A5020065384- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Inorganic Fluorides and Related Compounds
- Inorganic Chemistry and Materials
- Radioactive element chemistry and processing
- Fluorine in Organic Chemistry
- Crystallography and molecular interactions
- Synthesis and characterization of novel inorganic/organometallic compounds
- Chemical Synthesis and Characterization
- Luminescence Properties of Advanced Materials
- Crystal Structures and Properties
- Laser-Plasma Interactions and Diagnostics
- Crystal structures of chemical compounds
- Magnetism in coordination complexes
- Organometallic Complex Synthesis and Catalysis
- Lanthanide and Transition Metal Complexes
- Particle Accelerators and Free-Electron Lasers
- Metal-Organic Frameworks: Synthesis and Applications
- Advanced Chemical Physics Studies
- Solid-state spectroscopy and crystallography
- Coordination Chemistry and Organometallics
- Nuclear Materials and Properties
- Magnetic confinement fusion research
- Rare-earth and actinide compounds
- Ammonia Synthesis and Nitrogen Reduction
Philipps University of Marburg
2016-2025
Aalto University
2014-2024
Institut Laue-Langevin
2023
Deutsches Elektronen-Synchrotron DESY
2023
Fluor (United States)
2015-2023
University of Tübingen
2023
Phillips University
2023
Mercedes-Benz (Germany)
2019-2022
Campbell Collaboration
2020-2022
Universität Ulm
2021
Abstract For a long time, Zintl ions of Group 14 and 15 elements were considered to be remarkable species domiciled in solid‐state chemistry that have unexpected stoichiometries fascinating structures, but limited relevance. The revival was heralded by the observation these species, preformed phases, can extracted from lattice solids dissolved appropriate solvents, thus become available as reactants building blocks solution chemistry. recent upsurge research activity this fast‐growing field...
The fusion of multimodal sensor streams, such as camera, lidar, and radar measurements, plays a critical role in object detection for autonomous vehicles, which base their decision making on these inputs. While existing methods exploit redundant information good environmental conditions, they fail adverse weather where the sensory streams can be asymmetrically distorted. These rare ``edge-case'' scenarios are not represented available datasets, architectures designed to handle them. To...
High energy particle accelerators have been crucial in providing a deeper understanding of fundamental particles and the forces that govern their interactions. In order to increase or reduce size accelerator, new acceleration schemes need be developed. Plasma wakefield acceleration, which electrons plasma are excited, leading strong electric fields, is one such promising novel technique. Pioneering experiments shown an intense laser pulse electron bunch traversing plasma, drives fields 10s...
Abstract Lange Zeit betrachtete man die Zintl‐Ionen der Elemente 14. und 15. Gruppe für bemerkenswerte, in Festkörperchemie angesiedelte Spezies, einerseits durch ihre unerwarteten Zusammensetzungen faszinierenden Strukturen auffielen, andererseits aber von nur eingeschränkter Bedeutung waren. Neue Aufmerksamkeit erfuhren Zintl‐Ionen, als feststellte, dass diese festen Zintl‐Phasen vorgeformten Spezies aus ihrem Kristallverband extrahiert, geeigneten Solventien gelöst damit Reaktanten...
One of the technological barriers to electrification transport is insufficient storage capacity Li-ion batteries on which current electric cars are based. The lithium-sulfur (Li-S) battery an advanced technology whose successful commercialization can lead significant gains in and promote wide-spread adoption vehicles. Recently, important Li-S intermediates, including polysulfides, S3•-, Li2S, have been shown present unique X-ray absorption near edge structure (XANES) features at sulfur...
Environment perception is the task for intelligent vehicles on which all subsequent steps rely. A key part of to safely detect other road users such as vehicles, pedestrians, and cyclists. With modern deep learning techniques huge progress was made over last years in this field. However based object detection models cannot predict how certain they are their predictions, potentially hampering performance later tracking or sensor fusion. We present a viable approaches estimate uncertainty an...
Gold linkers: The first soluble gold–germanium cluster was obtained from the reaction of [Au(PPh3)Cl] and K4Ge9. formation gold complex [Ge9Au3Ge9]5− (see picture) shows also an exciting result for chemistry: linearly coordinated atoms characteristics aurophilic contacts between metal can be observed in presence polyanionic Zintl ions. Supporting information this article is available on WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z602003_s.pdf or author. Please note: publisher...
Between Zintl and Wiberg: The tetrahedral silicon cluster [(MesCu)2Si4]4− was obtained from the reaction of K6Rb6Si17 MesCu (Mes=2,4,6-Me3C6H2) in liquid ammonia. Through stabilization with transition metal fragments, highly charged clusters can thus be transferred handled solution.
We give direct experimental evidence for the observation of full transverse self-modulation a long, relativistic proton bunch propagating through dense plasma. The exits plasma with periodic density modulation resulting from radial wakefield effects. show that is seeded by ionization front created using an intense laser pulse copropagating bunch. extends over length following seed point. By varying one order magnitude, we frequency scales expected dependence on density, i.e., it equal to...
The seeded self-modulation of a relativistic, charged particle bunch in plasma is shown to grow both along the and plasma, resulting transverse wakefield amplitudes that far exceed initial seed values.
Abstract The 3d‐metal mediated nitrene transfer is under intense scrutiny due to its potential as an atom economic and ecologically benign way for the directed amination of (un)functionalised C−H bonds. Here we present isolation characterisation a rare, trigonal imido cobalt(III) complex, which bears rather long cobalt–imido bond. It can cleanly cleave strong bonds with bond dissociation energy up 92 kcal mol −1 in intermolecular fashion, unprecedented cobalt complexes. This resulted amido...
Abstract Fluoride ion batteries (FIBs) are a recent alternative all-solid-state battery technology. However, the FIB systems proposed so far suffer from poor cycling performance. In this work, we report La 2 NiO 4.13 with Ruddlesden-Popper type structure as an intercalation-based active cathode material in all solid-state excellent The critical charging conditions to maintain conductivity of cell were determined, which seems be major obstacle towards improving stability FIBs. For optimized...
The <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mn>8</a:mn><a:mtext>−</a:mtext><a:mi>eV</a:mi></a:mrow></a:math> first nuclear excited state in <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:mmultiscripts><b:mi>Th</b:mi><b:mprescripts/><b:none/><b:mn>229</b:mn></b:mmultiscripts></b:math> is a candidate for implementing clock. Doping <c:math...
We show in experiments that a long, underdense, relativistic proton bunch propagating plasma undergoes the oblique instability, which we observe as filamentation. determine threshold value for ratio between transverse size and skin depth instability to occur. At threshold, outcome of experiment alternates filamentation self-modulation (evidenced by longitudinal modulation into microbunches). Time-resolved images density distribution reveal grows an observable level late along bunch,...
Aromatic P: Among the homoatomic polyanions of group 15 elements, Bi42− and Sb42− have been exotic curiosities for a long time, as they are potential 6π aromatic rings. As42− joined lighter congener recently 2002. Considering diagonal relationship P to C, cyclobutadienediide analogue P42− would be expected naturally, but only now has it prepared in form Cs2P4⋅2 NH3 from diphosphane(4).
A recent measurement of the hyperfine splitting in ground state Li-like ${^{208}\mathrm{Bi}}^{80+}$ has established a ``hyperfine puzzle''---the experimental result exhibits $7\ensuremath{\sigma}$ deviation from theoretical prediction [J. Ullmann et al., Nat. Commun. 8, 15484 (2017); J. P. Karr, Phys. 13, 533 (2017)]. We provide evidence that discrepancy is caused by an inaccurate value tabulated nuclear magnetic moment (${\ensuremath{\mu}}_{I}$) $^{209}\mathrm{Bi}$. perform relativistic...
Motility is a central feature of many microorganisms and provides an efficient strategy to respond environmental changes. Bacteria archaea have developed fundamentally different rotary motors enabling their motility, termed flagellum archaellum, respectively. Bacterial motility along chemical gradients, called chemotaxis, critically relies on the response regulator CheY, which, when phosphorylated, inverses rotational direction via switch complex at base motor. The structural difference...
AWAKE is a proton-driven plasma wakefield acceleration experiment. % We show that the experimental setup briefly described here ready for systematic study of seeded self-modulation 400\,GeV proton bunch in 10\,m-long rubidium with density adjustable from 1 to 10$\times10^{14}$\,cm$^{-3}$. short laser pulse used ionization vapor propagates all way along column, suggesting full vapor. occurs bunch, at time and follows affects bunch.
Abstract Automotive radar perception is an integral part of automated driving systems. Radar sensors benefit from their excellent robustness against adverse weather conditions such as snow, fog, or heavy rain. Despite the fact that machine-learning-based object detection traditionally a camera-based domain, vast progress has been made for lidar sensors, and also catching up. Recently, several new techniques using machine learning algorithms towards correct classification moving road users in...