Collaborative Research Center 1194
Interaction between Transport and Wetting Processes
1st funding period (July 1, 2016 – June 30, 2020)
The Collaborative Research Center (CRC) 1194 involves researchers from the TU Darmstadt and the Max Planck Institute for Polymer Research Mainz. Their common goal is the fundamental analysis of the interaction between transport and wetting processes – particularly when, parallel to momentum transport, also heat and mass transport, complex fluids or complex surfaces are involved.
What happens when surfaces are printed and coated with different liquids? What processes occur when a liquid meets a solid? How do wetting and dewetting depend on the local momentum, heat and mass transport processes? The underlying mechanisms of the interaction between these processes have to a large extent not been understood to date and are the focus of the Collaborative Research Centre (CRC) 1194. Although the physical phenomena take place only in a range of nanometres or micrometres, they often determine the efficiency of the overall process and the resulting product quality.
To date research in this area has focused on the dependence of the wetting process on the local fluid velocity at the contact line, i.e. wetting coupled with momentum transport. However serious deficits exist in our understanding when, parallel to momentum transport, also heat and mass transport are involved. These deficits become even more blatant when complex fluids are involved, e.g. suspensions or mixtures, or when complex surfaces are examined, e.g. rough or porous.
Fundamental processes and phenomena are examined over a wide range of length scales (nano-micro-macro) and the transfer of basic research to applications is an integral part of the research program. Overall the subject demands the use of very diverse methods and expertise from a multitude of disciplines.
The CRC is grouped into three research areas:
Upcoming Lectures & Events
Guest talk by Prof Steven Abbott
For those who need scientific solutions to their printing, coating or wetting problems help can be just an app away, with live demos covering, (de)wetting, (forced) drop spreading, dynamic surface tension, levelling, inkjet, evaporation and more. In his talk Prof Abbott will show that a large collection of free, easy-to-use apps covering many aspects of coating/printing makes it possible for the science to be used by everyone. go
Guest talk by Melanie M. Britton (School of Chemistry, University of Birmingham)
Nuclear magnetic resonance (NMR) spectroscopy is widely used by chemists to acquire information on the structure, interactions and dynamics of molecules. When the NMR signal is acquired in the presence of magnetic field gradients, the variety of chemical and physical information available by NMR becomes spatially-dependent, resulting in images which map and quantify chemical composition, physical environment and molecular motion. go
Guest talk by Markus Retsch (University of Bayreuth)
The PhD colloquium on June 8th comprises a guest talk by Prof. Dr. Markus Retsch (University of Bayreuth) entitled “Functional colloidal mesostructures: From optics to thermal transport”. Adnan Khalil (C04) will hold the subsequent CRC talk on gradually controlled wetting properties and its influence on ionic transport in mesoporous silica thin films. go
Redefining Boiling Phenomena – New understanding of the heat transfer mechanisms during pool and flow boiling
Talk by Satish G. Kandlikar (Rochester Institute of Technology, NY)
Prof. Satish Kandlikar will give a talk on recently identified mechanisms which have been exploited to provide a new level of boiling heat transfer enhancement. Prof. Kandlikar's recent work on pool and flow boiling has provided a mechanistic understanding of the boiling phenomena at microscale and produced enhancement structures dissipating exceptionally high heat fluxes along with very high heat transfer coefficients. go