Copper/Carbon Fiber Wire Offers Lightweight EMI Shielding with 2.4× Specific SE
A study published in the Journal of Materials Science: Materials in Electronics (May 2026) presents a scalable roll-to-roll fabrication method for lightweight, high-durability copper/carbon fiber wire for cable electromagnetic shielding .
Technical Innovation:
Developed slitting-Cu/carbon fiber tape (s-Cu/CF-T) via a one-step roll-to-roll process
Integrated lightweight carbon fibers with highly conductive Cu films using a polyurethane binder
Achieved high-performance shielding material with both structural integrity and exceptional flexibility
Performance Results:
Metric | Performance |
|---|---|
Average EMI Shielding Effectiveness (500-3000 kHz) | 49.3 dB |
Specific Shielding Effectiveness | 17.9 dB cm³/g (~2.4× conventional Cu braided cable) |
SE Decrease After Cyclic Bending | 3.2% (vs. 6.6% for conventional Cu braids) |
Applications:
Electric vehicles (EVs)
Aerospace systems
Robotics
Traditional tin-plated Cu braids exhibit high weight and limited fatigue resistance—this new material addresses both limitations .
