Shape Memory Thin Films

Abstract

Shape memory thin film technology has received significant interest due to its ability to generate special material properties while offering the potential for cost-effective batch fabrication. Additionally, the fabrication of micro-patterned films using techniques such as magnetron sputtering, UV lithography, and wet etching holds great promise in overcoming limitations associated with conventional device manufacturing processes. The speaker will focus on the applications of shape memory thin films in various fields, including minimally invasive medicine, stretchable electronics, and elastocaloric cooling. These materials have to exhibit reversible and repetitive behavior, which is particularly crucial for high-cycle applications such as elastocaloric cooling that require millions of transformation cycles. In recent years, researchers have achieved unprecedented functional and structural fatigue resistance in shape memory alloys by combining conditions of supercompatibility between phases with suitable grain size and a favorable array of fine precipitates. These advancements have also led to reduced hysteresis in the alloys. The talk will delve into the relative roles of these factors, particularly in stress-induced phase transformations, which present more demanding challenges.

About the speaker

Prof. Eckhard QUANDT is the Vice President for Research, Transfer and Scientific infrastructure of Kiel University, Germany and Professor for Inorganic Functional Materials at the Faculty of Engineering of the University. His research interests are material research on smart materials and multiferroics and the use of these materials for the development of sensors and actuators. He is a member of the National Academy of Science and Engineering (acatech, since 2012) and received Petersen Innovations-Transfer-Preis 2018 (with Rodrigo Lima de Miranda) in 2018. He was also a Speaker of the DFG Collaborative Research Centre SFB 1261 “Magnetoelectric Sensors: From Composite Materials to Biomagnetic Diagostics” during 2016 – 2021.

For Attendees' Attention

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