DC sputtered WTi nanoparticles for solar thermal absorption : synthesis and characterization

Al-Rjoub, Abbas (avtor)

This study presents a method for tungsten-titanium (WTi) nanoparticles synthesis by DC-magnetron sputtering in a plasma gas condensation cluster-source at room temperature. After optimizing the conditions for nanoparticles formation, the samples were extensively characterized through Scanning-Electron Microscopy (SEM), Energy Dispersive X-Ray Spectroscopy (EDS), X-ray Diffraction (XRD), and Transmission-Electron Microscopy (TEM). For nanoparticles produced under a partial Ar pressure of 14 SCCM, the synthesis rate for thick layer on Si is 241 nm/min. The diameters of nanoparticles deposited on CF 400-Cu grids ranged from 30 nm to 55 nm. The morphology of the nanoparticles is distinguished by a dendritic, flower-like structure, with significant agglomeration observed in particles of varying sizes. TEM and XRD analysis confirm that the nanoparticles exhibit a crystalline-structure, predominantly in the α-W phase. The embedded WTi nanoparticles in SiAlOx layer with variation in current density from 2.6 mA/cm² to 7.8 mA/cm² provide a wide range of transmittance (T) and reflectance (R) values with specific optical constants refractive index (n) and extinction coefficient (k) for tailored optical applications, capable to simulate a solar thermal absorber with absorptance (α) of 96.0 %.

• Jezik: Angleški jezik
• Ključne besede: WTi nanoparticles, sputtered nanoparticles, metal nanoparticles, optical properties
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2025
• Št. strani: 6 str.
• Številčenje: Vol. 8, art. 100218
• PID: 20.500.12556/RUL-171053
• UDK: 620.3
• ISSN pri članku: 2949-8295
• DOI: 10.1016/j.nxnano.2025.100218
• COBISS.SI-ID: 244248323
• Datum objave v RUL: 30.07.2025

Gradivo je del revije

• Naslov: Next nanotechnology
• Založnik: Elsevier
• ISSN: 2949-8295
• COBISS.SI-ID: 192195843

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.