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Updated: Jun 3, 2025

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Multiexposure Grayscale Patterns with Low-Energy Electrons.

Xinyu Sun1,2,3,4, Guangnan Yao2,4, Rui Zheng2,4

  • 1College of Optical and Electronic Technology, China Jiliang University, Hangzhou, Zhejiang 310018, China.

ACS Applied Materials & Interfaces
|January 13, 2025
PubMed
Summary
This summary is machine-generated.

Low-energy electron beam lithography (iEBL) now enables high-precision quasi-3D nanofabrication. This technique creates complex structures and contamination-free metal nanostructures, expanding manufacturing capabilities.

Keywords:
electron-beam lithographygrayscale patternsice-assisted EBLlow-energy electronswater ice

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Physics

Background:

  • High-energy electron beam lithography is standard for nanofabrication but limited for 3D.
  • Low-energy electron beam techniques are underutilized due to precision and exposure limitations.

Purpose of the Study:

  • To introduce an ice-assisted electron-beam lithography (iEBL) strategy using low-energy electrons.
  • To overcome resolution and quasi-3D manufacturing compatibility issues.

Main Methods:

  • Developed an optimized exposure strategy with in situ alignment and correction for iEBL.
  • Demonstrated fabrication of complex grayscale structures and metal nanostructures.

Main Results:

  • Created 30-layer ladder formations (10 nm step height, 300 nm width).
  • Achieved line patterns with resolution below 30 nm.
  • Transformed grayscale ice sculptures into contamination-free metal nanostructures.

Conclusions:

  • The iEBL strategy enhances low-voltage technique potential for quasi-3D manufacturing.
  • This method expands manufacturing capabilities for complex nanostructures and metal components.