Browsing Fakultät für Physik (inkl. GAUSS) by Advisor "Volkert, Cynthia Prof."
Now showing items 1-11 of 11
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Elektronenmikroskopische Untersuchung des Einflusses elektrischer Felder auf das Sinterverhalten von Oxidkeramiken
(2023-11-09)Despite the wide application potential of flash sintering for processing ceramic materials, the physical origins of the effect remain unclear. Therefore, the primary objective of this work is to gain a deeper understanding ... -
In-situ Bruchversuche an amorph/kristallinen Multilagen im Transmissionselektronenmikroskop
(2015-11-26)In this thesis, in-situ fracture tests on amorphous/crystalline multilayers with layer thicknesses of less than 100 nm have been performed inside a transmission electron microscope. In this experiments, the layer thickness ... -
In-situ Zugversuche an einkristallinen Gold-Nanodrähten im TEM
(2012-11-29)The investigation of size dependent mechanical properties of different materials was of great interest for physicists over the past decades. Whereas the deformation of bulk materials is nearly completely understood and the ... -
Mechanische Eigenschaften kristallin-amorpher Schichtpakete
(2013-01-11)Micromechanical characterization by Berkovich nanoindentation and uniaxial microcompression tests has been performed on multilayered films consisting of three different material combinations - Ti/ZrO2, Cu/PdSi und Cu/PC – ... -
Mechanische Eigenschaften von Lithiumionen Batterieelektrodenmaterialien bei verschiedenen Ladezuständen
(2015-08-14)Due to significant volume changes of lithium ion battery electrode materials under operation, it is essential to understand the mechanical behavior of these materials. On the one hand there still are open questions about ... -
Mechanismen und Größeneffekte von Ermüdungsschädigungen in dünnen Kupfer filmen bei sehr hohen Zyklenzahlen
(2013-05-17)Thin metal films show completely different fatigue behavior than bulk metals. The films have longer fatigue lives and instead of extrusions and complex dislocation structures, they form interface cracks and isolated ... -
Nanotribologische Untersuchungen an Dünnschicht-Manganaten: Phononische Beiträge zur Reibung auf der Nanometerskala
(2018-01-31)Even though friction is often described by straight-forward empirical laws, its fundamental cause is by no means simple. Many of the fundamental excitations at the nanoscale contact are strongly coupled making it challenging ... -
Structure Investigations of LiMn2O4 as Oxygen Evolution Reaction Catalyst
(2023-09-15)The catalytic activity of a material is determined by the electronic structure and atomic arrangements at its surface. In particular, eg occupancy of octahedral cations has been found to be a successful descriptor of the ... -
TEM in-situ Untersuchungen an Ti-Ni basierten Formgedächtnislegierungen
(2018-05-03)Shape memory alloys (SMAs) are named after their ability to recover plastic deformation upon heating and return to their original undeformed shape. The key mechanism responsible for this behavior is a reversible diffusionless ... -
Untersuchung der Versetzungsnukleation in Gold-Nanodrähten durch in-situ Elektronenmikroskopie
(2016-05-25)The mechanical properties of a material play a decisive role for possible applications. Nanoscale metals have long been known to show different mechanical properties than their bulk counterpart. In bulk metals the deformation ... -
Untersuchungen der Wärmekapazität von Nanopartikeln und Multilagen mit der nanokalorimetrischen Methode
(2018-07-23)The heat capacity of samples with characteristic sizes in the nanometer range can differ strongly from the bulk heat capacity. For small samples, surface phonons and mechanical strain have an important effect on the phonon ...