A5000457069- Bone Tissue Engineering Materials
- Intermetallics and Advanced Alloy Properties
- Gold and Silver Nanoparticles Synthesis and Applications
- Dental materials and restorations
- Laser-Ablation Synthesis of Nanoparticles
- Titanium Alloys Microstructure and Properties
- Metal and Thin Film Mechanics
- Nanoparticles: synthesis and applications
- nanoparticles nucleation surface interactions
- Metallurgical and Alloy Processes
- X-ray Diffraction in Crystallography
- Calcium Carbonate Crystallization and Inhibition
- Orthopaedic implants and arthroplasty
- biodegradable polymer synthesis and properties
- Ichthyology and Marine Biology
- Nanocluster Synthesis and Applications
- Graphene and Nanomaterials Applications
- Evolution and Paleontology Studies
- Inorganic Chemistry and Materials
- Dental Implant Techniques and Outcomes
- Shape Memory Alloy Transformations
- Paleontology and Evolutionary Biology
- Engineering Technology and Methodologies
- Nanomaterials for catalytic reactions
- Nonlinear Optical Materials Studies
University of Duisburg-Essen
2016-2025
Essen University Hospital
2015-2019
Max-Planck-Institut für Nachhaltige Materialien
2006-2015
Max Planck Society
2006-2015
Czech Academy of Sciences, Institute of Inorganic Chemistry
2015
Abstract High entropy metallic glass nanoparticles (HEMG NPs) are very promising materials for energy conversion due to the wide tuning possibilities of electrochemical potentials offered by their multimetallic character combined with an amorphous structure. Up until now, generation these HEMG NPs involved tedious synthesis procedures where generated particles were only available on highly specialized supports, which limited widespread use. Hence, more flexible synthetic approaches obtain...
Among brain tumors, glioblastoma (GBM) is very challenging to treat as chemotherapeutic drugs can only penetrate the a limited extent due blood–brain barrier (BBB). Nanoparticles be an attractive solution for treatment of GBM they transport across BBB into tumor. In this study, normal and organoids comprising six cell types were developed applied study uptake, penetration, distribution, efficacy fluorescent, ultrasmall gold nanoparticles (AuTio-Dox-AF647s) conjugated with doxorubicin (Dox)...
The composition of the impregnation solution and chemical fibers strongly affect formation all-biopolymer-based composites their structural mechanical properties.
The formation of silver nanoparticles during the reduction with glucose in presence poly(N-vinyl pyrrolidone) as capping agent was followed for more than 3000 min. First, spherical are formed, but later stages, an increasing fraction nanotriangles and also a few nanorods develop. Both trigonal grow time, indicating separate nucleation pathways. domain size increases proportionally to particle diameter is always about 1/4 diameter, that twinned seeds formed very early process then simply by...
We present a study on the formation of silver (Ag) and bimetallic silver-gold (AgAu) nanoparticles monitored by in situ SAXS as well ex TEM, XRD UV-vis analysis flow reactor at controlled reaction temperature. The mechanism is derived from structural parameters obtained experimental data. evolution average particle size pure alloyed shows that growth occurs initially coalescence mechanism. later described Ostwald ripening for process with significantly slower rate. Additionally, data...
We developed a novel method to fabricate copper nanorods in situ poly(ether sulfone) (15 wt %) casting solution by sonochemical reduction of Cu2+ ions with NaBH4. The main twist is the addition ethanol remove excess NaBH4 through Cu(0) catalyzed ethanolysis. This enabled direct use resulting copper-containing dispersions for membrane preparation liquid nonsolvent-induced phase separation and led full utilization source, generating zero metal waste. characterized as presented membranes via...
In molecular biology, the production of proteins can be effectively inhibited by introducing specific oligonucleotides into a living cell (gene silencing or antisense strategy; important for gene therapy). Calcium phosphate nanoparticles serve as carriers biomolecules in such therapeutic applications due to their high biocompatibility and biodegradability. Stable colloids were prepared coating inorganic with single- double-stranded oligonucleotides. The dispersions analysed dynamic light...
Bimetallic silver-gold nanoparticles were prepared by co-reduction using citrate and tannic acid in aqueous solution colloidally stabilized with poly(N-vinylpyrrolidone) (PVP). The full composition range of silver : gold from 0 100 to (n n) was steps 10 mol%. spherical, monodispersed, had a diameter ∼6 nm, except for Ag Au 90 pure which slightly larger. size the nanoalloys determined differential centrifugal sedimentation (DCS) transmission electron microscopy (TEM). By means X-ray powder...
An ultrastructure of Au–Fe alloy nanoparticles is predefined by the Au : Fe target composition under certain size restrictions as predicted theoretical modeling.
X-ray atomic pair distribution functions (PDFs) were collected from a range of canonical metallic nanomaterials, both elemental and alloyed, prepared using different synthesis methods exhibiting drastically morphological properties. Widely applied shape-tuned attenuated crystal (AC) fcc models proved inadequate, yielding structured, coherent, correlated fit residuals. However, equally simple discrete cluster could account for the largest amplitude features in these difference signals. A...
Abstract Zinc oxide particles were synthesized in various sizes and shapes, i.e., spheres of 40-nm, 200-nm, 500-nm diameter rods 40∙100 nm 2 100∙400 (all PVP-stabilized well dispersed water cell culture medium). Crystallographically, the consisted hexagonal wurtzite phase with a primary crystallite size 20 to 100 nm. The showed slow dissolution medium (both neutral; about 10% after 5 days) but dissolved within 1 h two different simulated lysosomal media (pH 4.5 4.8). Cells relevant for...