Durable Transparent Conductive Films With Embedded AgNW Networks for Integrated EMI Shielding, Strain Sensing and...

Area of Science:

• Materials Science
• Nanotechnology
• Electromagnetics

Background:

• Intelligent electromagnetic systems demand advanced observation windows.
• Transparent, flexible, and durable EMI shielding films are crucial but challenging to develop.
• Existing solutions often compromise on transparency, flexibility, or environmental resistance.

Purpose of the Study:

• To fabricate a multifunctional transparent EMI shielding film with enhanced properties.
• To investigate the film's performance in optical transmittance, electrical conductivity, and EMI shielding.
• To evaluate the film's durability, strain-sensing, and Joule heating capabilities.

Main Methods:

• Fabrication of a silver nanowire (AgNW) and polydimethylsiloxane (PDMS) composite film using rotational spraying and infiltration transfer.
• Characterization of optical transmittance, sheet resistance, and EMI shielding effectiveness (EMI SE) in X, Ku, and K bands.
• Assessment of interfacial adhesion, antioxidant capacity, strain-induced reconfiguration, and Joule heating functionality.

Main Results:

• The AgNW/PDMS film achieved 71.1% optical transmittance and 11.3 Ω/sq sheet resistance.
• Average EMI SE of 30.2 dB (X-band), 32.6 dB (Ku-band), and 34.5 dB (K-band) was recorded.
• Enhanced interfacial adhesion, antioxidant capacity, strain-sensing, and Joule heating were demonstrated.

Conclusions:

• The developed AgNW/PDMS film offers a promising solution for transparent EMI shielding with multifunctional capabilities.
• The film's durability and adaptive properties make it suitable for harsh environments.
• Potential applications include aerospace, automotive, and next-generation electronic devices.