Effect of rotating liquid samples on dynamic propagation and aqueous activation of a helium plasma jet  

作　　者：Han XU Shaoshuai GUO Hao ZHANG Kai XIE 徐晗;郭韶帅;张浩;谢楷(School of Aerospace Science and Technology,Xidian University,Xi'an 710071,People's Republic of China;State Key Laboratory of Electrical Insulation and Power Equipment,Centre for Plasma Biomedicine,Xi'an Jiaotong University,Xi'an 710049,People's Republic of China)

机构地区：[1]School of Aerospace Science and Technology,Xidian University,Xi'an 710071,People's Republic of China [2]State Key Laboratory of Electrical Insulation and Power Equipment,Centre for Plasma Biomedicine,Xi'an Jiaotong University,Xi'an 710049,People's Republic of China

出　　处：《Plasma Science and Technology》2022年第8期91-97,共7页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(No.52107162);the Science and Technology Projects of Shaanxi Province(No.2022CGBX12);the Science and Technology Projects of Xi’an City(No.2021SFCX0005)。

摘　　要：This paper aims to explore the effects of a rotating plasma-activated liquid on the dynamic propagation and biomedical application of a helium plasma jet.The spatial distribution of reactive species and the associated physico-chemical reactions are altered by the rotating liquid,which shows a significant weakening in the axial propagation of the plasma bullet and a strengthening in its radial expansion at the liquid surface.The phenomenon is prompted by the nonzero rotational velocity of the liquid and is regulated by airflow,target distance and liquid permittivity.The concentrations of aqueous reactive species,especially OH and O~-,and the inactivation effectiveness on cancer cells are weakened,indicating that a rotating liquid is not conducive to water treatment of the plasma jet although the treatment area of the plasma jet increases dynamically.This finding is of significance for the plasma–liquid interaction and the biomedical-related applications of plasma jets.

关 键 词：atmospheric-pressure plasma jet plasma–liquid interaction reactive species biological inactivation function 

分 类 号：O53[理学—等离子体物理]