A5031853093- Metallic Glasses and Amorphous Alloys
- Material Dynamics and Properties
- nanoparticles nucleation surface interactions
- Gold and Silver Nanoparticles Synthesis and Applications
- Muon and positron interactions and applications
- Ion-surface interactions and analysis
- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Copper Interconnects and Reliability
- Polymer Nanocomposite Synthesis and Irradiation
- Acoustic Wave Resonator Technologies
- Theoretical and Computational Physics
- Copper-based nanomaterials and applications
- Glass properties and applications
- Advanced Memory and Neural Computing
- Advanced Sensor and Energy Harvesting Materials
- Advanced Photocatalysis Techniques
- Semiconductor materials and devices
- Electron and X-Ray Spectroscopy Techniques
- Conducting polymers and applications
- Multiferroics and related materials
- Membrane Separation and Gas Transport
- Surface Modification and Superhydrophobicity
- Polymer crystallization and properties
- Nanoparticles: synthesis and applications
Kiel University
2016-2025
Fachhochschule Kiel
2015-2025
Clinical Research Center Kiel
2005-2021
Material (Belgium)
2020-2021
Faculty (United Kingdom)
2014-2020
Engineering (Italy)
2014-2020
Instituto de Ciencia de Materiales de Sevilla
2014-2020
Universität Greifswald
2012
Russian Academy of Sciences
2008
Semenov Institute of Chemical Physics
2008
Amorphous metallic alloys, also called glasses, are of considerable technological importance. The metastability these systems, which gives rise to various rearrangement processes at elevated temperatures, calls for an understanding their diffusional behavior. From the fundamental point view, glasses paradigm dense random packing. Since recent discovery bulk it has become possible measure atomic diffusion in supercooled liquid state and study dynamics liquid-to-glass transition systems. In...
The design and fabrication of a plasmonic black absorber with almost 100% absorbance spanning broad range frequencies from ultraviolet (UV) to the near infrared (NIR) is demonstrated. perfect achieved by combination metal film suitable metal/dielectric nanocomposites. Our technique simple, versatile, cost-effective, compatible current industrial methods for solar production.
Varying systematically the structure of glassy poly(amide imide), poly(ester and polyimide, we have studied correlation between free volume transport properties highly selective polymer membranes. Free data were determined by means positron annihilation lifetime spectroscopy (PALS) while originate from time-lag measurements permanent gases. We find a good PALS average hole size coefficients. The is much better than with group contribution methods. It shown that permeation are controlled not...
Abstract Nanocomposites combine favorable features of the constituents on nanoscale to obtain new functionalities. The present paper is concerned with preparation polymer‐based nanocomposites consisting metal nanoparticles in a polymer matrix and resulting functional properties. Emphasis placed vapor phase deposition which inter alia allows incorporation alloy clusters well defined composition tailored filling factor profiles. Examples discussed here include optical composites tuned particle...
The improved hydrogen gas sensing performances of PdO-functionalized ZnO : Pd films compared to pristine are successfully reported in this work. functionalized samples showed excellent properties.
A composed morphology of iron oxide microstructures covered with very thin nanowires (NWs) diameter 15–50 nm has been presented. By oxidizing metallic Fe microparticles at 255 °C for 12 and 24 h, dense NW networks bridging prepatterned Au/Cr pads are obtained. X‐ray photoelectron spectroscopy studies reveal formation α‐Fe 2 O 3 4 on the surface it is confirmed by detailed high‐resolution transmission electron microscopy selected area diffraction (SAED) investigations that NWs single phase...
The reproducible low-cost fabrication of functional metal-polymer nanocomposites with tailored optoelectronic properties for advanced applications remains a major challenge in applied nanotechnology. To obtain full control over the nanostructural evolution at interface and its impact on properties, we employed combined situ time-resolved microfocus grazing incidence small angle X-ray scattering (μGISAXS) UV/vis specular reflectance spectroscopy (SRS) during sputter deposition gold thin...
Abstract We present a comprehensive study of magnetic sensor system that benefits from new technique to substantially increase the magnetoelastic coupling surface acoustic waves (SAW). The device uses shear horizontal are guided by fused silica layer with an amorphous magnetostrictive FeCoSiB thin film on top. velocity these so-called Love follows magnetoelastically-induced changes modulus according field present. SAW is operated in delay line configuration at approximately 150 MHz and...
Plasmonic metamaterials designed for optical frequency have to be shrunk down few 10th of nanometer which turns their manufacturing cumbersome. Here, we shift the performance metamaterial ultraviolet (UV) by using ultrathin nanocomposite as a tunable plasmonic fabricated with tandem co-deposition. It provides possibility realize absorber UV marginal angle sensitivity. Its resonance and intensity can adjusted changing thickness filling factor composite. Presented approach high could pave way...
Nanomaterials for highly selective and sensitive sensors toward specific gas molecules of volatile organic compounds (VOCs) are most important in developing new-generation detector devices, example, biomarkers diseases as well continuous air quality monitoring. Here, we present an innovative preparation approach engineering sensors, which allow full control the dopant concentrations nanoparticles functionalization columnar material surfaces. The main outcome this powerful design concept lies...
Au nanoparticle (NP) decorated heterogeneous TiO2 catalysts are known to be effective in the degradation of various organic pollutants. The photocatalytic performance such Au–TiO2 structures remarkably depends on size, morphology, and surface coverage NPs decorating TiO2. Here we propose an way preparing a highly active nanocluster (NC) thin film by novel photodeposition method. By altering solvent type as well illumination time, achieved well-controlled NCs, which directly influences...
The integration of silver thin films into optoelectronic devices has gained much interest due to their exceptional properties in terms conductivity and compatibility with flexible substrates. For this type application, ultra-thin layers are desirable, because optical transparency. Standard direct current magnetron sputtering (DCMS) is known lead undesirable formation islands at low effective film thicknesses on typical substrates like SiO2 or polystyrene (PS). Therefore, study, we explore...
Volume changes in ${\mathrm{Zr}}_{46.7}{\mathrm{Ti}}_{8.3}{\mathrm{Cu}}_{7.5}{\mathrm{Ni}}_{10}{\mathrm{Be}}_{27.5}$ bulk metallic glass have been observed by positron-annihilation and density measurements. Excess volume of the order 1% is quenched at cooling rates as low 1--2 K/s. The isothermal relaxation kinetics obey a Kohlrausch law with \ensuremath{\beta} exponents \ensuremath{\sim}0.3 between 180 230 \ifmmode^\circ\else\textdegree\fi{}C. effective activation energy...
Nanocomposite films containing Ag nanoparticles embedded in a polymer matrix of Teflon AF, poly(methyl methacrylate) (PMMA) and Nylon 6 were prepared by vapour phase co-deposition high vacuum. A large variation the particle plasmon resonance frequency visible region was obtained increasing volume fraction from 4–80%. The metal measured energy dispersive x-ray spectrometry (EDX) film thickness surface profilometry. position, width strength depend strongly on filling factor, cluster size...