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Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
Published on: June 20, 2019
Density doubling of block copolymer templated features
Nathanael L Y Wu1, Xiaojiang Zhang, Jeffrey N Murphy
1National Institute for Nanotechnology (NINT), National Research Council, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada.
Nano Letters
|December 16, 2011
Summary
Block copolymers can template nanopatterns. This study shows how multilayered domains double pattern density by controlling film thickness and solvent annealing for denser lines, compatible with graphoepitaxy.
Area of Science:
- Materials Science
- Polymer Science
- Nanotechnology
Background:
- Block copolymers are used to create nanopatterns.
- The periodicity of these patterns is determined by the polymer's spacing.
Purpose of the Study:
- To demonstrate a technique for doubling the pattern density templated by block copolymers.
- To achieve higher density nanopatterns using multilayered cylindrical domains.
Main Methods:
- Controlling the initial thickness of block copolymer films.
- Utilizing solvent annealing conditions to swell the film.
- Inducing the formation of bilayers of horizontal cylindrical domains.
Main Results:
- Successfully doubled the pattern density of nanopatterns templated by block copolymers.
- Reproducibly created density-doubled lines through controlled swelling.
- Demonstrated compatibility of the technique with graphoepitaxy.
Conclusions:
- Multilayered arrangements of cylindrical domains effectively double pattern density.
- Precise control over film thickness and solvent annealing is key to achieving density doubling.
- This method offers a pathway to enhanced nanopatterning for various applications.
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