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Laser Writing Block Copolymer Self-Assembly on Graphene Light-Absorbing Layer
Hyeong Min Jin1, Seung Hyun Lee2, Ju Young Kim1
1National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science and Engineering, KAIST , Daejeon 34141, Republic of Korea.
ACS Nano
|February 13, 2016
Summary
Researchers developed a new laser nanofabrication method for creating ordered block copolymer structures below 12 nm. This technique utilizes graphene films for flexible, area-selective material assembly, paving the way for advanced electronic devices.
Area of Science:
- Materials Science
- Nanotechnology
- Laser Processing
Background:
- High-power laser processing enables rapid, area-selective material fabrication for applications like displays.
- Two-dimensional materials, such as graphene, are crucial for developing flexible electronic devices due to their unique properties.
Purpose of the Study:
- To demonstrate an area-selective ultrafast nanofabrication method for block copolymer films.
- To achieve highly ordered nanostructures below 12 nm using low-intensity laser irradiation.
- To leverage chemically modified graphene films for flexible and conformal light absorption.
Main Methods:
- Utilizing low-intensity infrared or visible laser irradiation to guide block copolymer self-assembly.
- Employing chemically modified graphene films as flexible, light-absorbing layers.
- Inducing self-assembly across the disorder-order transition via large thermal gradients.
Main Results:
- Achieved area-selective nanofabrication of block copolymer films into ordered architectures.
- Demonstrated control over nanostructure formation at scales below 12 nm.
- Successfully utilized graphene as a conformal light-absorbing layer on various surfaces.
Conclusions:
- The developed method offers a novel approach for ultrafast nanofabrication of ordered nanostructures.
- Chemically modified graphene films enable versatile applications on transparent, nonplanar, and flexible surfaces.
- This technique holds promise for the manufacturing of advanced, high-performance flexible devices.
