Swift heavy ion induced formation of nanocolumns of C clusters in a Si based polymer
Swift heavy ion induced formation of nanocolumns of C clusters in a Si based polymer
复制标题
快速重离子诱导硅基聚合物中碳簇纳米柱的形成
作者：
S. K. Srivastava;D. Avasthi;E. Pippel
通过在 2 × 1012 和 5 × 1012 离子 cm−2 的注量下用 100 MeV Au 离子照射薄膜，可以在硅基无机聚合物烯丙基氢化聚碳硅烷 (HPCS) 薄膜中形成 C 簇纳米柱。通过能量过滤截面透射电子显微镜研究了 C 团簇在受到辐照注量时的演化和排列。辐照导致尺寸≤5 nm的C簇的演化，并且它们沿着直径~10 nm的通道排列，这些通道本质上是聚合物中Au离子产生的潜在轨道。在 5 × 1012 个离子 cm−2 的注量下，这些团簇在通道中变得密集。这种C簇填充的纳米柱的生长被证明是在潜迹的瞬态熔融相期间同时发生的两个扩散过程的结果。
The formation of nanocolumns of C clusters in thin films of a Si based inorganic polymer, allylhydridopolycarbosilane (HPCS), as a result of irradiation of the films with 100 MeV Au ions at fluences of 2 × 1012 and 5 × 1012 ions cm−2 is demonstrated. The evolution and arrangement of the C clusters while subjected to the irradiation fluence is investigated by energy filtered cross-sectional transmission electron microscopy. Irradiation results in evolution of C clusters of sizes ≤5 nm, and their alignment along channels of ∼10 nm diameter, which are essentially the latent tracks created by the Au ions in the polymer. At the fluence of 5 × 1012 ions cm−2, these clusters become densely packed in the channels. The growth of such C cluster filled nanocolumns is shown to be a consequence of two simultaneous diffusion processes taking place during the transient molten phase of the latent tracks.