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|Author(s):||Frank W. DelRio; Cherno Jaye; Daniel A. Fischer; Robert F. Cook;|
|Title:||Elastic and adhesive properties of alkanethiol self-assembled monolayers on gold|
|Published:||March 30, 2009|
|Abstract:||Elastic and adhesive properties of alkanethiol (CH3(CH2)n 1SH) self-assembled monolayers on gold are investigated by atomic force microscopy and correlated with surface structure via near edge x-ray absorption fine structure spectroscopy. As the chain length n decreases from 18 to 5, the elastic modulus of the monolayer film, Ef, decreases from 1.0 GPa to 0.15 GPa and the work of adhesion, w, increases from 82.8 mJ m−2 to 168.3 mJ m−2. The Ef and w trends are interpreted in terms of the dichroic ratios, RI, which reveal distinct changes in chain orientation, order, and coverage over the range of n.|
|Citation:||Applied Physics Letters|
|Keywords:||atomic force microscopy, mechanical properties, self-assembled monolayers|
|PDF version:||Click here to retrieve PDF version of paper (373KB)|