Continuous-Gradient Plasmonic Nanostructures Fabricated by Evaporation on a Partially Exposed Rotating Substrate

Area of Science:

• Materials Science
• Nanotechnology
• Optics

Background:

• Fabricating nanostructures with precise control over geometric parameters is crucial for advanced optical applications.
• Current methods for creating gradient nanostructures can be complex and time-consuming.

Purpose of the Study:

• To develop a simplified and continuous method for fabricating nanostructures with spatially varying properties.
• To enable efficient optimization of metasurface designs.

Main Methods:

• A continuous-gradient approach using material evaporation.
• Mask lithography technique allowing continuous tuning of physical properties.
• Fabrication of nanostructures with varying thickness, lateral positioning, and orientation on a single substrate.

Main Results:

• Successful fabrication of nanostructures with continuously varying geometric parameters on a single substrate.
• Demonstrated ability to tune physical properties of materials through controlled evaporation.
• Simplified fabrication process for complex nanostructures.

Conclusions:

• The continuous-gradient evaporation method offers a powerful tool for nanostructure fabrication.
• This technique significantly streamlines the optimization and design of metasurfaces.
• The approach holds potential for various applications in optics and materials science.