A flexible electromagnetic metamaterial absorber with the characteristics of textile textured meta-surface and dielectric lossy layer

To realize the effective electromagnetic (EM) protection, the demand of large-scale production and desirable flexibility for metamaterial absorber (MA) has been a hotspot. In this work, a flexible MA with the characteristics of textile textured meta -surface, dielectric lossy layer and temperature-strengthened reflective layer is prepared by means of chemical plating and laser-induced graphene (LIG) techniques. Co-Ni metallized CNTs and PEDOT:PSS are combined to form magneto-dielectric synergy for attenuation in medium layer, and the superiorities of fabric as substrate to enhance EM absorption in top layer is validated. The structural parameters of MA are optimized via CST stimulation, and the as-prepared MA exhibits a minimum reflection loss (RL) of −26.4 dB and an effective absorption band (EAB) of 8.0 GHz, with the radar cross section (RCS) bandwidth of 7.4 GHz in the X band (2–18 GHz), delivering a promising potential for radar stealth.