大气压等离子体射流（APPJ）富含活性成分、工作于开放气体氛围、输送大量活性粒子至处理对象等优点，在材料处理、生物医学等领域有重要应用潜力。深入挖掘均匀APPJ的特性调控及其与聚合物薄膜表面相互作用，在等离子体与材料相互作用机理研究及应用方面具有前瞻性意义。项目基于前期基础，利用产生的均匀APPJ对聚乙烯（PE）和聚酰亚胺（PI）薄膜进行表面改性，以期提高薄膜表面能，改善其表面粘附特性；结合仿真模型研究APPJ在交互区及薄膜表面发展和演化行为，利用发射、激光诱导荧光和吸收光谱实时测量交互区等离子体的光学辐射特性，获得活性粒子的时空分布；利用电光效应测量APPJ工作时薄膜表面沉积电荷的分布及演化，反演电场演化规律；采用弱光探测系统研究APPJ诱导薄膜表面的发光特性。通过本项目研究，旨在探明均匀APPJ与聚合物材料表面作用的内在机制，助力材料表面功能化及绝缘材料耐电性能改善等研究的进一步发展。

Atmospheric pressure plasma jet (APPJ), which has many advantages such as rich active species, working in open ambient and transporting active species flux to object, has potential application in materials modification and biomedicine fields. In interaction mechanism research of plasma with materials and APPJ’s applications, exploring the uniform APPJ’s characteristic modulation and interaction of APPJ with polymer films has prospective meaning. Based on our previous works, the generated uniform APPJ is employed in this project to perform surface modifications to PE and PI films, in order to improve their surface energy, surface adhesion and so on. This project is willing to investigate the propagation and evolution behavior of APPJ in interactive region and film surface by combining experimental observation with simulation analysis. Some novel in situ diagnosis techniques are introducing in this project. Different spectrum (emission, laser-induced fluorescence, and absorption) are utilized to measure optical radiation properties of APPJ in real time and obtain the spatio-temporal distribution of active species. Pockels effect is employed to capture distribution and evolution of deposited charges in film surface when APPJ works and deduce the evolution behavior of electric field. Weak light detection system is adapted to collect luminescence of film surface induced by the APPJ. In the end of the research, we hope to explain the interaction mechanism between APPJ and polymer surface. The results would be hoped to promote the further development for the investigation of material surface functionalization and insulation material electrical characteristics improvement.