240 平成19年 2 月23日 日本真空協会 2 月研究例会・日本表面科 学会第53回表面科学研究会で発表  1 豊橋技術科学大学(〒441 8580 豊橋市天伯町字雲雀ケ丘1 1) 解 説 This paper outlines the preparation methods and feasible applications of new nano-carbon materials; helical carbon nanoˆber (HCNF), carbon nanohorn (CNH), and carbon nanoballoon (CNB). The HCNF isˆbrilliform carbon materials with spiral and twisted shapes. The HCNF is divided into the groups of carbon nanocoil (CNC) and nanotwist (CNTw). They are synthesized by means of catalytic chemical vapor

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... eposition (catalytic-CVD) with diŠerent catalysts. One of their applications isˆeld emitter for next-generation plat panel display. The CNH is a particulate-form material and is produced by the evaporation of graphite with a laser or an arc discharge. The one of possible applications is the catalyst-supported electrode for fuel cell. The CNB is synthesized from an arc soot (or called arc black) and also from a particular-type acetylene black by means of high-temperature treatment under inert gas. Its potential applications are mentioned.