Fabrication of complex 3-dimensional patterned structures on a ∼10 nm scale from a single master pattern by secondary...

Area of Science:

• Materials Science
• Nanotechnology
• Lithography

Background:

• Fabricating complex 3D nanopatterns with high resolution is challenging.
• Existing methods often lack efficiency and cost-effectiveness for mass production.

Purpose of the Study:

• To introduce a novel, highly efficient method for fabricating complex 3D nano-patterns.
• To demonstrate the versatility of the technique in generating diverse nanostructures from a single master pattern.

Main Methods:

• Developed a 10 nm scale patterning method: secondary sputtering lithography.
• Utilized reactive ion etching (RIE) with controlled etching rates and times.
• Manipulated polystyrene (PS) pillar etching and residual layer thickness to control feature dimensions.

Main Results:

• Achieved fabrication of various complex 3D nano-patterns from a single master.
• Demonstrated that RIE in PS pillars allows for diverse nanostructure shapes.
• Showcased how PS residual layer thickness influences feature dimensions.

Conclusions:

• The developed secondary sputtering lithography is a highly efficient method for 3D nanopattern fabrication.
• This technique offers a cost-effective solution for mass production of complex nanoscale patterns with high resolution.
• The method provides a new procedure for versatile 3D nanopattern generation.