Aligning one-dimensional arrays of nanoclusters on a thin film of Al2O3 grown on vicinal NiAl surfaces

作者：Luo M F^*; Huang J Y; Chiang C I; Hu G R; Wang C C; Wang C T; Lin C W

来源：Surface Science, 2009, 603(3): 558-565.

DOI：10.1016/j.susc.2008.12.017

• Al2O3 thin film
• Vicinal NiAl
• Nanoclusters
• 1D arrays
• STM
• LEED

We present a self-organised approach for the synthesis of one-dimensional (1D) arrays of supported nanoclusters. By oxidising NiAl surfaces vicinal to the (100) plane tilted along the crystallographic direction [010], we produced ordered thin films of theta-Al2O3 that exhibit uniform protrusion stripes propagating uniquely along direction [001] of the NiAl. These protrusions are preferential centres for nucleation of metal deposited from a vapour; the nanoclusters grown from such metal are aligned and form massive 1D cluster arrays along direction [001]. The arrays of Co nanoclusters exhibit a diameter as small as 3 nm and length exceeding a micrometer. The results imply prospective applications for which a patterned assembly of nanoclusters is desired.

• 出版日期2009-2-1
• 单位中央民族大学