CNFs from linseeds oil: a potential source of X-band microwave absorbers

Abstract

Carbon nano fibers (CNFs) were synthesized at high temperatures using natural linseeds oil. Microwave conductivity and return loss in X-band for thick films of randomly oriented population of CNFs have been explored for their ability as a potential microwave absorber in 8 GHz to 12 GHz range with return loss between −18 dB and −32 dB. Study of electrical resistance and shielding effectiveness (SE) shows that CNFs films also have the capability of obstructing the passage of microwave frequency with a shielding effectiveness of −29 dB to −40 dB.