Stephan Sylvest Keller

Stephan Sylvest Keller is a Professor in the Department of Micro- and Nanotechnology at the Technical University of Denmark (DTU), affiliated with the National Centre for Nano Fabrication and Characterization and DTU Nanolab. His research lies at the intersection of materials science, microfabrication, and biomedical engineering, focusing on the development of 3D pyrolytic carbon microsystems for biosensing, neural interfaces, and bioenergy applications.

His research interests include biomaterial microsystems, nanofabrication, microelectrode design, bioelectrochemical systems, and drug delivery platforms. He leverages advanced fabrication techniques such as additive manufacturing and lithography to create functional 3D carbon structures for applications in brain-on-a-chip, microsupercapacitors, and microbial energy harvesting.

The recent articles highlight a strong trend in developing 3D pyrolytic carbon electrodes for electrochemical applications, spanning neuroscience, environmental remediation, and sustainable energy. Keywords across these works include bioelectrochemistry, microfabrication, and functional materials, with subfields ranging from retinal implants to microbial fuel cells and on-chip energy storage.

He actively supervises multiple PhD students and leads cutting-edge projects such as INSECTS (Interdigitated Solar Electrochemical Capacitors) and MIRACLE (Microbial syntRophic metAbolism of CO2 on 3D carbon microeLectrodes for biohExanol production). His work contributes to UN Sustainable Development Goals related to clean energy and good health.

His laboratory, embedded within DTU Nanolab, specializes in cleanroom-based micro- and nano-fabrication, focusing on translating engineered microsystems into biomedical and environmental applications. The team collaborates widely across disciplines, including microbiology, electrochemistry, and clinical neuroscience.