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Direct Laser Writing of Silica Nanoparticle Nanocomposites: Probing Mechanical Reinforcement and Understanding
Amrutha Augustine1, Jing Qian2, Teodora Faraone1
1School of Chemistry & AMBER, The SFI Research Centre for Advanced Materials and BioEngineering Research, Trinity College Dublin, Dublin, D02PN40, Ireland.
Small (Weinheim an Der Bergstrasse, Germany)
|March 5, 2024
Summary
New nanocomposite materials for direct laser writing (DLW) enable the creation of complex 3D structures with tunable structural color. These silica nanoparticle-infused materials offer enhanced physical properties and controllable photonic characteristics for advanced additive manufacturing applications.
Area of Science:
- Additive Manufacturing
- Materials Science
- Nanotechnology
Background:
- Nanocomposite materials are increasingly utilized in additive manufacturing to modify material properties.
- Direct laser writing (DLW) via two-photon polymerization is a key technique for fabricating microstructures.
Purpose of the Study:
- To present novel nanocomposite materials for DLW applications.
- To demonstrate the fabrication of complex 3D structures with enhanced physical and optical properties using these materials.
Main Methods:
- Incorporation of silica nanoparticles into acrylate photoresists through a one-step process.
- Utilizing DLW by two-photon polymerization to fabricate microstructures.
- Employing numerical modeling to predict and control reflected wavelengths.
Main Results:
- Successful fabrication of complex microstructures with large overhangs.
- Demonstration of reflected structural color in silica nanoparticle-containing composites.
- Tunable structural color achieved by varying DLW parameters and nanoparticle concentration.
Conclusions:
- Silica nanoparticle-based nanocomposites are valuable for DLW, offering physical reinforcement and controllable photonic properties.
- The developed materials enable the creation of microstructures with a wide gamut of structural colors.
- This approach facilitates the encoding of specific colors into fabricated microstructures for diverse applications.
