English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Contact Line Motion on Nanorough Surfaces: A Thermally Activated Process

Ramiasa, M., Ralston, J., Fetzer, R., Sedev, R., Fopp-Spori, D. M., Morhard, C., et al. (2013). Contact Line Motion on Nanorough Surfaces: A Thermally Activated Process. Journal of the American Chemical Society, 135(19), 7159-7171. doi:10.1021/ja3104846.

Item is

Files

show Files
hide Files
:
JACS_135_2013_7159.pdf (Any fulltext), 4MB
 
File Permalink:
-
Name:
JACS_135_2013_7159.pdf
Description:
-
Visibility:
Restricted (Max Planck Institute for Medical Research, MHMF; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-
:
JACS_135_2013_7159_Suppl.pdf (Supplementary material), 2MB
 
File Permalink:
-
Name:
JACS_135_2013_7159_Suppl.pdf
Description:
-
Visibility:
Restricted (Max Planck Institute for Medical Research, MHMF; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show
hide
Description:
-
Locator:
http://pubs.acs.org/doi/suppl/10.1021/ja3104846 (Supplementary material)
Description:
-
Locator:
https://dx.doi.org/10.1021/ja3104846 (Any fulltext)
Description:
-

Creators

show
hide
 Creators:
Ramiasa, Melanie, Author
Ralston, John, Author
Fetzer, Renate, Author
Sedev, Rossen, Author
Fopp-Spori, Doris M., Author
Morhard, Christoph1, Author              
Pacholski, Claudia1, 2, Author              
Spatz, Joachim P.1, 2, Author              
Affiliations:
1Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_2364731              
2Biophysical Chemistry, Institute of Physical Chemistry, University of Heidelberg, 69120 Heidelberg, Germany, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: The motion of a solid–liquid–liquid contact line over nanorough surfaces is investigated. The surface nanodefects are varied in size, density, and shape. The dynamics of the three-phase contact line on all nanorough substrates studied is thermally activated. However, unlike the motion of a liquid–vapor interface over smooth surfaces, this thermally activated process is not adequately described by the molecular kinetic theory. The molecular parameters extracted from the experiments suggest that on the nanorough surfaces, the motion of the contact line is unlikely to simply consist of molecular adsorption–desorption steps. Thermally activated pinning–depinning events on the surface nanodefects are also important. We investigate the effect of surface nanotopography on the relative importance of these two mechanisms in governing contact line motion. Using a derivation for the hysteresis energy based on Joanny and de Gennes’s model, we evaluate the effect of nanotopographical features on the wetting activation free energy and contact line friction. Our results suggest that both solid–liquid interactions and surface pinning strength contribute to the energy barriers hindering the three-phase contact line motion. For relatively low nanodefect densities, the activation free energy of wetting can be expressed as a sum of surface wettability and surface topography contributions, thus providing a direct link between contact line dynamics and roughness parameters.

Details

show
hide
Language(s): eng - English
 Dates: 2012-10-242013-04-222013
 Publication Status: Published in print
 Pages: 13
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/ja3104846
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of the American Chemical Society
  Other : J. Am. Chem. Soc.
  Abbreviation : JACS
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 135 (19) Sequence Number: - Start / End Page: 7159 - 7171 Identifier: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870