Results 81 to 90 of about 2,720 (178)

X‐Ray Computed Tomography Quantifies Primary Phases and Reveals Crack Morphology in High‐Cycle Fatigue of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, Volume 27, Issue 24, December 2025.
Primary phases and a fatigue crack are studied in a forged blank of an aluminum alloy using synchrotron and laboratory X‐ray computed tomography. To image the crack, the fatigue test is interrupted, and a static tensile load is applied to open the crack.
Jakob Schröder, Ying Han, Tobias Fritsch, Bardia Hejazi, Alexander Ulbricht, Birgit Skrotzki, Giovanni Bruno   +6 more
wiley   +1 more source

2D velocity fields of simulated interacting disc galaxies [PDF]

, 2007
We investigate distortions in the velocity fields of disc galaxies and their use to reveal the dynam- ical state of interacting galaxies at different redshift. For that purpose, we model disc galaxies in combined N-body/hydrodynamic simulations.
T. Kronberger, W. Kapferer, S. Schindler, B. L. Z. I. F. A. U. Teilchenphysik, Universitaet Innsbruck, M Austria, I. F. Astrophysik, U. Goettingen, Germany., Argelander Institut fur Astronomie, U. Bonn   +10 more
semanticscholar   +1 more source

Substructures induced by dust drag in protoplanetary disks

Astronomy & Astrophysics
Dust substructures observed in protoplanetary disks are commonly attributed to embedded planets; however, intrinsic gas-dust interactions can also generate complex morphologies.
Bi Jiaqing, Flock Mario, Ostertag Dominik, Lüttkemöller Neele, Wolf Sebastian   +4 more
doaj   +1 more source

Nonlinear Transmission of Strong THz‐Electric Fields Through Thin Gold Films

Advanced Optical Materials, Volume 13, Issue 35, December 12, 2025.
Gold is is the prime metal for imaging THz radiation. This study demonstrates that the interaction of strong THz pulses with gold becomes nonlinear at certain peak THz‐electric field strengths. The strong fields change the electron density of states which contributing to the absorption of the propagating THz pulse.
Rokas Jutas, Jonas Grumm, Yannic U. Staechelin, Audrius Pugžlys, Andrius Baltuška, Andreas Knorr, Holger Lange   +6 more
wiley   +1 more source

The interstellar medium of the Antennae galaxies [PDF]

, 2007
To study the properties of the interstellar medium in the prototypical merging system of the Antennae galaxies (NGC 4038 and NGC 4039), we have obtained 12 CO (1–0), (2–1) and (3–2) line maps, as well as a map of the 870  μ m continuum emission.
A. Schulz, C. Henkel, D. Muders, R. Mao, M. Roellig, R. M. I. F. P. U. I. Didaktik, University of Koeln, M. F. Radioastronomie, Bonn, Argelander Institut fur Astronomie, U. Bonn, Purple Mountain Observatory, Nanjing, I. Institut, Instituto de Radioastronomia Milimetrica, Granada   +15 more
semanticscholar   +1 more source

N‐Heterocyclische Carbene auf einem III‐V‐Halbleiter: Von Kettenbildung zu geordneten Monolagen

Angewandte Chemie, Volume 137, Issue 46, November 10, 2025.
Die Funktionalisierung von GaAs, einem III‐V‐Halbleiter, mit N‐heterocyclischen Carbenen wird in einem multidisziplinären experimentellen und theoretischen Ansatz demonstriert. Es werden geordnete Monolagen erreicht, die aus Ketten von Molekülen bestehen, welche kovalent an die Oberfläche gebunden sind und die Oberflächeneigenschaften stark verändern ...
Martin Franz, Ankita Das, Sandhya Chandola, Milan Kubicki, Mowpriya Das, Andrea Sette, Domenico Corona, Maurizia Palummo, Letizia Chiodo, René Schöder, Preeti Chahar, Benjamin Fuhrmann, Jonathan Engelhardt, Oskar Düren, Dorothee S. Rosenzweig, Paul Bakos, Kai‐Luis Jakob, Mario Dähne, Conor Hogan, Norbert Esser, Frank Glorius   +20 more
wiley   +1 more source

Ultrafast lattice response of photoexcited thin films studied by X-ray diffraction

Structural Dynamics, 2014
Using ultrafast X-ray diffraction, we study the coherent picosecond lattice dynamics of photoexcited thin films in the two limiting cases, where the photoinduced stress profile decays on a length scale larger and smaller than the film thickness. We solve
Daniel Schick, Marc Herzog, André Bojahr, Wolfram Leitenberger, Andreas Hertwig, Roman Shayduk, Matias Bargheer   +6 more
doaj   +1 more source

VLT/UVES observations of peculiar alpha abundances in a sub-DLA at z ~ 1.8 towards the quasar B1101-26 [PDF]

, 2014
We present a detailed analysis of chemical abundances in a sub-damped Lyman alpha absorber at z=1.839 towards the quasar B1101-26, based on a very-high-resolution (R ~ 75,000) and high-signal-to-noise (S/N >100) spectrum observed with the UV Visual ...
A. Fox, P. Richter, Cora Fechner Institut fur Physik und Astronomie, Potsdam, Germany.   +4 more
semanticscholar   +1 more source

Entropy production in non-reciprocal polar active mixtures

New Journal of Physics
The out-of-equilibrium character of active systems is often twofold, arising from both the activity itself and from non-reciprocal couplings between constituents.
Kim L Kreienkamp, Sabine H L Klapp
doaj   +1 more source

Constraining the Natural MSSM through tunneling to color-breaking vacua at zero and non-zero temperature

Physics Letters B, 2014
We re-evaluate the constraints on the parameter space of the minimal supersymmetric standard model from tunneling to charge- and/or color-breaking minima, taking into account thermal corrections.
J.E. Camargo-Molina, B. Garbrecht, B. O'Leary, W. Porod, F. Staub   +4 more
doaj   +1 more source