Printed graphene and its composite with copper for electromagnetic interference shielding applications

Area of Science:

• Materials Science
• Nanotechnology
• Electrical Engineering

Background:

• Escalating electromagnetic interference (EMI) due to advancements in mobile electronics, telecommunication systems, and 5G technologies.
• Graphene-based materials show promise for effective EMI shielding.
• Efficient application methods are crucial for practical EMI shielding solutions.

Purpose of the Study:

• To demonstrate plasma jet printing of graphene and graphene-copper composites for EMI shielding.
• To evaluate the shielding effectiveness (SE) of these printed materials.
• To assess the environmental impact compared to traditional shielding materials.

Main Methods:

• Plasma jet printing of thin films using graphene and graphene-copper composites.
• Measurement of shielding effectiveness (SE) for the printed films.
• Analysis of the 'green index' and reflection properties of the shielding materials.

Main Results:

• Achieved SE over 30 dB, corresponding to blocking more than 99.9% of electromagnetic radiation.
• Graphene and graphene-copper composites demonstrated higher green index than pure copper shields.
• Plasma jet printing proved to be a versatile and efficient application method.

Conclusions:

• Plasma jet printing is a viable technique for creating high-performance EMI shielding films.
• Graphene-based materials, particularly with copper, offer superior and eco-friendlier EMI shielding solutions.
• This approach facilitates rapid prototyping and application on various substrates for advanced electronic systems.