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Instructors: Dr. Ben Breitung; Prof. Dr.-Ing. Horst Hahn
Event type:
Lecture
Org-unit: Dept. 11 - Institute of Materials Science
Displayed in timetable as:
Tunable properties
Subject:
Crediting for:
Hours per week:
2
Language of instruction:
Englisch
Min. | Max. participants:
- | -
Course Contents:
The conventional control of material properties is achieved by compositional (e.g. alloying) or microstructural modifications, such as variation of grain size, introduction of point (e.g. vacancies, dopant atoms), line (dislocations, twins) or planar (stacking faults) defects etc. These modifications establish relationships between microstructure and material properties.
Going beyond these well-known concepts, the present course will introduce the idea and physics behind the reversible control of material properties. Among others, the electric potential as control parameter will be discussed in detail; especially dielectric and electrolytic gating concepts in printed electronics will be covered. Besides the electric potential, reversible chemical surface and bulk reactions can control the properties of a material in a reversible manner. In this context case studies of reversible and irreversible modifications of magnetic and electrical properties will be presented and connected to state of the art research results (e.g. nanostructured materials for energy storage, novel high entropy alloy materials).
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