As part of their one-month stay at the Measurement and Sensor Technology (MuSt) group at TU Darmstadt, Carol Derla and Heime Jonkers, PhD students in the NIFTy (Nature Inspired Fabrication and Transduction) group of Prof. Gijs Krijnen at the University of Twente, gave a guest lecture on July 18, 2025. The event was attended by students from the Measurement Technology course as well as members of the LokoAssist research training group.

In his talk titled “Advancements in 3D Printing Ferro-Electret Sensors”, Carol Derla presented multi-material 3D printing techniques for fabricating ferroelectret-based sensors and actuators. His research focuses on improving adhesion between materials such as polypropylene (PP) and conductive thermoplastic polyurethane (cTPU) using surface treatments and mechanical interlocking. These advancements aim to support the development of customizable, biocompatible diagnostic devices.

Heime Jonkers' talk, “In-situ Monitoring and Modelling of FFF 3D Printing with Electrically Conductive Filaments”, addressed quality control in fused filament fabrication (FFF). By using conductive filaments to measure layer adhesion during printing, his research provides a new approach to inline monitoring. He also discussed modelling techniques that help interpret the impedance data gathered during printing.

The MuSt group thanks both guest researchers for their valuable contributions and the inspiring exchange of ideas—and wishes them all the best in their future endeavors.