Radius control of ceramic nano fiber synthesized from precursor polymer by two steps irradiation method using ion and electron beams

Sugimoto, Masaki; Yoshikawa, Masahito; Tsukuda, Satoshi*; Seki, Shuhei*

A ceramic nano fiber was synthesized from a thin film of precursor polymer using ion-beam irradiation techniques. We fabricate the new control method of the nanofiber radius using ion and electron beams irradiation. Polycarbosilane (PCS) film was irradiated by 490 MeV Os ion beams, subsequently, irradiated by 2 MeV EB. After irradiation, the thin film was developed by solvent, subsequent pyrolysis converted polymeric into inorganic SiC nano fibers. The radius of PCS nano fiber increased with the dose of EB irradiation. The two step irradiation method using ion and electron beams enables to increase the radius of the nano fiber; therefore it has been expected to be a standing nano fiber as high efficiency catalyst materials.