Fraunhofer Institute for Photonic Microsystems

Correlative high-speed synchrotron X-ray and inline coherent imaging of high-power laser welding

Abstract High-power laser welding is central to electric vehicle (EV) manufacturing, yet keyhole instability and associated defects remain difficult to control due to highly transient process dynamics. Here, we combine inline coherent imaging (ICI) and high-speed synchrotron X-ra...

Structural, mechanical, and electrical properties of magnetron-sputtered HfO2/SiO2 stacks

We systematically investigate the influence of sputtering pressure and film thickness on the structural, mechanical, optical, and electrical properties of magnetron-sputtered HfO2 layers for ion-sensitive field-effect transistor applications. Unlike extensively studied atomic lay...