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Structural, optical, and electrical properties of Cu-doped NiO films synthesized by spray pyrolysis for potential gas sensing applications
Eka Nurfani, Grace Grace, Mahardika Yoga Darmawan, Resti Marlina, Jumaeda Jatmika, Asnan Rinovian, Aditya Rianjanu
https://arxiv.org/abs/2509.24197

Structural, optical, and electrical properties of Cu-doped NiO films synthesized by spray pyrolysis for potential gas sensing applications
Cu-doped NiO thin films were deposited on ITO substrates via spray pyrolysis at 450 °C for 1.5 minutes. XRD confirmed a cubic NiO structure, with Cu incorporation reducing crystallite size, increasing interplanar spacing, and expanding the lattice parameter, indicating successful substitution of Cu ions. Optical analysis showed a slight bandgap reduction from 3.70 to 3.65 eV, while PL revealed lower emission intensity, suggesting enhanced defect states and suppressed carrier recombination. Ram…

Comprehensive Structural Characterization of Charged Polymers Involved in Moisture-Driven Direct Air Capture
Gayathri Yogaganeshan, Rui Zhang, Raimund Fromme, Sharang Sharang, Jamie Ford, Douglas M Yates, Marlene Velazco Medel, Martin Uher, Justin Flory, Jennifer Wade, Petra Fromme
https://arxiv.org/abs/2508.11809

Comprehensive Structural Characterization of Charged Polymers Involved in Moisture-Driven Direct Air Capture
The rise in atmospheric carbon dioxide (CO2) levels has led to urgent calls for effective carbon capture methods, with direct air capture (DAC) emerging as a promising solution. This study focuses on the structural characterization of commercially available alkaline anion-exchange membrane (AEM) polymers, Fumasep FAA-3 and IRA 900, for use in low-energy, moisture-driven DAC applications. A combination of X-ray diffraction, small and wide-angle X-ray scattering (SAXS/WAXS), atomic force microsco…