Examination of Nanoparticles via Single Large Cluster Impacts

详细信息    查看全文

• 作者：S. Rajagopalachary ; S. V. Verkhoturov ; E. A. Schweikert
• 刊名：Nano Letters
• 出版年：2008
• 出版时间：April 2008
• 年：2008
• 卷：8
• 期：4
• 页码：1076 - 1080
• 全文大小：1224K
• 年卷期：v.8,no.4(April 2008)
• ISSN：1530-6992

文摘

This study deals with the determination of the relative abundance of the oxide layer in the near-surface volume of aluminum nanoparticles of 50–100 nm in diameter. They are bombarded with a sequence of single projectiles of Au₄₀₀⁴⁺ accelerated to 136 keV. The ionized ejecta from each impact are recorded individually which allows identification of ions emitted from a surface volume of ~10 nm in diameter and 5–10 nm in depth. The mode of analyzing ejecta individually from each single cluster impact is a means to apply mass spectrometry in nanovolumes.