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The formation of microprotuberances on poly(tetrafluoroethylene) (PTFE) sheet by using synchrotron radiation (SR) was investigated. The PTFE surfaces irradiated by SR were observed with scanning electron microscope. The microprotuberances were formed on the PTFE surface by SR exposure at a substrate temperature over 150°C. On the other hand, they were not observed at a substrate temperature of under...
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