title: Plasmon assisted 3D microstructuring of gold nanoparticle-doped polymers.
abstract: 3D laser lithography of a negative photopolymer (zirconium/silicon hybrid solgel SZ2080) doped with gold nanoparticles (Au NPs) is performed with a 515 nm and 300 fs laser system and the effect of doping is explored. By varying the laser-generated Au NP doping concentration from 4.8 · 10(-6) wt% to 9.8 · 10(-3) wt% we find that the fabricated line widths are enlarged by up to 14.8% compared to structures achieved in pure SZ2080. While implicating a positive effect on the photosensitivity, the doping has no adverse impact on the mechanical quality of intricate 3D microstructures produced from the doped nanocompound. Additionally, we found that SZ2080 increases the long term (∼months) colloidal stability of Au NPs in isopropanol. By discussing the nanoparticle-light interaction in the 3D polymer structures we provide implications that our findings might have on other fields, such as biomedicine and photonics.
authors.affiliation: Department of Quantum Electronics, Vilnius University, Saulėtekio Ave. 9, Vilnius LT-10222, Lithuania.
authors.forename: Linas
authors.initials: L
authors.lastname: Jonušauskas
authors.forename: Marcus
authors.initials: M
authors.lastname: Lau
authors.forename: Peter
authors.initials: P
authors.lastname: Gruber
authors.forename: Bilal
authors.initials: B
authors.lastname: Gökce
authors.forename: Stephan
authors.initials: S
authors.lastname: Barcikowski
authors.forename: Mangirdas
authors.initials: M
authors.lastname: Malinauskas
authors.forename: Aleksandr
authors.initials: A
authors.lastname: Ovsianikov