Sökning: onr:"swepub:oai:DiVA.org:su-128504" >
Effects of molecule...
Effects of molecule anchoring and dispersion on nanoscopic friction under electrochemical control
-
- de Wijn, Astrid S. (författare)
- Stockholms universitet,Fysikum
-
Fasolino, A. (författare)
-
Filippov, A. E. (författare)
-
visa fler...
-
Urbakh, M. (författare)
-
visa färre...
-
(creator_code:org_t)
- 2016-02-12
- 2016
- Engelska.
-
Ingår i: Journal of Physics. - : IOP Publishing. - 0953-8984 .- 1361-648X. ; 28:10
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- The application of electric fields is a promising strategy for in situ control of friction. While there have recently been many experimental studies on friction under the influence of electric fields, theoretical understanding is very limited. Recently, we introduced a simple theoretical model for friction under electrochemical conditions that focused on the interaction of a force microscope tip with adsorbed molecules whose orientation was dependent on the applied electric field. Here we focus on the effects of anchoring of the molecules on friction. We show that anchoring affects the intensity and width of the peak in the friction that occurs near a reorientation transition of adsorbed molecules, and explain this by comparing the strength of molecule-molecule and molecule-tip interactions. We derive a dispersion relation for phonons in the layer of adsorbed molecules and demonstrate that it can be used to understand important features of the frictional response.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- friction
- molecule geometry
- electrochemistry
- simple model
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas