Institut für Materialphysik

IMP-Seminar WiSe 17/18

Unless noted otherwise, the IMP seminar commences at 16:00 (sharp) in our seminar room (SR11, C.03.101). Prior to the seminar (~15:40) coffee, tea, and cookies are being served in the same room.

15.09.2017 Friday, 11:15, C.03.101
Rouzbeh Abadi Institute of structural mechanics, Bauhaus University, Weimar, Germany
The effect of temperature and topological defects on fracture strength of grain
boundaries in single-layer polycrystalline boron-nitride nanosheet

Kontakt: rvink @ ump.gwdg.de

19.10.2017
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to be announced
Kontakt: sekretariat @ uni-goettingen.de

26.10.2017 Thursday, 16:00, C03.101
Benito Carlos Aramayo Facultad deHumanidades y Ciencias Sociales de la
Universidad Nacional de Jujuy, Argentina
Lithium mining in the Province of Jujuy and the environment
Kontakt: jooss @ material.physik.uni-goettingen.de

02.11.2017um 17:00 im HS5 gemeinsame SFB 755 und SFB 1073 Veranstaltung
Prof.Gisela Schütz MPI für intelligente Systeme, Stuttgart
Scanning x-ray microscopy for chemical, magnetic, depth and temporal sensitivity
Kontakt: ckaspar @ ump.gwdg.de

09.11.2017 Thursday, 16:00, C03.101
Dr.Christine Borchers IMP Universität Göttingen
Nanocrystalline steels obtained by ball-milling of Fe and B, C, N, or
O: Similarities and discrepancies

Kontakt: cborche @ gwdg.de

16.11.2017 Thursday, 16:00, C03.101
Max Steinbrück Institut für Materialphysik, Georg-August-Universität Göttingen
Design and Test of an In-Situ SEM Heating Sample Holder
In-Situ experimentation lives up to its full potential if transitions and transformations in specimen characteristics can be observed and documented time resolved during the change process. To witness those changes, like formation of voids and hillocks during electromigration in metals, elevated temperatures are often required to provide the necessary activation energy. For that, a heating sample holder for the Nano-SEM has been developed and built. In this talk, the possibilities and problems of sample heating in the Nano-SEM are presented and discussed.

Kontakt: msteinbrueck @ ump.gwdg.de

23.11.2017 Thursday 10:15 - 13:00, C03.101
Dr.Sarah Hoffmann-Urlaub Institut für Materialphysik, Georg-August-Universität Göttingen
safety instruction / Sicherheitsbelehrungen
Kontakt: shoffmann@material.physik.uni-goettingen.de

30.11.2017
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to be announced
Kontakt: sekretariat @ ump.gwdg.de

07.12.2017
Felix Rieger Institut für Materialphysik, Georg-August-Universität Göttingen
HRTEM studies and thermal conductivity measurements of epitaxially grown Sb2Te3 films
Thermoelectric materials are a very interesting topic of actual research due to their capability of converting heat into electricity without any moving parts and without the need of huge temperature gradients. A very promising and already used material is Sb2Te3. For further understanding the structure property relations in this material and optimizing its thermoelectric properties, epitaxial thin films have been synthesized by PVD and studied in the FEI TITAN ETEM. Thermal conductivity measurements have been made using the 3omega method. Furthermore, the Kapitza resistance of various involved interfaces has been determined, allowing for high precision determination of the film thermal conductivity. The analysis shows that the nearly single crystalline films show a remarkably small cross plane (c-axis) thermal conductivity pointing to an intrinsic limitation by the layered structure.

Kontakt: Sekretariat @ ump.gwdg.de

12.12.2017 Dienstag 9:00 Uhr in C03.101
-- Institut für Materialphysik
Mitgliederversammlung / Sicherheitsbelehrung
Kontakt: sekretariat @ ump.gwdg.de

14.12.2017
Prof.Dr. Franz Faupel Chair for Multicomponent Materials, Faculty of Engineering, Kiel University
Functional Nanocomposites - From Fabrication to Function
Abstract Prof.Faupel als PDF
Kontakt: joss @ ump.gwdg.de

21.12.2017
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to be announced
Kontakt: sekretariat @ ump.gwdg.de

11.01.2018
Dr.Christine Borchers IMP Universität Göttingen
Nanocrystalline steels obtained by ball-milling of Fe and B, C, N, or
O: Similarities and discrepancies

Kontakt: cborche @ gwdg.de

18.01.2018 ..
Dr. Christoph Gammer, Erich Schmid Institute of Materials Science, Leoben, Austria
Local strain mapping during in situ deformation in the TEM
In situ TEM has provided great insight into the deformation mechanisms in various material systems. Advanced deformation holders in combination with well-defined sample geometries have enabled to obtain the stress-strain curve, but the local transient strain field during deformation remains unknown. In the present work we demonstrate local strain mapping during continuous in situ deformation in a TEM at the nanometer scale. This is achieved by scanning an electron beam over the sample and recording a full diffraction pattern for every probe position using a fast electron detector. The method is demonstrated for two different material systems, one being amorphous and the other one crystalline. In the first study, a CuZr-based metallic glass sample is deformed under tension. The ellipticity of the amorphous ring pattern can be used to map the local strain. In the second study an in situ tensile test of Al is shown. Here, cross correlation is used to detect the positions of the diffracted peaks, allowing to obtain time-resolved strain maps [1]. The strain maps demonstrate a large spread in local stresses associated with defects. 1. C. Gammer et al., Appl. Phys. Lett. 109 (2016) 081906.
Kontakt: ltian @ ump.gwdg.de

25.01.2018
Herr Prof. Dr. Ralf Busch, Chair of Metallic Materials, Department of Materials Science and Engineering, Saarland University, Campus C63, 66123 Saarbrücken, Germany
KINETICS, THERMODYNAMICS AND STRUCTURE OF BULK METALLIC GLASS FORMING LIQUIDS
Abstract Prof.Busch als PDF
Kontakt: sekretariat @ ump.gwdg.de

01.02.2018
Moritz Roscher Institut für Materialphysik, Georg-August-Universität Göttingen
Herstellung und Charakterisierung von dünnen Eisen-Kohlenstoff Schichten für Elektromigrationsexperimente
Kontakt: mroscher @ ump.gwdg.de

08.02.2018
Phillip Klose (AG Pundt) Institut für Materialphysik, Georg-August-Universität Göttingen
Präsentation Masterarbeit
Kontakt: sekretariat @ ump.gwdg.de

IMP-Seminar SoSe 2017

11.05.2017
Prof. Karl-Michael Weitzel, Philipps - Universität Marburg
Ionentransport in Festkörpern und dünnen Schichten - Elektrodiffusion, chemische Diffusion und Korngrenzendiffusion
Kontakt: jooss @ ump.gwdg.de

18.05.2017
Prof. Dr. Astrid de Wijn, Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology NTNU, Trondheim Norwegen
Nanoscopic friction under electrochemical control
Kontakt: rvink @ ump.gwdg.de

22.05.2017 (Montag um 14:30 Uhr im Seminarraum SR11 C03.101)
Emanuel Franke, Universität Göttingen, Institut für Materialphysik
Save the DSC" -> Short presentation of DSC capabilities
Kontakt: volkert @ ump.gwdg.de

25.05.2017
Himmelfahrt

01.06.2017
Prof. M. Zehetbauer, University of Vienna, Group Physics of Nanostructured Materials
H2 Speicherung in SPD prozessierten Nanomaterialien
Kontakt: chris @ ump.gwdg.de

02.06.2017 (Freitag um 10:00 Uhr im Seminarraum SR11 C03.101)
Dr. D. Setman, University of Vienna, Group Physics of Nanostructured Materials
Leerstellen- bzw. Fehlstellenhärtung mit H2 als Fehlstellen Trap
Kontakt: chris @ ump.gwdg.de

07.06.2017
Mona Maaß, Universität Göttingen, Institut für Materialphysik
In-situ SEM / TEM fracture tests on (modified) tracheids of pine latewood
Kontakt: volkert @ ump.gwdg.de

15.06.2017
To be announced

22.06.2017
Magnus Hamm, Universität Göttingen, Institut für Materialphysik
Influence of grain boundaries on hydrogen diffusion in Magnesium
Kontakt: apundt @ ump.gwdg.de

29.06.2017
Prof. Candace Chan, Materials Science & Engineering, Arizona State University, USA
Engineering Nanostructured Metal Oxides for Photocatalytic Applications
Kontakt: volkert @ ump.gwdg.de
Kontakt: mrisch @ ump.gwdg.de

06.07.2017
Sarah Hoffmann-Urlaub, Universität Göttingen, Institut für Materialphysik
Physics of PLD
Kontakt: shoffmann @ ump.gwdg.de

13.07.2017
To be announced