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82 papers · 1 filter
Self-diffusion in two-dimensional quasi-magnetized rotating dusty plasmas
Peter Hartmann, Jorge C. Reyes, Evdokiya G. Kostadinova +10
The self-diffusion phenomenon in a two-dimensional dusty plasma at extremely strong (effective) magnetic fields is studied experimentally and by means of molecular dynamics simulat…
Equivalence of Open-Loop and Closed-Loop Operation of SAW Resonators and Delay Lines
Phillip Durdaut, Michael Höft, Jean-Michel Friedt +1
Surface acoustic wave (SAW) sensors in the form of two-port resonators or delay lines are widely used in various fields of application. Readout of such sensors is achieved by elect…
An Analysis by Synthesis Approach for Automatic Vertebral Shape Identification in Clinical QCT
Stefan Reinhold. Timo Damm, Lukas Huber, Reimer Andresen +3
Quantitative computed tomography (QCT) is a widely used tool for osteoporosis diagnosis and monitoring. The assessment of cortical markers like cortical bone mineral density (BMD)…
Spectral multipliers and wave equation for sub-Laplacians: lower regularity bounds of Euclidean type
Alessio Martini, Detlef Müller, Sebastiano Nicolussi Golo
Let be a smooth second-order real differential operator in divergence form on a manifold of dimension . Under a bracket-generating condition, we show that the rang…
Skyrmion lifetimes in ultrathin films
Stephan von Malottki, Pavel F. Bessarab, Soumyajyoti Haldar +2
We show that thermal stability of magnetic skyrmions can be strongly affected by entropic effects. The lifetimes of isolated skyrmions in atomic Pd/Fe bilayers on Ir(111) and on Rh…
Multi-wavelength observations of the EUV variable metal-rich white dwarf GD 394
David J. Wilson, Boris T. Gaensicke, Detlev Koester +13
We present new Hubble Space Telescope (HST) ultraviolet and ground-based optical observations of the hot, metal-rich white dwarf GD 394. Extreme-ultraviolet (EUV) observations in 1…