Results 291 to 300 of about 839,047 (377)

Simulation of Hollow‐Core Photonic Crystal Fibre‐Based Photothermal Spectral C2H2 Gas Sensor

open access: yesHigh Voltage, EarlyView.
ABSTRACT Fault characteristic gas analysis is one of the important methods for monitoring the operating status of power equipment. This study presents the construction of a simulation model for a hollow‐core photonic crystal fibre (HC‐PCF)‐based photothermal spectroscopy gas detection system.
Fuping Zeng   +5 more
wiley   +1 more source

Cooperativity of Electron Transfer Coupled Spin Transitions in a Tetranuclear Fe/Co Prussian Blue Analogue Revealed by Ultrafast Spectroscopy

open access: yesAngewandte Chemie, Volume 137, Issue 27, July 1, 2025.
Ultrafast pump‐probe spectroscopies show that irradiation of a square Fe/Co Prussian blue analogue induces electron transfer within one Fe–Co subunit followed by fast spin crossover, and coupled equilibria between all states trigger a second electron transfer coupled to spin crossover in the other Fe–Co subunit on a ns timescale.
Jan‐Hendrik Borter   +8 more
wiley   +2 more sources

Resonance‐Enhanced Multiphoton Ionization Spectroscopy of Monocyclic and Polycyclic Aromatic Hydrocarbons in the Gas Phase

open access: yesRapid Communications in Mass Spectrometry, Volume 39, Issue 19, 15 October 2025.
ABSTRACT Rationale Aromatic hydrocarbons (AHs) and polycyclic aromatic hydrocarbons (PAHs) pose significant risks to human health and the environment due to their toxic and carcinogenic properties. These depend strongly on molecular structure, with even isomers exhibiting different characteristics.
Carolin Schwarz   +6 more
wiley   +1 more source

Experimental Kinetic Study of the Reactions of Hydroxyl Radicals With Three Oxymethylene Ethers and With 1,3,5‐Trioxane, Tetrahydrofuran, and Tetrahydrofuran‐d8

open access: yesInternational Journal of Chemical Kinetics, Volume 57, Issue 8, Page 497-506, August 2025.
ABSTRACT Polyoxymethylene dimethyl ethers, CH3O(CH2O)nCH3 with n ≥ 1 (abbreviated in the literature also as OME‐n, PODEn, POMDMEn, or OMDMEn) are currently discussed as renewable fuels. Despite fuel + OH reactions are crucial for the combustion chemistry and atmospheric degradation of fuels, experimental kinetic data on OME‐n + OH do not exist in the ...
Miu G. Mach   +5 more
wiley   +1 more source

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