Seminare, Kolloquien & Sitzungen

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Bitte beachten Sie: Die Termine auf dieser Seite erscheinen momentan in umgekehrt chronologischer Reihenfolge.

21.07.2017

D-PHYS - Promotionsfeier / Doctorate awards ceremony


- ETH Zürich, Hönggerberg HPH G 1 - Fri 21.07.2017 17:00

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16.06.2017

D-PHYS - Masterfeier / Graduation ceremony


- ETH Zürich, Zentrum HG F 30 - Fri 16.06.2017 17:00-19:00

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05.06.2017

D-PHYS - Pfingstmontag / Whit Monday


- ETH Zürich, Hönggerberg - Mon 5.06.2017 8:00-18:00

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02.06.2017

D-PHYS - Ende Frühjahrssemester 2017 / End of Spring Semester 2017


- ETH Zürich, Hönggerberg - Fri 2.06.2017 18:00

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02.06.2017

D-PHYS (members only) - Departements- und Professorenkonferenz


- ETH Zürich, Hönggerberg HPH G 1 - Fri 2.06.2017 14:00-18:00

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02.06.2017

D-PHYS (members only) - PK-Lunch


- ETH Zürich, Hönggerberg HIT E 51 - Fri 2.06.2017 12:00-13:30

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29.05.2017

Oded Zilberberg (ETH Zürich) - Electronic and Photonic quantum engineered systems


- ETH Zürich, Zentrum HG F 30 - Mon 29.05.2017 17:15

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25.05.2017

D-PHYS - Auffahrt / Ascension Day


- ETH Zürich, Hönggerberg - Thu 25.05.2017 8:00-18:00

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22.05.2017

D-PHYS (members only) - Ausschuss


- ETH Zürich, Hönggerberg HIT E 41.1 - Mon 22.05.2017 13:00-18:00

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17.05.2017

Colin A. Norman (Dept. of Physics & Astronomy, John Hopkins University, Baltimore, USA) - The Formation, Evolution and Environments of Active Galaxies

Active galaxies host billion solar masses central black holes, whose impact on galaxies and structure on super-galactic scales is still unknown. I will discuss formation and evolution of low- and high-redshift active galaxies with emphasis on environments where feedback effects become important. In the light of new simulations and data, I will also examine the relation between starbursts and activity in galaxies and the underlying physics of multi-phase media in these extreme conditions.
- ETH Zürich, Hönggerberg HPV G 4 - Wed 17.05.2017 16:15

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16.05.2017

D-PHYS (members only) - Unterrichtskommission


- ETH Zürich, Zentrum - Tue 16.05.2017 15:15

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16.05.2017

D-PHYS (members only) - Betriebskommission der Betriebe D-PHYS


- ETH Zürich, Hönggerberg HPF G 6 - Tue 16.05.2017 9:00-11:00

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10.05.2017

Federico Capasso (School of Eng. & Applied Sciences, Harvard University, Cambridge, USA) - Metaoptics

Metasurfaces based on sub-wavelength patterning have major potential for arbitrary control of the wavefront of light by achieving local control of the phase, amplitude and polarization and allowing greater functionality and more compact devices. High performance metalenses for the visible, achromatic lenses, axicons, vortex plates, holograms, ultracompact spectrometers and polarimeters will be discussed along with the potential of this technology for a wide range of applications.
- ETH Zürich, Hönggerberg HPV G 4 - Wed 10.05.2017 16:15

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10.05.2017

Rafal E. Dunin-Borkowski (Research Centre, Juelich, Germany) - Electromagnetic field mapping at the nanoscale in the transmission electron microscope


- UZH Irchel Y36 J 33 - Wed 10.05.2017 11:15

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09.05.2017

Stefan Dittmaier (University of Freiburg, Germany) - NLO EW corrections to pp -> WW/ZZ -> 4leptons


- ETH Zürich, Hönggerberg HIT E 41.1 - Tue 9.05.2017 11:15

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04.05.2017

Andreas Schilling (Universität Zürich) - „Triplonen“ in magnetischen Isolatoren

Das Konzept von Quasiteilchen in Festkörpern hat sich in der Physik mit grossem Erfolg fest etabliert. In vielen Fällen lässt sich das Verhalten in Bezug auf mechanische, elektronische oder magnetische Anre-gungen in Analogie zu einem „Gas“ von Quasiteilchen erklären, die einer festen Energie-Impuls Bezie-hung gehorchen und den Beziehungen der statistischen Mechanik unterliegen. Phononen als quantisierte Gitterschwingungen sind ein berühmtes Beispiel dafür. Ich stelle ein wenig bekanntes System von magnetischen Isolatoren vor, bei dem man annimmt dass entsprechende magnetische Spin-1 Quasiteil-chen (sog. „Triplonen“) im Grundzustand eine Bose-Einstein-Kondensation zeigen. Einige Eigenschaften des Festkörpers zeigen in der Tat verblüffende Analogien zu denen eines Bose-Einstein-Kondensats, andere – wie zum Beispiel Superfluidität – sind dagegen nie nachgewiesen worden.
- ETH Zürich, Zentrum HG G 5 - Thu 4.05.2017 19:30-20:00

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04.05.2017

A. David (CERN, Geneva) - Higgs couplings fit


- PSI Area West WHGA 001 - Thu 4.05.2017 16:00

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03.05.2017

Claude Duhr (CERN, Geneva & Université catholique, Louvain, Belgium) - From Pure Mathematics to Precision Physics: Modern Approaches to Scattering Amplitudes

The computation of quantum corrections to scattering processes has for a long time been hampered by the complexity of the integrals involved. In recent years there was tremendous progress in this area, partly due to the discovery of deep connections between scattering amplitudes and certain branches of pure mathematics. I will review these connections and discuss how they can be turned into new powerful tools for precision computations.
- ETH Zürich, Hönggerberg HPV G 4 - Wed 3.05.2017 16:15

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03.05.2017

Maxi Castrillejo (University of Alabama at Birmingham, USA) - First results of 236U and 129I in the North Atlantic Ocean (GEOVIDE 2014 expedition)


- ETH Zürich, Hönggerberg HPK D 24 - Wed 3.05.2017 11:00

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01.05.2017

D-PHYS - Tag der Arbeit / Labour Day


- ETH Zürich, Hönggerberg - Mon 1.05.2017 8:00-18:00

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27.04.2017

George Jackeli (MPI, Stuttgart, Germany) - Spin-orbital frustration in Mott insulators

In Mott insulators, unquenched orbital degrees of freedom often frustrate the magnetic interactions and lead to a plethora of interesting phases with unusual spin patterns or non-magnetic states without long-range order. I will review from this perspective the theoretical concepts and experimental data on late transition metal compounds, mostly focusing on iridates. In the second part, I will present our recent theoretical study of interplay of spin and orbital degrees in double-perovskite compounds with spin one-half ions occupying the frustrated fcc sublattice, such as molybdenum and osmium oxides. I will argue that this interplay might lead to a rich variety of the phases that include non-collinear ordered patterns with or without net moment, and, most remarkably, non-magnetic disordered spin-orbit dimer state.
- ETH Zürich, Hönggerberg HPF G 6 - Thu 27.04.2017 16:45-18:00

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27.04.2017

Marco Hutter (IRIS, ETH Zurich) - Legged robots – the future of all-terrain mobility

Legged robotics is the future when it comes to versatile machines that can move across any terrain. In contrast to classical wheeled or tracked vehicles, they have the potential to move with unperceived agility and grace. In this talk, I will give an insight into our work on legged robots that are used in the field for autonomous inspection and exploration. This includes novel compliant actuators that enable dynamic interaction, model based control algorithms to balance the machine in dynamic gaits, and optimization tools to learn motion trajectory and feedback control parameters. Moreover, I will show how these machines can perceive their environment to localize themselves and to create accurate maps of the surrounding. An overview about our work and the newest robot ANYmal is available on www.rsl.ethz.ch and on our youtube channel: www.youtube.com/leggedrobotics
- ETH Zürich, Zentrum HG E 5 - Thu 27.04.2017 16:15

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27.04.2017

A. Di Piazza (Max-Planck-Institut, Heidelberg, Germany) - QED with strong laser fields


- PSI Area Ost OSGA EG 06 - Thu 27.04.2017 16:00

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26.04.2017

Sebastiano Cantalupo (ETH Zurich) - Illuminating the Dark Universe with the help of supermassive black holes


- ETH Zürich, Zentrum HG F 30 - Wed 26.04.2017 17:15

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26.04.2017

Hjalmar Rosengren (Chalmers University, Gothenburg, Sweden) - Combinatorics of elliptic lattice models


- ETH Zürich, Hönggerberg HIT E 41.1 - Wed 26.04.2017 14:00

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26.04.2017

David Starr (Helmholtz-Institut, Berlin, Germany) - Soft and hard X-ray ambient pressure photoelectron spectroscopy of semiconductor/electrolyte interfaces for water splitting applications

Due to their potential long term stability in aqueous solutions, ease of synthesis, and low cost of production, semiconducting metal oxide materials have recently garnered much attention for use as photoelectrodes for photoelectrochemical water splitting. Most studies have focused on binary semiconducting oxide materials. However, currently no binary oxide material has met all the criteria listed above. This has driven researchers to expand the materials database and investigate more complex multinary oxides. Among multinary oxide materials, bismuth vanadate, BiVO4, is currently viewed as one of the most promising for water splitting. The monoclinic scheelite phase of BiVO4 has a band-gap of 2.4 eV and recent reports of >5 % solar to hydrogen conversion efficiency under AM 1.5 illumination makes it the most successful multinary oxide photoanode to date. We have used ambient pressure X-ray photoelectron spectroscopy to gain a molecular-level understanding of the BiVO4/aqueous electrolyte interface. With soft X-rays (AP-XPS) water adsorption from the gas phase at pressures up to a few Torr can be studied providing information about the early stages of solid/electrolyte interface formation. The tender X-ray form (AP-HAXPES) can be used to directly interrogate a solid surface under an electrolyte film that is tens of nanometers thick. Our AP-XPS measurements on BiVO4(010) single crystal surfaces indicate that the surface is significantly hydroxylated by ~0.5 Torr. Surface hydroxylation is accompanied by reduced vanadium in the surface which leads to occupied states above the valence band maximum. We have also investigated the open-circuit behaviour of the thin-film BiVO4/bulk-like potassium phosphate electrolyte interface when illuminated with a solar-simulator. Upon illumination we observe changes in the BiVO4 consistent with the production of a small amount of H+ and significant restructuring of the electrolyte near the interface. These results provide fundamental information about the general behaviour of water splitting photoelectrodes under illumination.
- UZH Irchel Y36 J 33 - Wed 26.04.2017 11:15

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26.04.2017

Muhammed Usman (ETH Zurich) - Regional-scale Holocene cycling of terrestrial organic matter


- ETH Zürich, Hönggerberg HPK D 24 - Wed 26.04.2017 11:00

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25.04.2017

Andrea Ferrara (SNS, Pisa, Italy) - The Interstellar Medium of High Redshift Galaxies


- ETH Zürich, Hönggerberg HIT H 42 - Tue 25.04.2017 16:15

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25.04.2017

Jean-Michel Coron (ETH-ITS and Pierre-and-Marie-Curie University, Paris, France) - Some methods to use the nonlinearities in order to control a system

A control system is a dynamical system on which one can act thanks to what is called the control. For example, in a car, one can turn the steering wheel, press the accelerator pedal etc. These are the control(s). One of the main problems in control theory is the controllability problem. It is the following one. One starts from a given situation and there is a given target. The controllability problem is to see if, by using some suitable controls depending on time, one can move from the given situation to the prescribed target. We study this problem with a special emphasis on the case where the nonlinearities play a crucial role. We first recall some classical results on this problem for finite dimensional control systems. We explain why the main tool used for this problem in finite dimension, namely the iterated Lie brackets, is difficult to use for many important control systems modeled by partial differential equations. We present methods to avoid the use of iterated Lie brackets. We give applications of these methods to various physical control systems (Euler and Navier-Stokes equations of incompressible fluids, 1-D hyperbolic systems, heat equations, shallow water equations, Korteweg-de Vries equations, Schroedinger equations…).
- ETH Zürich, Zentrum CLV B 4 - Tue 25.04.2017 13:30

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Feed-Quelle: D-PHYS

 
 
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25.04.2017
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