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Piezo-Actuated One-Axis Vibrational Patterning for Mold-Free Continuous Fabrication of High-Precision
Seungjo Lee1, Nayeong Lee1, Gyubeom Yeon1
1Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea.
ACS Nano
|January 20, 2021
Summary
We developed a mold-free nanopatterning method called piezo-actuated one-axis vibrational patterning (POP). This scalable technology creates precise micro- and nanopatterns on various materials without needing pre-made molds.
Area of Science:
- Materials Science
- Nanotechnology
- Mechanical Engineering
Background:
- Traditional nanopatterning often relies on costly and complex mold fabrication.
- Scalable, high-resolution patterning is crucial for advanced functional devices.
Purpose of the Study:
- To introduce a novel mold-free nanopatterning technology.
- To demonstrate the continuous and scalable fabrication of micro- and nanopatterns.
- To enable precise control over pattern dimensions and periods.
Main Methods:
- Utilizing piezo-actuated one-axis vibrational patterning (POP).
- Employing a rigid tool edge for sub-50 nm-periodic indentations on compliant substrates.
- Controlling tool vibration frequency, temperature, and substrate feed rate.
Main Results:
- Achieved continuous and scalable fabrication of micro- and nanopatterns.
- Demonstrated precise programmability of pattern periods and dimensions.
- Created diverse patterns with variable depths and multidimensional profiles without molds.
Conclusions:
- POP offers a simple, universal, and scalable approach to nanopatterning.
- The technology is versatile and applicable to various functional devices requiring large-area patterns.
- POP eliminates the need for mold prefabrication, simplifying the patterning process.
