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One-step selective laser patterning of copper/graphene flexible electrodes.
Peng Peng1,2, Lihang Li1, Peng He2
1School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, People's Republic of China.
Nanotechnology
|January 15, 2019
Summary
Laser direct writing creates durable copper/graphene flexible electrodes. This method enhances conductivity and oxidation resistance for consumer electronics, avoiding complex synthesis steps.
Area of Science:
- Materials Science
- Nanotechnology
- Surface Engineering
Background:
- Flexible electrodes are crucial for modern consumer electronics.
- Existing fabrication methods often involve complex synthesis and sintering, leading to oxidation issues.
Purpose of the Study:
- To develop a one-step fabrication method for copper/graphene composite electrodes on flexible substrates.
- To enhance the conductivity and oxidation resistance of flexible electrodes.
Main Methods:
- Laser direct writing (LDW) was employed to fabricate copper/graphene composite films.
- Low power laser parameters (power, scanning speed, defocus distance) were optimized.
- In situ reduction of copper ions and simultaneous graphene growth were utilized.
Main Results:
- Successfully fabricated copper/graphene composite electrodes with good conductivity and enhanced oxidation resistance.
- Demonstrated tunable electrical performance and chemical composition via laser parameters.
- Proposed a mechanism for in situ reduction and interconnection of copper nanomaterials.
Conclusions:
- Laser direct writing offers an efficient, one-step approach for creating stable flexible electrodes.
- This method bypasses traditional synthesis and sintering, mitigating oxidation problems.
- The fabricated electrodes show potential for applications in flexible heaters and antennas.
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