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Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography
Published on: September 2, 2017
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Plasmon assisted 3D microstructuring of gold nanoparticle-doped polymers
Linas Jonušauskas1, Marcus Lau, Peter Gruber
1Department of Quantum Electronics, Vilnius University, Saulėtekio Ave. 9, Vilnius LT-10222, Lithuania.
Nanotechnology
|March 2, 2016
Summary
Adding gold nanoparticles (Au NPs) to SZ2080 photopolymer enhances 3D laser lithography, increasing feature sizes without compromising microstructure quality. This doping also improves nanoparticle stability.
Area of Science:
- Materials Science
- Nanotechnology
- Optics
Background:
- 3D laser lithography enables the fabrication of complex microstructures.
- SZ2080 is a negative photopolymer suitable for high-resolution 3D printing.
- Gold nanoparticles (Au NPs) can modify material properties through light-matter interactions.
Purpose of the Study:
- To investigate the effect of gold nanoparticle (Au NP) doping on the 3D laser lithography of SZ2080.
- To evaluate changes in photosensitivity, mechanical properties, and colloidal stability.
- To explore potential applications in fields like biomedicine and photonics.
Main Methods:
- 3D laser lithography using a 515 nm, 300 fs laser system.
- Fabrication of SZ2080 microstructures with varying concentrations of Au NPs (4.8 × 10⁻⁶ wt% to 9.8 × 10⁻³ wt%).
- Analysis of fabricated structure dimensions, mechanical integrity, and Au NP colloidal stability in isopropanol.
Main Results:
- Doping with Au NPs increased fabricated line widths by up to 14.8% compared to pure SZ2080.
- Enhanced photosensitivity was observed with Au NP doping.
- No adverse impact on the mechanical quality of intricate 3D microstructures was found.
- SZ2080 demonstrated increased long-term colloidal stability for Au NPs in isopropanol.
Conclusions:
- Au NP doping is a viable strategy to enhance 3D laser lithography of SZ2080, improving resolution and feature size.
- The doped nanocomposite maintains excellent mechanical properties for complex 3D structures.
- The findings suggest potential for advanced applications in photonics and biomedicine due to controlled nanoparticle behavior and enhanced lithographic capabilities.
