Buscador de Tesis y publicaciones académicas

4D time-lapse micro-CT study on enhanced weathering of olivine using synchrotron radiation

Chandra Widyananda WINARDHI · Benoît CORDONNIER

Olivine dissolution has drawn significant attention, especially for enhanced silicate weathering to reduce atmospheric carbon dioxide. However, several questions persist on olivine interaction with seawater, such as the effects of composition and secondary minerals on dissolution also impurities or inclusions which cou...

Electrooxidation of Pt(110) and its influence on Pt surface restructuring

Dechun SI · Finn SCHRÖTER · Pol SALLÉS PERRAMON (ORCID: 0000-0003-1426-611X) · Jan Ole FEHRS

Pt electrocatalysts are widely used as cathode material in polymer-exchange membrane fuel cells (PEMFC) as they combine high ORR activity with sufficient stability. However, their long-term stability is still limited because of irreversible changes in the Pt surface morphology caused by electrochemical oxidation/reduct...

In situ GIXRD of organic thin films during tensile deformation for applications in stretchable electronics

Oier BIKONDOA · Jakob KJELSTRUP-HANSEN · Katarzyna JANIK · Cecilie FYNBO

We seek to investigate, simultaneously: (a) the microstructural changes that occur when an organic semiconductor (OSC) thin film device is mechanically stretched; (b) the changes in the electrical performance of the device This experiment aims to understand how the structural changes correlate with changing device perf...

Efficient policy adaptation for voltage control under unknown topology changes

Jie Feng · Yuanyuan Shi · Deepjyoti Deka

Reinforcement learning (RL) has shown great potential for designing voltage control policies, but their performance often degrades under changing system conditions such as topology reconfigurations and load variations. We introduce a topology-aware online policy optimization framework that leverages data-driven estimat...

L'enfrontament de Rodrigo Hurtado de Mendoza i Vicent Peris a la Xàtiva de la Germania.

Valles Borras, Vicent Joan

Li-induced Stress Distributions in Si Thin Films with Chevron-like Nanostructures

Francois LIENARD (ORCID: 0000-0001-6825-454X) · Atacan ASCI · Henrik ROTVÆR BRATLIE · Jozef KECKES · y 4 más

Silicon is one of the most promising anode materials in solid-state batteries due to its very high specific capacity. Current results are however still in an infant state in terms of electrochemical performance, analytical characterization and mechanistic understanding. During lithiation/delithation, Si undergoes a sub...

The Boussinesq equation on the half-line

Christophe Charlier

We study the initial-boundary value problem for the Boussinesq equation on the half-line. Assuming that the solution exists, we prove that it can be recovered from its initial-boundary values via the solution of a $3\times 3$ Riemann-Hilbert problem. The contour consists of $18$ arcs on the unit circle, $18$ segments a...

Ex-situ and In-situ Analysis of Stress and Microstructure in Solid State Electrolytes after Ion Implantation

Kevin KUTLESA · Celia POLOP · Tobias HUBER · Henrik ROTVÆR BRATLIE · y 8 más

Lithium dendrites compromise the reliability of solid state batteries by a formation of short-circuits. There is a need to develop novel strategies to suppress dendrites formation and/or decelerate their growth. Our group suggested a strategy to modify the properties of solid state electrolytes by ion implantation, whi...

Inhouse Research Florian - PIT

Lukas BEYER · FLORIAN JURRIES

Tomography scans on steel-LaFeSiMn composite wires

Pulsed electric field (PEF)-assisted lactic acid fermentation of red bell pepper: Kinetic acceleration and microstructural mechanisms shaping quality

Emilia Janiszewska-Turak · Szymon Ossowski · Zuzanna Mierzejewska · Katarzyna Pobiega · y 1 más