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Updated: Jun 6, 2025
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A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires
Published on: January 21, 2016
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Laser-Induced Silver Nanowires/Polymer Composites for Flexible Electronics and Electromagnetic Compatibility
Il'ya Bril'1, Anton Voronin1,2,3, Yuri Fadeev1
1Federal Research Center, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences (FRC KSC SB RAS), 660036 Krasnoyarsk, Russia.
Polymers
|November 27, 2024
Summary
Laser processing of silver nanowires (AgNW) on polymer substrates creates conductive, flexible composites. This method enhances adhesion and electrical properties, yielding materials suitable for advanced electronics and shielding applications.
Area of Science:
- Materials Science
- Nanotechnology
- Electrical Engineering
Background:
- The Internet of Things (IoT), electronics, and neural interfaces demand advanced materials with superior mechanical and electrical properties.
- Traditional methods for creating conductive layers in composites include volume blending, inkjet printing, lithography, and laser processing.
- Laser processing offers a scalable, cost-effective, and environmentally friendly approach for composite fabrication.
Purpose of the Study:
- To synthesize and characterize silver nanowires (AgNW).
- To develop a laser-based method for creating conductive and flexible AgNW/polymer composites.
- To evaluate the electrical, mechanical, and shielding properties of the resulting composite materials.
Main Methods:
- Synthesis and characterization of AgNW using UV-vis spectroscopy, TEM, and SAED.
- Fabrication of AgNW films on polymer substrates.
- Laser irradiation of AgNW films using a 432 nm laser to induce sintering and polymer integration.
- Evaluation of sheet resistance, adhesion, bending capability, and electromagnetic shielding efficiency.
Main Results:
- Synthesized AgNW exhibited UV-vis absorption between 345-410 nm due to plasmon resonance.
- Laser treatment resulted in AgNW sintering, reducing sheet resistance by over 50%.
- Improved adhesion from 0-1 B to 5 B and achieved a bending radius of 0.5 mm.
- Shielding efficiencies of 40 dB for thin films and 85-90 dB for thicker films (0.01-40 GHz).
Conclusions:
- Laser processing is an effective method for creating high-performance AgNW/polymer composites.
- The developed composite materials exhibit excellent electrical conductivity, adhesion, flexibility, and electromagnetic shielding.
- These findings provide a basis for manufacturing flexible electronic components for diverse applications.
