Indirect doping of microstructures fabricated by two-photon polymerization with gold nanoparticles

Area of Science:

• Nanoplasmonics and metamaterials science
• Polymer science
• Optical engineering

Background:

• Nanoplasmonics and metamaterials are crucial for advanced photonic devices.
• Noble metal nanoparticles offer unique optical properties for applications in biomedicine and photovoltaics.
• Existing methods for incorporating nanoparticles into polymers can interfere with fabrication.

Purpose of the Study:

• To develop an indirect doping method for incorporating gold nanoparticles into two-photon polymerized microstructures.
• To create functional microstructures for nanoplasmonics and metamaterials applications.
• To enable large-scale production of nanoparticle-doped microstructures.

Main Methods:

• Fabrication of two-photon polymerized microstructures.
• Indirect incorporation of gold nanoparticles to avoid interference with the polymerization process.
• Simultaneous heating for nanoparticle production across multiple samples.

Main Results:

• Successfully fabricated polymer microstructures doped with gold nanoparticles.
• Achieved strong emission from the gold nanoparticles within the microstructures.
• Demonstrated that the indirect doping process does not hinder two-photon polymerization.

Conclusions:

• The developed indirect doping method is effective for creating gold nanoparticle-doped polymer microstructures.
• These microstructures exhibit strong fluorescence and are suitable for nanoplasmonics and metamaterials.
• The nanoparticle production technique allows for simultaneous processing of multiple samples, paving the way for large-scale applications.