Fabrication of micro-nano hybrid patterns on a solid surface.

Area of Science:

• Materials Science
• Nanotechnology
• Surface Chemistry

Background:

• Fabricating complex micro- and nano-scale patterns of metals on surfaces is crucial for advanced electronic and optical devices.
• Existing methods often lack the precision or versatility to create multi-component or multi-scale patterns.

Purpose of the Study:

• To present a versatile platform for fabricating regular micro- and nano-patterns of metallic materials.
• To demonstrate the controlled synthesis of gold-platinum (Au-Pt) core-shell nanostructures and other metallic patterns.

Main Methods:

• A hybrid approach combining photolithography, block copolymer micelle nanolithography, and controlled seed growth was employed.
• Fabrication involved creating a micropatterned nanoarray of Au-Pt core-shell particles on an Au nanoarray background.
• Two additional patterns were generated: hexagonal nanopatterns of Au-Pt bimetallic nanodots and interlaced patterns of Pt microsheets with Au nanoarrays.

Main Results:

• Successfully fabricated a hybrid pattern featuring Au-Pt core-shell particles within an Au nanoarray background.
• Achieved controlled synthesis of hexagonal Au-Pt bimetallic nanodots with tunable Pt shell thickness.
• Demonstrated the creation of an interlaced pattern comprising Pt microsheets and Au nanoarrays.

Conclusions:

• The developed method provides a robust platform for generating diverse and regular micro- and nano-scale patterns of single or multiple metals.
• This technique offers precise control over pattern morphology and composition, paving the way for novel material design and device fabrication.