Difference between revisions of "How friction diminishes at the nanoscale"

From apm
Jump to: navigation, search
m
(reformulation giving more context + removal of doubled words)
Line 10: Line 10:
 
Its about the issue that in systems small enough  
 
Its about the issue that in systems small enough  
 
* there are few degrees of freedom for energy to be dispersed into (thermalized/devaluated/dissipated) and
 
* there are few degrees of freedom for energy to be dispersed into (thermalized/devaluated/dissipated) and
−
* there can be the quantum effect of a minimum activation energy that needs to be overcome before a degree of freedom becomes available. (This can be seem in the heat capacity of polyatomic gases where steps represent the "quantum activation" of degrees of freedom).
+
* there can be the quantum effect of a minimum activation energy that needs to be overcome before a degree of freedom becomes available. <br>(This can be seem in the plots of heat capacity over temperature for polyatomic gases where steps represent the "quantum activation" of degrees of freedom).
  
−
{{wikitodo|Elaborate on that here. A lot is in the in the as of yet unpublished ReChain zim-wiki}}
+
{{wikitodo|Elaborate on that here. A lot is in the as of yet unpublished ReChain zim-wiki}}
  
 
== Related ==
 
== Related ==

Revision as of 12:57, 21 August 2021

This article is a stub. It needs to be expanded.

Wrong! you think?
Well yes, in the context of rising surface area friction really does rise when going down to the the nanoscale, but ...

  • ... that is only if we'd fill up a whole macroscopic volume densely with nanomachinery (not necessary in convergent assembly) and
  • ... in other regards it shrinks.

First there is superlubricity,
but there are other perhaps more deep reasons for friction to diminish at the nanoscale. Its about the issue that in systems small enough

  • there are few degrees of freedom for energy to be dispersed into (thermalized/devaluated/dissipated) and
  • there can be the quantum effect of a minimum activation energy that needs to be overcome before a degree of freedom becomes available.
    (This can be seem in the plots of heat capacity over temperature for polyatomic gases where steps represent the "quantum activation" of degrees of freedom).

(wiki-TODO: Elaborate on that here. A lot is in the as of yet unpublished ReChain zim-wiki)

Related

Retrieved from "http://apm.bplaced.net/w/index.php?title=How_friction_diminishes_at_the_nanoscale&oldid=11833"