Gold-filled apo-ferritin for investigation of single-walled carbon nanotube growth on substrate
- 作者：Daisuke Takagi ; Akira Yamazaki ; Yasuyuki Otsuka ; Hideyuki Yoshimura ; Yoshihiro Kobayashi ; Yoshikazu Homma
- 关键词：Cosmic-ray proton ; Cosmic-ray helium ; Atmospheric proton ; Solar modulation ; Superconducting spectrometer
- 刊名：Chemical Physics Letters
- 出版年：2007
- 期刊代码：7_00092614
- 类别：ph
- 出版时间：13 September 2007
- 卷：445
- 期：4-6
- 页码：213-216
- 文件大小：809 K
摘要
We formed Au nanoparticles of 5 nm or less in diameter in the cavity of apo-ferritin (Au-ferritin). The Au nanoparticle in Au-ferritin exhibited catalysis for the synthesis of single-walled carbon nanotube (SWCNT) by chemical vapor deposition on various substrates. One-to-one correspondence of the grown SWCNT and the Au catalyst was confirmed by scanning electron microscopy (SEM) utilizing the high secondary electron yield of Au. In SEM images, it was possible to distinguish the SWCNT growth modes from metal catalysts, whether the catalyst particle was at the growth front or root, by placing Au-ferritin particles in a specified area.