A5046544212- Corporate Management and Leadership
- Sociology and Education Studies
- Education Methods and Technologies
- Psychology, Coaching, and Therapy
- Corporate Governance and Management
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Corporate Social Responsibility and Sustainability
- Vocational Education and Training
- Chalcogenide Semiconductor Thin Films
- Gold and Silver Nanoparticles Synthesis and Applications
- Lipid Membrane Structure and Behavior
- High-pressure geophysics and materials
- Linguistic Education and Pedagogy
- Ion-surface interactions and analysis
- TiO2 Photocatalysis and Solar Cells
- Optical properties and cooling technologies in crystalline materials
- International Student and Expatriate Challenges
- RNA Interference and Gene Delivery
- Machine Learning in Materials Science
- 2D Materials and Applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Dendrimers and Hyperbranched Polymers
Friedrich-Alexander-Universität Erlangen-Nürnberg
2016-2025
University of Koblenz and Landau
2007-2014
Bundesministerium für Umwelt, Naturschutz, nukleare Sicherheit und Verbraucherschutz
2007
University of Potsdam
2006
Daimler (Germany)
2001-2002
DIPF | Leibniz Institute for Research and Information in Education
1995
Mercedes-Benz (Germany)
1991
Lipid nanoparticles (LNPs) produced by antisolvent precipitation (ASP) are used in formulations for mRNA drug delivery. The mesoscopic structure of such complex multicomponent and polydisperse nanoparticulate systems is most relevant their delivery properties, medical efficiency, shelf life, possible side effects. However, the knowledge on structural details very limited. Essentially no information publicly available pharmaceutical dispersions approved numerous medicine agencies use humans...
Abstract Metal halide perovskite semiconductors have demonstrated remarkable progress not only in photovoltaics and X‐ray detection but also laser technologies. Particularly appealing is the simplicity with which micro‐crystallites can be epitaxially grown, thereby forming micro‐resonators suitable for lasing. Here, threshold optimized by selecting excitation parameters improving material quality. The latter process conducted formamidinium lead tribromide, emitting green spectral range....
Metal-halide-perovskites revolutionized the field of thin-film semiconductor technology, due to their favorable optoelectronic properties and facile solution processing. Further improvements perovskite devices require structural coherence on atomic scale. Such perfection is achieved by epitaxial growth, a method that based use high-end deposition chambers. Here growth enabled via ≈1000 times cheaper device, single nozzle inkjet printer. By printing, single-crystal micro- nanostructure arrays...
Exploiting small-angle X-ray and neutron scattering (SAXS/SANS) on the same sample volume at time provides complementary nanoscale structural information in two different contrast situations. Unlike an independent experimental approach, truly combined SAXS/SANS approach ensures exactness of probed samples, particularly for situ studies. Here, advanced portable SAXS system that is dimensionally suitable installation D22 zone ILL introduced. The apparatus based a Rigaku switchable...
Stacking orders and topological defects substantially influence the physical properties of 2D van der Waals (vdW) materials. However, inherent features materials challenge effectiveness single characterization techniques in identifying stacking sequences, necessitating correlative approaches. Using bilayer MoS2 as a benchmark, we differentiate its polytypism specific dislocations through transmission electron microscopy (TEM) Raman spectroscopy. Perfect partial were revealed TEM, which are...
A customized portable SAXS instrument has recently been constructed, installed, and tested at the D22 SANS ILL. Technical characteristics of this newly established plug-and-play system have reported (J. Appl. Cryst. 2020, 53, 722). An optimized lead shielding arrangement on a double energy threshold X-ray detector further implemented to substantially suppress unavoidable high-energy gamma radiation background detector. The performance upgraded examined systematically by determining...
Abstract The tuning of the optical properties pyrene, immobilized on alumina nanoparticle surfaces, is demonstrated. To this end, phosphonic acid functionalized pyrene derivatives are shown to self‐assemble into stoichiometrically mixed monolayers featuring hydrophilic, hydrophobic, or fluorophilic ligands and form defined core–shell hybrids depending molecular mixing ratio nature ligand monomer, excimer, mutual emission both evolved. spectroscopic observations explained by respective...
A model identifying defects formation and structural as well chemical changes crucial parameters for a co-catalyst free photocatalytic H 2 evolution activity in epitaxial grown anatase single crystals is presented.
Increased usage of gold nanorods (AuNRs) in various biosensing and medical applications requires tight size morphology control. This is often achieved by tuning the aggregation behavior stabilizing ligand cetrimonium bromide (CTAB). Because role CTAB during AuNR growth still a matter debate, simultaneous small‐angle X‐ray neutron scattering experiments (SAXS/SANS) measurements are performed. The SAXS/SANS have enabled an instantaneous correlation between evolving nanostructure guiding...
Recent total scattering experiments have opened up the possibility to study nanoparticle formation in situ and observe structural transformation from precursor clusters adult particles. Organic ligand molecules interact with precursors of metal oxide nanoparticles, yet their influence onto evolution crystallinity during particle has not been addressed detail; nor ventured into field low-concentration, room-temperature syntheses organic solvents date. In this report, we follow crystallization...
Antisolvent precipitation (AP) is a low-cost and less-invasive preparation alternative for organic nanoparticles compared to top-down methods such as high-pressure homogenization or milling. Here we report on particularly small (NPs) prepared by AP. It has been found various materials that these NPs in their liquid state exhibit significant degree of molecular order at interface toward the dispersion medium including ubiquinones (coenzyme Q10), triglycerides (trimyristin, tripalmitin),...
Abstract High‐quality epitaxial growth of oriented microcrystallites on a semiconductor substrate is demonstrated here for formamidinium lead bromide perovskite, by drop casting precursor solutions in air. The exhibit green photoluminescence at room temperature, as well lasing with low thresholds. Lasing observed even though the fully opaque wavelengths, and it has higher refractive index perovskite active material. Moreover, stable more than 10 9 excitation pulses, which what previously...
Lipid Nanoparticles (LNPs) produced by anti-solvent precipitation (ASP) are used in formulations for mRNA drug delivery. The mesoscopic structure of such complex multicomponent and polydisperse nanoparticulate systems is most relevant their delivery properties, medical efficiency, shelf-life, possible side effects. However, the knowledge on structural details very limited. Essentially no information publicly available pharmaceutical dispersions approved numerous medicine agencies use humans...