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Mold design rules for residual layer-free patterning in thermal imprint lithography
Hyunsik Yoon1, Sung Hoon Lee, Seung Hyun Sung
1National Creative Research Initiative Center for Intelligent Hybrids, School of Chemical and Biological Engineering, The WCU Program of Chemical Convergence for Energy and Environment, The WCU Program on Multiscale Mechanical Design, Seoul National University, Seoul, 151-744, Korea.
Langmuir : the ACS Journal of Surfaces and Colloids
|May 31, 2011
Summary
This study provides mold design rules for residual layer-free patterning in thermal imprint processes. The findings guide optimal mold geometry and material selection for improved imprint results.
Area of Science:
- Materials Science
- Nanotechnology
- Manufacturing Engineering
Background:
- Residual layer formation is a common challenge in thermal imprint lithography, hindering pattern fidelity.
- Optimizing mold design is crucial for achieving defect-free nanopatterning.
Purpose of the Study:
- To establish design rules for molds that prevent residual layer formation during thermal imprint processes.
- To provide guidelines for selecting appropriate mold geometries and materials.
Main Methods:
- Derivation of design conditions based on mass balance, structural stability, and work of adhesion principles.
- Experimental validation using simple thermal imprint experiments with soft imprint molds.
Main Results:
- Identified key relationships between mold geometry, material properties, and residual layer formation.
- Demonstrated the effectiveness of the derived rules in achieving residual layer-free patterning.
Conclusions:
- The presented mold design rules are effective for optimizing thermal imprint processes.
- This work serves as a valuable guideline for researchers and engineers in nanopatterning applications.
