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In this work,the successful deposition of acrylic acid polymer (PAA) nano-cones on the inner surface of a polyvinyl chloride (PVC) tube using an atmospheric pressure plasma jet (APPJ) with acrylic acid (AA) monomer is presented.Optical emission spectroscopy (OES) measurements indicated that various reactive radicals,such as.OH and.O,existed in the plasma jet.Moreover,the pulsed current proportionally increased with the increase in the applied voltage.