Functional colloidal mesostructures: From optics to thermal transport
Prof. Dr. Markus Retsch (University of Bayreuth)
Self-assembly is a powerful tool to access well-defined nanostructured materials, which exhibit unique mechanical, optical, or thermal properties. When working with colloidal latex or silica particles structural length scales from a few tens up to few micrometers can be addressed.
In his presentation, Prof. Retsch will elaborate on three topics. At first, he willl present the latest results of his group on the self-assembly process and nanostructured material fabrication itself. A new way to break the ever-occurring six-fold symmetry in colloidal monolayers and a new method to access transferable and free-standing nanostructures will be introduced.
Secondly, Prof. Retsch will demonstrate how nanohole arrays can be used for deterministic colloid immobilization and as an alternative to ITO in solar cells.
In the third part, he will talk about three-dimensional colloidal structures and their thermal transport properties. This is a rather underexplored field, yet, colloidal superstructures are ideally suited to design the thermal properties of nanostructured materials rationally. Recent results of Prof. Retsch's group show how to engineer highly insulating materials.
First results on switchable anisotropy and programmable temperature-dependent thermal conductivity pave the way towards intriguing thermal devices such as thermal diodes or switches.
Prof. Markus Retsch is Juniorprofessor for Polymer Systems at the University of Bayreuth. In 2013 he received a Lichtenberg professorship from the Volkswagen foundation and in 2016 an ERC starting grant. His current research interests lie in the investigation of materials for energy conservation and conversion, accessible with colloidal assembly strategies.
Controlled dynamic wetting and the influence of ionic mass transport in mesoporous films
Adnan Khalil (Project C04)
Date: June 8, 2018, 11:00-12:30
Venue: L2|06, Room 100