Imperial College London
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ProfessorAlexeiKornyshev

Faculty of Natural Sciences, Department of Chemistry

Professor of Chemical Physics
 
 
 
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Contact

 

+44 (0)20 7594 5786a.kornyshev Website CV

 
 
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Assistant

 

Mr John Murrell +44 (0)20 7594 2845

 
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Location

 

110Molecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Fajardo:2017:10.1021/acsnano.7b01835,
author = {Fajardo, OY and Bresme, F and Kornyshev, AA and Urbakh, M},
doi = {10.1021/acsnano.7b01835},
journal = {ACS NANO},
pages = {6825--6831},
title = {Water in Ionic Liquid Lubricants: Friend and Foe},
url = {http://dx.doi.org/10.1021/acsnano.7b01835},
volume = {11},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - To a greater or lesser extent, most room-temperature ionic liquids (RTILs) absorb water from humid air. Penetration of water into the lubricating nanoscale film may affect its equilibrium structure and dynamic properties and thus influence the ability of RTILs as lubricants to reduce friction between solid surfaces. Here we investigate the impact of hydration on lubrication using nonequilibrium molecular dynamics simulations. Water adsorption changes both the ionic liquid molecules’ orientation and the slip conditions at the solid–liquid interfaces, resulting in a reduced resistance against squeezing-out of the lubricant by an external load. For the same normal load, the film becomes thinner when water is present. We show that even small amounts of water can screen the electrostatic interactions between the ions, making RTILs more “fluid” and compressible and hence less resistant to external stress. The impact that screening has on friction involves several aspects that are systematically analyzed in this paper.
AU  - Fajardo,OY
AU  - Bresme,F
AU  - Kornyshev,AA
AU  - Urbakh,M
DO  - 10.1021/acsnano.7b01835
EP  - 6831
PY  - 2017///
SN  - 1936-0851
SP  - 6825
TI  - Water in Ionic Liquid Lubricants: Friend and Foe
T2  - ACS NANO
UR  - http://dx.doi.org/10.1021/acsnano.7b01835
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000406649700030&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/50890
VL  - 11
ER  -
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