Three-dimensional nanophotonics with spatially modulated optical properties.

Area of Science:

• Nanophotonics
• Materials Science
• Optical Engineering

Background:

• Nanophotonics enables precise control over light-matter interactions.
• Existing fabrication methods face limitations in resolution, material versatility, and volumetric control.

Purpose of the Study:

• To introduce Implosion Fabrication (ImpFab) as a versatile nanophotonics fabrication platform.
• To demonstrate ImpFab's capability for high-resolution, volumetric control over optical nanostructures.
• To showcase the fabrication of 3D photonic crystals, quasicrystals, and spatially modulated optical materials.

Main Methods:

• Combines top-down lithography with bottom-up nanoparticle assembly.
• Utilizes a hydrogel scaffold for precise material placement.
• Allows tuning of optical properties, such as refractive index, via printing parameters.

Main Results:

• Fabrication of 3D photonic crystals and quasicrystals with high spatial resolution.
• Demonstration of optical structures with spatially modulated unit cell material properties.
• Achieved precise control over optical material properties by adjusting printing parameters.

Conclusions:

• ImpFab offers unparalleled spatial resolution, material versatility, and volumetric control for nanophotonics.
• The platform enables the creation of nanostructures with tailored optical functionalities for sensing, imaging, and information processing.
• ImpFab opens new possibilities for developing non-Hermitian photonic systems with controlled gain and loss.