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Mechano-chemical coupling to material surfaces: prediction and experiment

The microscopic mechanisms behind the coupling between the mechanics of material surfaces and the chemical states are not fully understood. A theory by which the strength of coupling for a given combination of surface and adsorbate could be predicted is not known. In addition, the surface tension in the reversible adsorption and desorption of light elements, as it is relevant for applications in actuators and sensors, has been little studied. In view of this, the research project aims at:

  1. the first determination of quantitative values for the coupling between capillary force and adsorption in the comparison between experiment and theory
  2. generalizable insights into the underlying microscopic mechanisms
project lead:Jörg Weißmüller
assistant project lead:Stefan Müller
colleagues:Lingzhi Lui
time span:01.04.2015 bis 31.10.2018
funding:DFG_WE1424/16-1

 

Publications:


J. Weissmüller
Mechano-Chemical Coupling Breaks with Expectations            
Nature Catalysis 1 (2018) 238 - 239.
https://www.nature.com/articles/s41929-018-0061-1

A. Michl, J. Weissmüller and S. Müller
Electrocapillary Coupling at Metal Surfaces from First Principles: On the Impact of Excess Charge on Surface Stress and Relaxation      
Langmuir 34 (2018) 4920 – 4928.
https://pubs.acs.org/doi/10.1021/acs.langmuir.7b04261

J. Weissmüller
Adsorption-Strain Coupling at Solid Surfaces
Current Opinion in Chemical Engineering, in press (2018).

Q. Deng, D. Gosslar, M. Smetanin and J. Weissmüller
Electrocapillary Coupling at Rough Surfaces
PhysChemChemPhys 17 (2015) 11725-11731.

Q. Deng, V. Gopal and J. Weissmüller
Less Noble or More Noble - How Strain Affects the Binding of Oxygen on Gold
Angewandte Chemie International Edition 127 (2015) 13173.