High-definition direct-print of metallic microdots with optical vortex induced forward transfer

We demonstrate high-definition, direct-printing of micron-scale metallic dots, comprised of close-packed gold nanoparticles, by utilizing the optical vortex laser-induced forward transfer technique. We observe that the spin angular momentum of the optical vortex, associated with circular polarizatio...

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Veröffentlicht in:APL photonics 2024-03, Vol.9 (3), p.036108-036108-8
Hauptverfasser: Wei, Rong, Kawaguchi, Haruki, Sato, Kaito, Kai, Sayaka, Yamane, Keisaku, Morita, Ryuji, Yuyama, Ken-ichi, Kawano, Satoyuki, Miyamoto, Katsuhiko, Aoki, Nobuyuki, Omatsu, Takashige
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Sprache:eng
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Zusammenfassung:We demonstrate high-definition, direct-printing of micron-scale metallic dots, comprised of close-packed gold nanoparticles, by utilizing the optical vortex laser-induced forward transfer technique. We observe that the spin angular momentum of the optical vortex, associated with circular polarization, assists in the close-packing of the gold nanoparticles within the printed dots. The printed dots exhibit excellent electrical conductivity without any additional sintering processes. This technique of applying optical vortex laser-induced forward transfer to metallic dots is an innovative approach to metal printing, which does not require additional sintering. It also serves to highlight new insights into light–matter interactions.
ISSN:2378-0967
2378-0967
DOI:10.1063/5.0187189