BM FO-PVDF elect rospun fiber based t unable met amat erial st ruct ures for elect romagnet ic int erference shielding in microwave frequency region
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2016-01-07T11:17:17Z
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Abstract
Met amat erial st ruct ures are art ificial st ruct ures t hat are useful in controlling t he flow of elect romagnet ic radiat ion. In t his paper, composit e fibers of sub-micron t hickness of barium subst it ut ed magnesium
ferrit e (Ba0.2Mg0.8 Fe2O4 ) – polyvinylidene fluoride obt ained by elect rospinning is used as a subst rat e
t o design elect romagnet ic int erference shielding st ruct ures. While elect rospinning improves t he ferroelect ric
propert ies of t he polyvinylidene fluoride, t he presence of barium magnesium ferrit e modifies t he magnet ic
property of t he composit e fiber. T he dielect ric and magnet ic propert ies at microwave frequency measured
using microwave cavity pert urbat ion t echnique are used t o design t he reflect ion as well as absorpt ion based
t unable met amat erial st ruct ures for elect romagnet ic int erference shielding in microwave frequency region.
For one of t he st ruct ures, t he simulat ion indicat es t hat single negat ive met amat erial st ruct ure becomes a
double negat ive met amat erial under t he ext ernal magnet ic field.
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BM FO-PVDF elect rospun fiber based t unable met amat erial st ruct ures for elect romagnet ic int erference shielding in microwave frequency region, Venkat achalam Revathi, Sakt hivel Dinesh Kumar, Venkat achalam Subramanian