München 2019 – wissenschaftliches Programm
P 14.1: Hauptvortrag
Mittwoch, 20. März 2019, 11:00–11:30, HS 20
Plasmas and the tailoring of nanomaterials — •Uros Cvelbar — Jozef Stefan Institute
In the recent direction of research, plasmas are being more and more used for tailoring nanomaterials, and to advance their properties, for example, to make them more efficient in catalysis. The aim is either to find alternative routes for the fast, large-scale synthesis of unique nanomaterials and/or their conversion. Low-temperature plasmas have proven to be a great source for the surface manipulations or supplying building blocks for nanomaterials. Furthermore, the specific plasma-surface interactions are leading to synergistic effects, where very little is understood regarding basic processes taking place. To understand these processes at the atomic scale and mechanisms taking place, we implemented different low-pressure plasma treatments of nanoscale materials such as nanowires or nanoparticles. As results of interactions of various plasma species including electrons or neutral atoms, the intrinsic properties of nanomaterials change. These observations are supported by analytical methods in order to unravel what is occurring on nanomaterial surface or bulk. Through the changes in the crystalline structure of material or reorganisation of its surfaces, the functionality of materials in applications such as gas sensing, liquid purification or similar, are significantly changed.