标题： 真空紫外光和原子氢照射下自由基的协同形成：实时原位电子自旋共振研究 显示英文标题

标题： Synergistic Formation of Radicals by Irradiation with Both Vacuum Ultraviolet and Atomic Hydrogen: A Real-Time In Situ Electron Spin Resonance Study

摘要： 我们报告了聚四氟乙烯（PTFE）的表面改性，作为等离子体放电下软材料和生物材料的一个例子，通过使用原位实时电子自旋共振（ESR）测量进行自由基形成的动力学分析。 在氢等离子体照射期间，同时测量了原子氢的气相ESR信号和PTFE上的碳悬键（C-DB）。 实时观察到了C-DB密度的动态变化，其中密度变化的速率在初始照射期间加快，随后随时间变得恒定。 值得注意的是，C-DB是通过真空紫外（VUV）和原子氢的共同照射协同形成的。 原位实时ESR技术有助于阐明等离子体表面改性过程中的协同作用。 显示英文摘要

摘要： We report on the surface modification of polytetrafluoroethylene (PTFE) as an example of soft- and bio-materials that occur under plasma discharge by kinetics analysis of radical formation using in situ real-time electron spin resonance (ESR) measurements. During irradiation with hydrogen plasma, simultaneous measurements of the gas-phase ESR signals of atomic hydrogen and the carbon dangling bond (C-DB) on PTFE were performed. Dynamic changes of the C-DB density were observed in real time, where the rate of density change was accelerated during initial irradiation and then became constant over time. It is noteworthy that C-DBs were formed synergistically by irradiation with both vacuum ultraviolet (VUV) and atomic hydrogen. The in situ real-time ESR technique is useful to elucidate synergistic roles during plasma surface modification.