Spontaneous assembly of perfectly ordered identical-size nanocluster arrays
Spontaneous assembly of perfectly ordered identical-size nanocluster arrays
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完美有序的相同尺寸纳米团簇阵列的自发组装
DOI：
10.1103/physrevlett.88.066101
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发表时间：
2002-02-11
影响因子：
8.6
通讯作者：
Zhang, SB
中科院分区：
文献类型：
--
作者：
Li, JL;Jia, JF;Zhang, SB
报道了一种利用表面诱导的团簇效应自发地获得具有纳米尺寸和间距的相同金属团簇的周期性二维阵列的方法。该方法对Si(111)-(7×7)衬底上的多种金属都具有很好的通用性。In团簇的原位扫描隧道显微镜分析，结合第一性原理的总能量计算，揭示了表面支撑团簇独特的初始原子结构以及导致该方法成功的关键步骤。星团和表面之间的强烈相互作用是观测到的星团大小的关键。
A method, by which periodic two-dimensional arrays of identical metal clusters of nanometer size and spacing could be spontaneously obtained by taking advantage of surface mediated clustering, is reported. The versatility of the method is demonstrated for a broad range of metals on Si(111)-(7 X 7) substrates. In situ scanning tunneling microscopy analysis of In clusters, combined with first-principles total energy calculations, unveils unique initial-stage atomic structures of the surface-supported clusters and the vital steps that lead to the success of this method. A strong interaction between the clusters and the surface holds the key to the observed cluster sizes.