Frictional properties of two alkanethiol self assembled monolayers in sliding contact: Odd-even effects

2012 ◽  
Vol 137 (17) ◽  
pp. 174706 ◽  
Author(s):  
Leyla Ramin ◽  
Ahmad Jabbarzadeh
Keyword(s):  
Sliding Contact ◽  
Self Assembled Monolayers ◽  
Frictional Properties ◽  
Assembled Monolayers ◽  
Self Assembled

Odd-Even Effects on Tribology of Self Assembled Monolayers

2011 ◽  
Author(s):  
Leyla Ramin ◽  
Ahmad Jabbarzadeh
Keyword(s):  
Molecular Dynamics ◽  
Friction Coefficient ◽  
Molecular Dynamics Simulations ◽  
Strong Evidence ◽  
Self Assembled Monolayers ◽  
Frictional Properties ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Dynamics Simulations

We have conducted molecular dynamics simulations to study the frictional properties of alkanethiols on Au(111) surfaces, under various loading and shearing conditions. For alkanethiols we find the film responds to increased loading initially by increasing the tilt and then by deformation of individual molecules. We find strong evidence of the friction coefficient being dependent on the number of carbon atoms in the molecule being odd or even. Odd alkanethiols show consistently higher friction coefficient. The structural origin of this odd-even effect observed under various sliding velocities has been discussed.

scholarly journals Effects of Surface Chemical Properties on the Frictional Properties of Self-Assembled Monolayers Lubricated with Oleic Acid

2012 ◽  
Vol 7 (4) ◽  
pp. 218-224 ◽  
Author(s):  
Koji Miyake ◽  
Takamasa Kume ◽  
Miki Nakano ◽  
Atsushi Korenaga ◽  
Koji Takiwatari ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Chemical Properties ◽  
Self Assembled Monolayers ◽  
Surface Chemical ◽  
Frictional Properties ◽  
Assembled Monolayers ◽  
Self Assembled
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