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Silicon nanotubes are nanoparticles which create a tube-like structure from silicon atoms. They are technologically important because bulk silicon is the key material in the semiconductor industry.〔 〕 First reports on silicon nanotubes appeared around the year 2000.〔 〕 ==Synthesis== One method to prepare silicon nanotubes is using a reactor employing an electric arc without the use of any catalyst.〔 〕 To ensure purity, the reactor is evacuated and filled with the nonreactive noble gas argon. The actual formation of the nanotubes relies on the process of chemical vapor deposition.〔 〕 A more common laboratory-scale method involves using germanium or zinc oxide nanowires as a template. Silicon, coming typically from either silane or silicon tetrachloride gas, is then deposited onto the nanowires, and the core is dissolved leaving behind a silicon tube.〔 〕 The growth of template nanowires, silicon deposition and nanowire etching, and consequently the geometry of resulting Si nanotubes, can be accurately controlled in the second method; however, the smallest inner diameter is limited by tens of nanometers.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Silicon nanotube」の詳細全文を読む スポンサード リンク
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