Spontaneous Assembly of Perfectly Ordered Identical-Size Nanocluster Arrays
Jianlong LiState Key Laboratory for Surface Physics and International Center for Quantum Structures, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, ChinaJinfeng JiaState Key Laboratory for Surface Physics and International Center for Quantum Structures, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, ChinaXuejin LiangState Key Laboratory for Surface Physics and International Center for Quantum Structures, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, ChinaXi LiuState Key Laboratory for Surface Physics and International Center for Quantum Structures, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, ChinaJun‐Zhong WangState Key Laboratory for Surface Physics and International Center for Quantum Structures, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, ChinaQi‐Kun XueInstitute of PhysicsZhiqiang LiSteacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, K1A 0R6, CanadaJohn S. TseSteacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, K1A 0R6, CanadaZhenyu ZhangOak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6032Shengbai ZhangNational Renewable Energy Laboratory, Golden, Colorado 80401
2002en
ABI
Аннотация
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.
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