Lan Kresnik (Avtor), Peter Majerič (Avtor), Darja Jenko (Avtor), Rebeka Rudolf (Avtor)

Povzetek

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.

Ključne besede

zlato;nanodelci;ultrazvočna razpršilna piroliza;disperzija;tiskanje s plazemskim curkom;gold nanoparticles;ultrasonic spray pyrolysis;dispersion;plasma jet printing;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: IMT - Inštitut za kovinske materiale in tehnologije
Založnik: MDPI
UDK: 66.017-022.513.2:546.59
COBISS: 239689987 Povezava se bo odprla v novem oknu
ISSN: 1996-1944
Št. ogledov: 388
Št. prenosov: 252
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: zlato;nanodelci;ultrazvočna razpršilna piroliza;disperzija;tiskanje s plazemskim curkom;
Vrsta datoteke: PDF
Komentar vira: Nasl. z nasl. zaslona; Opis vira z dne 17. 6. 2025;
Strani: 22 str.
Letnik: ǂVol. ǂ18
Zvezek: ǂiss. ǂ12, [article no.] 2713
Čas izdaje: 2025
DOI: 10.3390/ma18122713
ID: 26620432