Tuesday 10 December 2024 2:30pm to 3:30pm
Todd Hamied room, Yusuf Hamied Department of Chemistry
About
MATERIALS RIG SEMINAR
Speaker: Prof. Stephan Sylvest Keller, Head of Biomaterial Microsystems group at DTU Nanolab,
at the National Centre for Nano Fabrication and Characterization, Technical University of Denmark.
Abstract: In the past decade, we have gradually expanded our toolbox for fabrication of 3D pyrolytic carbon micro- and nanoelectrodes exploring methods such as multi-layer UV photolithography, additive manufacturing and direct laser writing. More specifically, we developed processes for fabrication of polymer micro- and nanostructures followed by conversion into carbon by pyrolysis at high temperature in inert atmosphere. This allows us to tailor electrode dimensions and properties from the nm- to the cm-scale. I will give an overview of our recent advances in carbon micro- and nanofabrication.
Furthermore, I will provide a few examples where we explore our process-toolbox to develop electrochemical platforms for applications in health tech and life science. These will include a 3D in vitro bone tissue model with integrated sensing, optoelectrical systems for in vitro modelling of neurodegenerative diseases, our first steps towards microneedle-based intradermal diagnostics and retinal prosthesis, and energy harvesting from cyanobacteria.
Short bio:
Prof. Stephan Sylvest Keller received his M.Sc. Degree in microengineering from the Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland, in 2005 and his Ph.D. in microtechnology from the Technical University of Denmark (DTU), Denmark, in 2008. Since 2015, he heads the Biomaterial Microsystems group at DTU Nanolab, the National Centre for Nano Fabrication and Characterization at the Technical University of Denmark. His current research focuses on novel strategies for fabrication of 3D micro- and nanostructures in carbon and polymers for smart cell scaffolds, biosensors, drug delivery devices, microsupercapacitors and microbial fuel cells. In 2017, he received the prestigious Consolidator Grant from the European Research Council (ERC) to expand his activities in 3D carbon micro- and nanofabrication for electrochemical energy harvesting and storage. He also coordinates the establishment of PolyFabLab, a facility for polymer micro- and nanofabrication enabling research in health tech and life science funded by the Novo Nordisk Foundation.
All welcome!