Plasma-induced reaction at plasma-liquid and plasma-polymeric film interface by AC-driven atmospheric pressure plasma

Abstract

The authors drive a plasma-induced reduction reaction of the gold precursor by alternating current (AC)-driven atmospheric pressure plasma at the plasma-liquid interface. They systematically study the plasma-induced reaction at the plasma-liquid interface and observe that the reduction reaction is a proportionality relationship to the root mean square current of AC-driven atmospheric pressure plasma. Here, the technique has been applied to the plasma-polymeric film interface and demonstrates a direct writing technique to create the patterned metal nanoparticles. The authors find that the pattern properties are significantly related to the absorbed de-ionized (DI) water in the polymeric film. To prove their conceptual idea, the authors newly design an electrospun mat made of poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) and poly(styrene-block-butadiene-block-styrene) and control the absorption ability of de-ionized water and ethanol in a polymeric film. The results demonstrate that the absorbed DI water plays a key role in the plasma-induced reaction at the plasma-polymeric film.