Electrically curable double-layer polymer resist for dynamic nanoscale lithography.

Area of Science:

• Materials Science
• Nanotechnology
• Polymer Chemistry

Background:

• Nanoscale fabrication is crucial for advanced electronics and photonics.
• Existing lithography techniques face limitations in resolution, cost, or dynamic control.
• Electric lithography offers a promising alternative for high-resolution patterning.

Purpose of the Study:

• To develop a novel double-layer polymer resist system for dynamic nanoscale electric lithography.
• To achieve high-resolution nanopatterning with precise control over pattern formation.
• To demonstrate the dynamic modifiability of generated nanopatterns.

Main Methods:

• Fabrication of a double-layer polymer resist comprising an electrically curable top layer and an ionic conductive bottom layer.
• Utilizing onium salt photo-acid generators within the top layer.
• Applying electric potential through conductive mask patterns to induce localized acid generation and subsequent resin cross-linking.
• Characterization of nanopattern resolution and dynamic modification capabilities.

Main Results:

• Successful development of a double-layer polymer resist system.
• Demonstration of nanopattern generation with sub-50 nm resolution.
• Achieved dynamic modification of nanopatterns by varying applied electric potentials.
• The process relies on electric potential-induced proton acid generation and cationic polymerization.

Conclusions:

• The developed double-layer resist enables efficient and dynamic nanoscale electric lithography.
• Sub-50 nm resolution nanopatterns can be precisely generated and modified.
• This approach offers a new pathway for advanced nanoscale fabrication with dynamic control.