TITLE

TEMPERATURE-INDUCED SURFACE STRUCTURE TRANSFORMATION OF SELF-ASSEMBLED MONOLAYERS ON Au(111):: A VARIABLE TEMPERATURE STM STUDY

AUTHOR(S)
Guo, Q.; Sun, X.; Palmer, R. E.
PUB. DATE
October 2005
SOURCE
International Journal of Nanoscience;Oct-Dec2005, Vol. 4 Issue 5/6, p863
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The structural transformations of self-assembled dodecanethiol monolayers on the Au(111) surface have been studied using variable temperature scanning tunnelling microscopy (STM) in vacuum. Dark lines were observed to form at 350 K, followed by the completion of a rather regular zebra-stripe pattern at 360 K. The stripes have three distinct orientations, reflecting the three-fold symmetry of the substrate. There is continuous material transfer between the stripes at 360–390 K, leading to a constant change of shape of the individual stripes. The average width of the strips stays rather constant at ~ 5 nm. At 390 K, the zebra-stripe structure becomes unstable due to the desorption of thiol molecules.
ACCESSION #
19731821

 

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