High-Performance and Reliable Silver Nanotube Networks for Efficient and Large-Scale Transparent Electromagnetic...

Area of Science:

• Materials Science
• Nanotechnology
• Physics

Background:

• Flexible and transparent electromagnetic interference (EMI) shielding materials are crucial for modern visual windows and display devices in various sectors.
• Current methods for achieving efficient and reliable transparent EMI shielding face significant challenges.

Purpose of the Study:

• To develop a high-performance silver nanotube (AgNT) network for transparent EMI shielding applications.
• To overcome existing limitations in achieving stable and integrated interconnects in such materials.

Main Methods:

• Fabrication of a uniform, large-scale nanofiber skeleton.
• Preparation of a silver nanotube (AgNT) network using physical depositing technology.
• Integration of stable and interconnected AgNTs onto the nanofiber skeleton.

Main Results:

• Achieved a silver nanotube network with conductivity of ~1.0 Ω/sq at >90% transmittance, an order of magnitude higher than previous studies.
• Demonstrated <10% variation in properties after over 5000 random deformations, indicating excellent flexibility and stability.
• Produced a transparent and flexible EMI shielding film (<1 mm thickness) with ~35 dB shielding effectiveness, transferable to various surfaces.

Conclusions:

• The developed AgNT shielding film offers a scalable, low-cost, and simple preparation method.
• The material exhibits excellent comprehensive properties, including high conductivity, transparency, flexibility, and EMI shielding effectiveness.
• The AgNT shielding film holds significant potential for future applications in flexible and transparent electronic devices and windows.