Spontaneous Additive Nanopatterning from Solution Route Using Selective Wetting.

Area of Science:

• Materials Science
• Nanotechnology
• Surface Science

Background:

• Nanopatterning is crucial for technological innovation but often hindered by complex, costly processes.
• Developing efficient and versatile nanopatterning methods is essential for advancing functional materials.

Purpose of the Study:

• To introduce a novel additive nanopatterning process for functional materials using selective wetting.
• To demonstrate the versatility and high performance of this solution-based approach.

Main Methods:

• Utilized selective wetting phenomenon for additive nanopatterning from solution.
• Created high-contrast surface energy patterns via one-step imprinting on hydrophobic/hydrophilic bilayers.
• Employed fluid-dynamic simulations to understand mechanisms and control parameters.

Main Results:

• Achieved nanopatterns as narrow as 150 nm with high yield over large areas.
• Demonstrated ultrahigh process speeds up to 4.6 m·min⁻¹.
• Showcased versatility in material utilization, vertical structure control, and substrate compatibility (including flexible substrates).

Conclusions:

• The selective wetting-based additive nanopatterning offers a fast, cost-efficient, and versatile solution for fabricating nanoscale patterns.
• Potential applications include high-resolution light-emitting pixel arrays and large-area plasmonic color filters on flexible substrates.