Rapid elemental imaging of copper-bearing critical ores using laser-induced breakdown spectroscopy coupled with PCA and PLS-DA.

This study presents the application of laser-induced breakdown spectroscopy (LIBS) for analyzing various copper-bearing critical ores with significant Cu concentrations. LIBS detected Cu as a base element, along with other minor elements including Al, C, Fe, Mg, Ni, Si, and Zn, under optimized experimental conditions that include 80 ± 0.3 mJ laser energy, 2 μs delay time, ∼500 μm spot size, and a 45° angle between the collecting lens and the sample surface.

Laser-Based Characterization and Classification of Functional Alloy Materials (AlCuPbSiSnZn) Using Calibration-Free Laser-Induced Breakdown Spectroscopy and a Laser Ablation Time-of-Flight Mass Spectrometer for Electrotechnical Applications.

In this paper, we present the analysis of functional alloy samples containing metals aluminum (Al), copper (Cu), lead (Pb), silicon (Si), tin (Sn), and zinc (Zn) using a Q-switched Nd laser operating at a wavelength of 532 nm with a pulse duration of 5 ns. Nine pelletized alloy samples were prepared, each containing varying chemical concentrations (wt.%) of Al, Cu, Pb, Si, Sn, and Zn-elements commonly used in electrotechnical and thermal functional materials.

Enhancing Superconductivity in CuTlBaCaCuO with Graphene Incorporation: A Comprehensive Study.

We report a significant enhancement in superconducting properties of the CuTlBaCaCuO (CuTl-1223) superconductor through the incorporation of graphene. The graphene quantum dots (GQDs) added to G/CuTl-1223 superconductors were synthesized by the solid-state reaction method and characterized using various analytical techniques including X-ray diffraction, temperature-dependent resistivity measurements, scanning electron microscopy, Fourier-transform infrared (FTIR) spectroscopy, and excess conductivity analyses. We found that all synthesized samples exhibit orthorhombic crystal structure, with the -axis length and unit cell volume increased with the incorporation of GQDs.

Assessment of the importance and catalytic role of chromium oxide and chromium carbide for hydrogen generation hydrolysis of magnesium.

Increasing energy demands and low-carbon emission energy carriers are global challenges for renewable energy resources. Regarding the aforementioned issues, magnesium-based composites are promising candidates for energy carriers. However, rapid initial hydrolysis kinetics and higher hydrogen yields are the objectives for practical applications.