20.500.12556/DiRROS-22726 Development of a gold nanoparticle dispersion for plasma jet printing on solid substrates Gold nanoparticles (AuNPs) were synthesised using ultrasonic spray pyrolysis (USP) with the addition of polyvinylpyrrolidone (PVP) as a stabilising agent and subsequently dried via lyophilisation. The resulting dried AuNPs were redispersed in ethanol and homogenised to ensure uniform dispersion. This AuNP dispersion was then deposited onto a ceramic substrate - aluminum oxide (Al2O3) - using plasma jet printing. Comprehensive characterisation of the dispersion, AuNPs, and the resulting printed lines was performed using the following methods: inductively coupled plasma optical emission spectroscopy (ICP-OES), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), scanning transmission electron microscopy (STEM), energy dispersive X-ray spectroscopy (EDS), ultraviolet-visible spectroscopy (UV–Vis), dynamic light scattering (DLS), measurements of dispersion viscosity and printed line roughness. ICP-OES confirmed consistent gold content in the AuNP dispersion, while the SEM and EDS analyses revealed predominantly spherical AuNPs with minimal aggregation and similar size distributions. TEM, SAED, and STEM/EDS confirmed that the crystalline structure and elemental composition of the AuNPs had diverse morphologies and strong gold signals. The UV–VIS, DLS, and zeta potential measurements indicated moderate colloidal stability, and thermogravimetric analysis (TGA) verified the AuNPs dispersion’s composition. The AuNP dispersion exhibited thixotropic behaviour favourable for printing applications, while confocal microscopy confirmed smooth, uniform printed traces, with an average surface line roughness of 1.65 μm. The successful use of plasma printing with the AuNP dispersion highlights its potential for functional material applications in electronics. gold nanoparticles ultrasonic spray pyrolysis dispersion plasma jet printing zlato nanodelci ultrazvočna razpršilna piroliza disperzija tiskanje s plazemskim curkom true false true MDPI Švica Angleški jezik Slovenski jezik © 2025 by the authors Neznano 2025-06-19 08:11:54 2025-06-19 08:11:55 2025-10-24 03:52:03 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Opis vira z dne 17. 6. 2025; 22 str. iss. 12, [article no.] 2713 Vol. 18 2025 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 2025-06-09 66.017-022.513.2:546.59 1996-1944 10.3390/ma18122713 239689987 RAZ_Kresnik_Lan_2025.pdf RAZ_Kresnik_Lan_2025.pdf 1 7B63C5A4E282F6395FC02BADA34FDD30 b31b428e3eb68e170ff6803fe93ee9268b81082cbd431acacd54aacb7aa174c8 abe9aaeb-4ccb-11f0-bf0a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=32972 https://www.mdpi.com/1996-1944/18/12/2713 1 8b5b755f-4cc3-11f0-bf0a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=32971 Inštitut za kovinske materiale in tehnologije 0 0 0