Polyvinyl alcohol–potassium iodide gel probe to monitor the distribution of reactive species generation around atmospheric-pressure plasma jet  

作　　者：Trung Nguyen TRAN Min HU Tomohiro OGASAWARA Yuki IWATA Haruka SUZUKI Jin SAKAMOTO Masafumi AKIYOSHI Hirotaka TOYODA Hiroto MATSUURA 

机构地区：[1]Department of Quantum and Radiation Engineering,Osaka Prefecture University [2]Department of Electronics,Nagoya University [3]Faculty of Chemistry,Materials and Bioengineering,Kansai University [4]Department of Quantum and Radiation Engineering,Osaka Metropolitan University

出　　处：《Plasma Science and Technology》2023年第3期78-86,共9页等离子体科学和技术（英文版）

基　　金：partially supported by the ZE Research Program IAE(No.ZE2021B-27);the joint usage/research program cLPS(No.21020)。

摘　　要：This study proposes polyvinyl alcohol–potassium iodide(PVA–KI)as a novel gel chemical probe.The probe uses the reactions among PVA,KI,water,borax,and oxidative species to visualize the distribution of reactive species.This method provides information regarding the distribution of reactive species by coloration on the gel surface.The effects of the surrounding gas phase on the distribution and diffusion of the reactive species are also investigated using the PVA–KI gel probe.Further,the relationship between the irradiation distance and reactive species diffusion is determined on the surface of the PVA–KI probe with and without plastic shielding.Adjusting the irradiation distance appropriately leads to an increase in the modified area as detected by the PVA–KI gel probe analysis.The relative concentration distributions of the reactive species are also obtained from visualized color distributions measured using a colorimeter.Furthermore,reactive species generation by long-scale line plasma is confirmed by the color reaction on the PVA–KI gel surface,with a greater area being covered by an atmospheric-pressure pulsed microwave line plasma source.

关 键 词：atmospheric-pressure plasma jet(APPJ) PVA–KI gel chemical probe argon plasma jets 

分 类 号：O539[理学—等离子体物理] TQ427.26[理学—物理]