The new subproject C07 which has started with the second funding period is the result of findings from C03 during the first funding period. There, a method was developed with which the force required to move a drop over a surface can be measured directly. With this method inhomogeneities on surfaces can be characterized and the dynamic contact angles can be measured. In C07, the method is to be further developed and established as a multifunctional measuring device. In addition, scientific questions are to be clarified regarding the role of defects, impurities or an electric charge in contact angle hysteresis.
This project starts July 1, 2020.
|Prof. Dr. Hans-Jürgen Butt|
+49 6131 379-111
|Dr. Rüdiger Berger|
Geyer, Florian and D’Acunzi, Maria and Sharifi-Aghili, Azadeh and Saal, Alexander and Gao, Nan and Kaltbeitzel, Anke and Sloot, Tim-Frederik and Berger, Rüdiger and Butt, Hans-Jürgen and Vollmer, Doris (2020):
When and how self-cleaning of superhydrophobic surfaces works.
In: Science Advances, 6, (3), American Association for the Advancement of Science, pp. eaaw9727, ISSN 2375-2548,
Stetten, Amy Z. and Golovko, Dmytro S. and Weber, Stefan A. L. and Butt, Hans-Jürgen (2019):
Slide electrification: charging of surfaces by moving water drops.
In: Soft Matter, 15, (43), pp. 8667-8679, ISSN 1744-683X,
Sun, Qiangqiang and Wang, Dehui and Li, Yanan and Zhang, Jiahui and Ye, Shuji and Cui, Jiaxi and Chen, Longquan and Wang, Zuankai and Butt, Hans-Jürgen and Vollmer, Doris and Deng, Xu (2019):
Surface charge printing for programmed droplet transport.
In: Nature Materials, 18, (9), pp. 936-941, ISSN 1476-1122,
Gao, Nan and Geyer, Florian and Pilat, Dominik W. and Wooh, Sanghyuk and Vollmer, Doris and Butt, Hans-Jürgen and Berger, Rüdiger (2018):
How drops start sliding over solid surfaces.
In: Nature Physics, 14, (2), pp. 191-196, ISSN 1745-2473,
Pilat, D. W. and Papadopoulos, P. and Schaeffel, D. and Vollmer, D. and Berger, R. and Butt, H.-J. (2012):
Dynamic Measurement of the Force Required to Move a Liquid Drop on a Solid Surface.
In: Langmuir, 28, (49), pp. 16812-16820, ISSN 0743-7463,