New Electromagnetic Interference Shielding Materials: Biochars, Scaffolds, Rare Earth, and Ferrite-Based Materials

Area of Science:

• Materials Science
• Electromagnetics
• Nanotechnology

Background:

• Electromagnetic interference (EMI) poses challenges in electronic devices.
• Development of effective EMI shielding materials is crucial for technological advancement.
• Existing materials often face limitations in performance, weight, or environmental impact.

Purpose of the Study:

• To systematically review recent advances in novel EMI shielding materials.
• To compare the performance of organic (biochars, scaffolds) and inorganic (rare earth, ferrite) materials.
• To discuss preparation methods, shielding principles, and application prospects.

Main Methods:

• Comprehensive literature review and systematic analysis.
• Classification and trend analysis of new EMI shielding materials.
• Comparative study of shielding effectiveness for selected material groups.

Main Results:

• Biochars and scaffolds show promise as lightweight, eco-friendly EMI shielding solutions.
• Rare earth materials offer high electromagnetic wave absorption due to unique electronic properties.
• Ferrite-based materials, when combined, enhance shielding, mechanical, and conductive properties.

Conclusions:

• Novel organic and inorganic materials present diverse strategies for EMI shielding.
• Further research is needed to address current challenges and optimize material development.
• Future outlook focuses on guidelines for developing and applying advanced EMI shielding materials.