Related Experiment Video
Updated: Aug 31, 2025
05:45
A Method to Fabricate Disconnected Silver Nanostructures in 3D
Published on: November 27, 2012
13.8K
Cluster-enabled patterning of copper nanostructures from aqueous solution using a femtosecond laser
Zhijun Luo1,2,3, Zhihao Zeng1,2, Ziyu Liu1,2,3
1Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People's Republic of China.
Nanotechnology
|August 24, 2022
Summary
This study introduces a novel one-step method for creating low-resistivity nanoscale copper wire using direct laser writing. This technique enables the fabrication of common metal nanodevices, overcoming limitations of noble metal nanostructures.
Area of Science:
- Materials Science
- Nanotechnology
- Laser Processing
Background:
- Fabricating common metal nanostructures via direct laser writing faces challenges, often necessitating noble metals.
- Existing methods struggle with precise patterning and material limitations.
Purpose of the Study:
- To develop a one-step method for patterning low-resistivity nanoscale copper wire.
- To enable direct laser writing of common metal nanostructures for nanodevice fabrication.
Main Methods:
- Utilized a complexing and reducing agent for single- and two-photon absorption of copper solution with a femtosecond laser.
- Pre-generated copper clusters to reduce laser energy and prevent solution boiling.
- Employed a surfactant to control cluster overgrowth and ensure nanowire uniformity.
Main Results:
- Achieved a minimum copper wire width of 230 nm.
- Obtained a low resistivity of 1.22 × 10-5 Ω·m for the patterned copper wire.
- Demonstrated high uniformity in the written nanowires.
Conclusions:
- The proposed one-step method successfully enables direct laser writing of low-resistivity copper nanowires.
- This technique offers a viable pathway for fabricating common metal nanodevices.
- Overcomes previous limitations in direct laser writing of nanostructures using abundant metals.
