Thin conducting polymer films in action

February 4, 2020
Authors: Prof. Francesco Greco, Institute of Solid State Physics Graz University of Technology, Austria

Thin conducting polymer films in action: conductivity, conformability, wrinkling, stretchability, stimuli-responsiveness, body-interfacing

In the study of thin films of functional materials, attention is usually focusing on the thin film only, either for the basic understanding of materials structure and properties or for their application -e.g. in devices. The substrate is often seen just as a rigid, passive, macroscopic support, with little or no interest.
What happens if the substrate is a thin film too? What if the substrate is a soft material? What if the substrate (or the thin film) is able to change its shape or its mechanical properties in response to an external stimulus? What if no substrate at all? In this talk some cases taken from my past and current researches are presented. Investigation of thin and ultrathin films of functional conductive materials, either polymer or composites, has been the focus of my research so far, with a special attention to the interplay of conductive and mechanical properties of soft materials. The overview will include examples of free-standing conjugated polymer nanosheets, elastomer/conjugated polymer composites with humidity- or temperature-triggered shape change, ultrathin and conformable organic electronics based on temporary tattoos, including applications in epidermal monitoring systems.Some highlights of ongoing work at my lab (LAMPSe - Laboratory of Applied Materials for Printed and Soft Electronics) and future perspectives regarding printed and soft, stretchable conductors will be provided.

Referent: Paolo Milani

Poster: seminario_greco_2150