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arXiv · 1206.6920

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

Kenji Ishikawa·Naoya Sumi·Akihiko Kono·Hideo Horibe·Keigo Takeda·Hiroki Kondo·Makoto Sekine·Masaru Hori
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Abstract

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.

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Kenji Ishikawa, Naoya Sumi, Akihiko Kono, Hideo Horibe, Keigo Takeda, Hiroki Kondo, Makoto Sekine, Masaru Hori. 2012-06-29. Synergistic Formation of Radicals by Irradiation with Both Vacuum Ultraviolet and Atomic Hydrogen: A Real-Time In Situ Electron Spin Resonance Study. https://doi.org/10.1021/jz2002937

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