1 Ligand-Free Sub-Nanometer Metal Clusters in Catalysis
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Fig. 1.2 A sequence of STM images taken during the construction of a patterned array of xenon
atoms on a nickel (1 1 0) surface. The atomic structure of the nickel surface is not resolved. The
h1 1 0i direction of the surface runs vertically. a The surface after xenon dosing, b–f various stages
during the construction of the word IBM. Each letter is 50 (Å) from top to bottom
Fig. 1.3 Scheme of the size-dependent characteristics of metallic chemical elements, here
illustrated for gold
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Fig. 1.2 A sequence of STM images taken during the construction of a patterned array of xenon
atoms on a nickel (1 1 0) surface. The atomic structure of the nickel surface is not resolved. The
h1 1 0i direction of the surface runs vertically. a The surface after xenon dosing, b–f various stages
during the construction of the word IBM. Each letter is 50 (Å) from top to bottom
Fig. 1.3 Scheme of the size-dependent characteristics of metallic chemical elements, here
illustrated for gold