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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
Three-dimensional metallic photonic crystals with optical bandgaps
Nikos Vasilantonakis1, Konstantina Terzaki, Ioanna Sakellari
1Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, N. Plastira 100, Heraklion, Greece.
Advanced Materials (Deerfield Beach, Fla.)
|January 27, 2012
Summary
Researchers fabricated 3D photonic crystals using femtosecond laser writing and silver coating. These novel optical materials feature sub-100 nm structures and exhibit clear diffraction patterns for optical applications.
Area of Science:
- Materials Science
- Optics
- Nanotechnology
Background:
- Photonic crystals are crucial for controlling light.
- Achieving three-dimensional (3D) photonic crystals with optical bandgaps remains a challenge.
- Advanced fabrication techniques are needed for nanoscale optical materials.
Purpose of the Study:
- To demonstrate the fabrication of 3D photonic crystals with an optical bandgap.
- To utilize direct laser writing and selective metal coating for creating complex nanostructures.
- To characterize the structural and optical properties of the fabricated crystals.
Main Methods:
- Direct femtosecond laser writing of an organic-inorganic hybrid material.
- Incorporation of metal-binding moieties into the material.
- Selective silver coating via electroless plating.
- Characterization using diffraction pattern analysis.
Main Results:
- Successful fabrication of fully 3D photonic crystals.
- Achieved 600-nm intralayer periodicity and sub-100 nm features.
- Exhibited well-defined diffraction patterns, indicating photonic bandgap properties.
- Demonstrated the efficacy of the hybrid material and fabrication process.
Conclusions:
- Femtosecond laser writing combined with selective silver coating is a viable method for fabricating 3D photonic crystals.
- The developed material and technique enable the creation of nanoscale optical structures.
- The resulting photonic crystals show potential for applications in optical devices and technologies.
