Pulling adsorbed polymers from surfaces with the AFM: stick versus slip, peeling versus gliding

Details Pulling adsorbed polymers from surfaces with the AFM: stick versus slip, peeling versus gliding Pulling adsorbed polymers from surfaces with the AFM: stick versus slip, peeling versus gliding

2005-11-23

arxiv.org/abs/cond-mat/0511583v1

Physics

Condensed Matter

Soft Condensed Matter

6 pages, 3 figures; accepted for publication in Europhys. Lett., http://www.edpsciences.org/journal/index.cfm?edpsname=epl

Scientific paper

10.1209/epl/i2005-10379-4

We consider the response of an adsorbed polymer that is pulled by an AFM within a simple geometric framework. We separately consider the cases of i) fixed polymer-surface contact point, ii) sticky case where the polymer is peeled off from the substrate, and iii) slippery case where the polymer glides over the surface. The resultant behavior depends on the value of the surface friction coefficient and the adsorption strength. Our resultant force profiles in principle allow to extract both from non-equilibrium force-spectroscopic data.

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