A5075404776- Particle accelerators and beam dynamics
- Metallic Glasses and Amorphous Alloys
- Particle Accelerators and Free-Electron Lasers
- Microstructure and mechanical properties
- High Entropy Alloys Studies
- Advancements in Battery Materials
- Advanced materials and composites
- Advanced ceramic materials synthesis
- Superconducting Materials and Applications
- Magnetic properties of thin films
- Gyrotron and Vacuum Electronics Research
- High-Temperature Coating Behaviors
- Advanced Battery Materials and Technologies
- Electronic and Structural Properties of Oxides
- Catalytic Processes in Materials Science
- Semiconductor materials and devices
- Magnetic and transport properties of perovskites and related materials
- ZnO doping and properties
- nanoparticles nucleation surface interactions
- Theoretical and Computational Physics
- Metal and Thin Film Mechanics
- Nuclear materials and radiation effects
- Glass properties and applications
- Ferroelectric and Piezoelectric Materials
- Aluminum Alloys Composites Properties
Karlsruhe Institute of Technology
2016-2025
University of Oklahoma
2023-2025
Helmholtz-Institute Ulm
2013-2024
Technical University of Darmstadt
2015-2024
Kirchhoff (Germany)
2023
Nanjing University of Science and Technology
2014-2023
Institute of Nanotechnology
2011-2023
University of California, Irvine
2020-2023
Heidelberg University
2023
Aixtron (Germany)
2022
In recent years, the concept of entropy stabilization crystal structures in oxide systems has led to an increased research activity field "high oxides". These compounds comprise incorporation multiple metal cations into single-phase and interactions among various leading interesting novel unexpected properties. Here, we report on reversible lithium storage properties high oxides, underlying mechanisms governing these properties, influence electrochemical behavior. It is found that effect...
An overview of high-entropy materials for energy applications, including H<sub>2</sub> catalysis and storage, CO<sub>2</sub> conversion, O<sub>2</sub> electrochemical is given the challenges opportunities within this field are discussed.
Thicker electrode layers for lithium ion cells have a favorable to current collector ratio per stack volume and provide reduced cell manufacturing costs due fewer cutting stapling steps. The aim of this work is investigate the delivery energy in such compared with thinner electrodes. In regard, single sided 70 μm 320 NMC based cathodes graphite anodes low binder carbon black contents were prepared tested half full configurations. Thick thin electrodes showed capacity losses only 6% upon...
For the first time, a multi-anionic and multi-cationic high entropy oxyhalide is presented as capacity cathode for Li-ion batteries.
One of the biggest limitations conventional carbon nanotube device fabrication techniques is inability to scale up processes fabricate a large number devices on single chip. In this report, we demonstrate directed and precise assembly single-nanotube with an integration density several million per square centimeter, using novel aspect dielectrophoresis. We show that dielectrophoretic force fields change incisively as nanotubes assemble into contact areas, leading reproducible which...
We report a facile particle mediated aggregation protocol to synthesize "sea urchin"-like gold mesoparticles with tailored surface topography via secondary nucleation and growth process. Surprisingly, these multitip Au are capable of self-assembling into monolayer or multiple layer arrays on Si substrates convincing reproducibility homogeneity over large areas. Raman measurements show that individual sea urchin-like multitipped exhibit high enhancement surface-enhanced scattering (SERS). In...
Multicomponent rare earth oxide (REO) nanocrystalline powders containing up to seven equiatomic elements were successfully synthesized in a single-phase CaF2-type (Fm-3 m) structure. The addition of more than six resulted the formation secondary phase. Annealing at 1000°C for 1 h led (Ia-3) even 7-component system. In absence cerium (Ce4+), phases observed irrespective number cations or extent thermal treatment indicating that played crucial role stabilizing multicomponent REOs into phase pure
This report is based on a ten-week program Gluons and the quark sea at high-energies, which took place Institute for Nuclear Theory (INT) in Seattle Fall 2010. The principal aim of was to develop sharpen science case an Electron-Ion Collider (EIC), facility that will be able collide electrons positrons with polarized protons light heavy nuclei high energies, offering unprecedented possibilities in-depth studies quantum chromodynamics (QCD). organized around following four major themes: (i)...
New multicomponent equiatomic rare earth oxides (ME-REOs) containing 3-7 elements (Ce, Gd, La, Nd, Pr, Sm and Y) in proportions are synthesized using nebulized spray pyrolysis. All the systems crystallized as a phase pure fluorite type (Fm3[combining macron]m) structure spite of high chemical complexity. A nominal increase lattice parameter compared to CeO2 is observed all ME-REOs. X-ray photoelectron spectroscopy performed on ME-REOs confirmed that constituent present 3+ oxidation state,...
An electrically controlled ultra-compact surface plasmon polariton absorption modulator (SPPAM) is proposed. The device can be as small a few micrometers depending on the required extinction ratio and acceptable loss. allows for operation far beyond 100 Gbit/s, being only limited by RC time constants. comprises stack of metal/insulator/metal-oxide/metal layers, which support strongly confined asymmetric (SPP) in 1.55 μm telecommunication wavelength window. Absorption modulation achieved...
Prussian blue analogues (PBAs) are reported to be efficient sodium storage materials because of the unique advantages their metal-organic framework structure. However, issues low specific capacity and poor reversibility, caused by phase transitions during charge/discharge cycling, have thus far limited applicability these materials. Herein, a new approach is presented substantially improve electrochemical properties PBAs introducing high entropy into crystal To achieve this, five different...
Owing to their robust Li-ion storage properties induced by the entropy stabilization effect, transition-metal-based high oxides are considered promising electrode materials for use in batteries. In this work, full-cells comprising (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O anode and LiNi1/3Co1/3Mn1/3O2 cathode were assembled explore potential practical applications. The cycling performance was studied different electrochemical experiments. cells found deliver an initial specific discharge capacity of 446...
Abstract High‐entropy sulfides (HESs) containing 5 equiatomic transition metals (M), with different M:S ratios, are prepared by a facile one‐step mechanochemical approach. Two new types of single‐phase HESs pyrite ( Pa ‐3) and orthorhombic Pnma ) structures obtained demonstrate homogeneously mixed solid solution. The straightforward synthesis method can easily tune the desired metal to sulfur ratio for stoichiometries, utilizing respective sulfides, even pure metals, as precursor chemicals....