Iron nanofibers synthesized by the electrospinning method for use as a GHz band electromagnetic wave absorber.
In this study, we fabricated Fe nanofibers that had a high aspect ratio and were coated by an oxidation protection layer, because electromagnetic properties are affected by the aspect ratio and oxidized layers. PVP/Fe salt nanofibers were prepared by an electrospinning method using an optimized concentration of PVP solution with Iron(lll) nitrate nonahydrate (Fe (NO3)3.9H2O) solution to apply a high voltage. Subsequently, to prepare the Fe nanofibers, the PVP/Fe salt nanofibers were heated up to 600 degrees C in air and reduced to 450 degrees C in H2. The Fe nanofibers were then coated by PVP to prevent re-oxidation. The S-parameter of the prepared Fe nanofibers was measured by a network analyzer, and the power loss was calculated to estimate the EM absorption ability.
Song
Hanbok
H
Department of Fine Chemical Engineering, Hanyang University, Ansan 426-791, Korea.
Lee
Kun-Jae
KJ
Kim
Ki Hyeon
KH
Oh
Sung-Tag
ST
Lee
Sang-Kwan
SK
Choa
Yong-Ho
YH