells do not overlap the electric and magnetic dipoles well, where continuous shells have better overlap. Experimental analyses, including nanomaterial characterization, EELS and single‐particle dark‐field
Emmanuel O. Idowu   +12 more
wiley   +1 more source

Relative Entropy of Coherence Quantifies Performance in Bayesian Metrology

open access: yesPRX Quantum
The ability of quantum states to be in superposition is one of the key features that sets them apart from the classical world. This “coherence” is rigorously quantified by resource theories, which aim to understand how such properties may be exploited in
Ruvi Lecamwasam   +5 more
doaj   +1 more source

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