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Updated: Jun 20, 2026
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Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials
Published on: July 18, 2025
Spontaneous dewetting-induced residue-free patterning at room temperature
Se-Jin Choi1, Dongha Tahk, Hyunsik Yoon
1School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, South Korea. saltchoi@snu.ac.kr
Journal of Colloid and Interface Science
|September 12, 2009
Summary
This study introduces a novel residue-free lithographic patterning method using pressure-induced dewetting. The technique ensures clean surface exposure without heating or surface treatments, ideal for microfabrication applications.
Area of Science:
- Materials Science
- Nanotechnology
- Surface Chemistry
Background:
- Traditional lithography often involves complex steps and potential residue issues.
- Achieving residue-free patterning is crucial for advanced microelectronic and biological device fabrication.
- Existing methods may require heating or specific surface treatments, limiting applicability.
Purpose of the Study:
- To present a novel lithographic patterning method based on dewetting.
- To demonstrate residue-free patterning without heating or surface treatments.
- To enable efficient fabrication of electronic and biological devices.
Main Methods:
- Sequential molding under applied pressure using a rigiflex mold and roller.
- Inducing pressure-thinning leading to spontaneous dewetting.
- Utilizing liquids with a negative spreading coefficient.
Main Results:
- Achieved spontaneous, residue-free dewetting for patterning.
- Demonstrated patterning independent of pattern duty ratio.
- Confirmed instantaneous surface exposure without contamination.
Conclusions:
- The developed method offers a simplified, efficient approach to residue-free lithographic patterning.
- The technique is versatile and applicable across various pattern densities.
- The exposed surface serves as an effective sacrificial layer for subsequent fabrication steps.
