Nanomanipulation of ligand-stabilized Au sub(55) clusters by means of scanning tunneling microscopy

Nanomanipulation of ligand-stabilized Au sub(55) clusters by means of scanning tunneling microscopy

We have investigated ligand-stabilized Au sub(55) clusters by means of scanning tunneling microscopy (STM) at room temperature on highly oriented pyrolytic graphite (HOPG) and other substrates. Single clusters or groups of several clusters were transferred between sample and STM tip using convention...

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Veröffentlicht in:Advanced functional materials 2001-06, Vol.11 (3), p.202-207
Hauptverfasser: Herrmann, Michael, Koltun, Robert, Kreibig, Uwe, Schmid, Gunter, Guntherodt, Gernot
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container_title Advanced functional materials
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creator Herrmann, Michael
Koltun, Robert
Kreibig, Uwe
Schmid, Gunter
Guntherodt, Gernot
description We have investigated ligand-stabilized Au sub(55) clusters by means of scanning tunneling microscopy (STM) at room temperature on highly oriented pyrolytic graphite (HOPG) and other substrates. Single clusters or groups of several clusters were transferred between sample and STM tip using conventional voltage pulses. With a new variant of voltage pulses called "field-emission pulses", cluster shells were partly destroyed by heating with the field-emission current, resulting in a "hardening" of the cluster layer. HOPG substrate surfaces with most of the clusters removed exhibit "pearl chains" of clusters attached to step edges.
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title Nanomanipulation of ligand-stabilized Au sub(55) clusters by means of scanning tunneling microscopy
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