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Publications associées (12)
Eliminating turbulent self-interaction through the parallel boundary condition in local gyrokinetic simulations
Stephan Brunner, Justin Richard Ball
In this work, we highlight an issue that may reduce the accuracy of many local nonlinear gyrokinetic simulations – turbulent self-interaction through the parallel boundary condition. Given a sufficiently long parallel correlation length, individual turbule ...
2020Numerical methods for deterministic and stochastic differential equations with multiple scales and high contrasts
Mathematical models involving multiple scales are essential for the description of physical systems. In particular, these models are important for the simulation of time-dependent phenomena, such as the heat flow, where the Laplacian contains mixed and ind ...
EPFL2020Temporal upscaling in micromagnetism via heterogeneous multiscale methods
We consider a multiscale strategy addressing the disparate scales in the Landau-Lifschitz equations in micromagnetism. At the microscopic scale, the dynamics of magnetic moments are driven by a high frequency field. On the macroscopic scale we are interest ...
ELSEVIER SCIENCE BV2019Hematite Photoanodes for Solar Water Splitting: A Detailed Spectroelectrochemical Analysis on the pH-Dependent Performance
Nestor Guijarro Carratala, Florian Le Formal, Yongpeng Liu, Florent Alexandre Boudoire
The effect of the electrolyte pH on the performance of metal oxide photoanodes for solar water oxidation has not been fully resolved, and contrasting views have been presented in recent reports. Herein, a comprehensive set of spectroelectrochemical techniq ...
AMER CHEMICAL SOC2019Breaking the FF3 Format Preserving Encryption
Serge Vaudenay, Fatma Betül Durak
The NIST standard FF3 scheme (also known as BPS scheme) is a tweakable block cipher based on a 8-round Feistel Network. We break it with a practical attack. Our attack exploits the bad domain separation in FF3 design. The attack works with chosen plaintext ...
2017Visualisation of magnetic domain structures and magnetisation processes in Goss-oriented, high permeability steels using neutron grating interferometry
Benedikt Karl-Josef Gerhard Betz
Industrial transformers cores are built from stacked sheets of an iron silicon alloy, called laminations. The magnetic domain structures of these highly anisotropic electrical steels with a sharp (110)[001]-texture, the so-called Gosstexture, determines th ...
EPFL2016Bipolar optical pulse coding for performance enhancement in BOTDA sensors
Luc Thévenaz, Marcelo Alfonso Soto Hernandez
A pump signal based on bipolar pulse coding and single-sideband suppressed-carried (SSB-SC) modulation is proposed for Brillouin optical time-domain analysis (BOTDA) sensors. Making a sequential use of the Brillouin gain and loss spectra, the technique is ...
Optical Society of America2013Structural and kinetic studies of induced fit in xylulose kinase from Escherichia coli
The primary metabolic route for D-xylose, the second most abundant sugar in nature, is via the pentose phosphate pathway after a two-step or three-step conversion to xylulose-5-phosphate. Xylulose kinase (XK; EC 2.7.1.17) phosphorylates D-xylulose, the las ...
Elsevier BV2007Crystal Structure of the PP2A Phosphatase Activator: Implications for Its PP2A-Specific PPIase Activity
PTPA, an essential and specific activator of protein phosphatase 2A (PP2A), functions as a peptidyl prolyl isomerase (PPIase). We present here the crystal structures of human PTPA and of the two yeast orthologs (Ypa1 and Ypa2), revealing an all α-helical p ...
2006Patterned and self-assembled ferroelectric nano-structures obtained by epitaxial growth and e-beam lithography
The continuous downscaling of microelectronic circuits combined with increasing interest in ferroelectric thin films for non-volatile random access memories (FeRAM) is drawing great attention to small ferroelectric thin film structures. There are various c ...
EPFL2004