A5015221958- Force Microscopy Techniques and Applications
- Adhesion, Friction, and Surface Interactions
- Electromagnetic wave absorption materials
- Advanced Antenna and Metasurface Technologies
- Advanced Surface Polishing Techniques
- Mechanical and Optical Resonators
- Metal and Thin Film Mechanics
- Nanowire Synthesis and Applications
- Metamaterials and Metasurfaces Applications
- Nanofabrication and Lithography Techniques
- Surface Modification and Superhydrophobicity
- Diamond and Carbon-based Materials Research
- Quantum Dots Synthesis And Properties
- Advanced Sensor and Energy Harvesting Materials
- Biotin and Related Studies
- Polymer Surface Interaction Studies
- Fiber-reinforced polymer composites
- Advanced biosensing and bioanalysis techniques
- ZnO doping and properties
- Additive Manufacturing and 3D Printing Technologies
- Flame retardant materials and properties
- Microfluidic and Capillary Electrophoresis Applications
- Ga2O3 and related materials
- Advanced Materials and Mechanics
- Material Properties and Applications
Carl von Ossietzky Universität Oldenburg
2020-2024
Oldenburger Institut für Informatik
2024
The University of Queensland
2016-2021
Centre for Microscopy and Microanalysis
2020-2021
High entropy materials exhibit unparalleled reactivity and tunable electrochemical properties, putting them at the forefront of advances in electrocatalysis for water splitting. Their various interfaces elements are purposefully engineered nanoscale, which is essential to enhancing their characteristics. The exceptional catalytic efficiency observed graphene-coated nanoparticles (NPs) with an inner high-entropy alloy (HEA) (HEA@C) a result combined action several metallic constituents....
Abstract The elastic modulus of ZnO nanowires was measured using a resonance method based on laser Doppler effect and their fracture strains were determined via two-point bending with the aid optical nanomanipulation. moduli diameters 78 to 310 nm vary from 123 154 GPa, which are close bulk value 140 GPa independent surface defects. However, depend significantly diameters, increasing 2.1% 6.0% decrease in diameter 316 114 nm. Post-mortem TEM analysis ends fractured revealed that initiated at...
Abstract The mechanisms responsible for the dielectric response of C-based microwave absorbers remain a long-standing theoretical question. Uncovering these is critical to enhance their absorption performance. To determine how different C forms alter absorbers, FeNi-capped carbon nanotubes (FeNi-CNTs) and FeNi–cored nanoparticles (FeNi-CNPs) are synthesized, comparative study responses then carried out in this study. as-synthesized FeNi-CNTs FeNi-CNPs have similar magnetic properties complex...
Genetic tags allow rapid localization of tagged proteins in cells and tissues. APEX, an ascorbate peroxidase, has proven to be one the most versatile robust genetic for ultrastructural by electron microscopy (EM). Here, we describe a simple method, APEX-Gold, which converts diffuse oxidized diaminobenzidine reaction product APEX into silver/gold particle akin that used immunogold labelling. The method increases signal-to-noise ratio EM detection, providing unambiguous detection protein,...
Silver nanoparticles (Ag NPs) have been produced by low-dose (1–20 kGy) gamma irradiation of silver nitrate in the presence graphene-based material (graphene oxide or electrochemically exfoliated graphene). The large surface area those materials combined with oxygen-containing functional groups on provided successful nucleation and growth Ag nanoparticles, which resulted a uniformly covered graphene surface. obtained were spherical predominant size distribution 10–50 nm for 10–100 graphene....
The adhesion behaviour of ZnO nanowires is influenced by electron beam induced chemical and electrostatic interactions.
It is imperative to understand the interfacial adhesive behaviour of nanowires (NW) integrated into a nanoelectromechanical system in order design commercialisable nanogenerators as well ultrasensitive sensors. Currently available adhesion characterisation techniques that utilise situ electron microscopy subject nanoscale systems high-vacuum, electron-irradiated environment, potentially altering their interactions. Alternatively, force-sensing conducted air do not provide visual feedback...
Abstract The friction between Al 2 O 3 nanowires and silicon substrates of different surface textures was characterised by use optical manipulation. It found that had significant effect on both the effective contact area a nanowire substrate. A genetic algorithm developed to determine textured frictional force be nearly proportional area, regardless width, depth, spacing orientation textures. Interlocking caused grooves not observed in this study.
Nanoplastic particles (NPs) are ubiquitously present in the environment and their potentially harmful effects on ecological systems remain largely unknown. Owing to minute spatial dimensions, both identification characterization of NPs represent major challenges. In this work, two scanning probe microscopy-based procedures established. Conventional atomic force microscopy (AFM) is applied with commercially available pyramidal tips assess surface topography as well nanoscale deformation...
Experimental characterization techniques for the frictional properties of 1D materials were compiled and critically assessed. Key achievements discussed, future research focuses directions outlined.
Precisely quantifying the adhesion energy of delicate nanobelts on rough substrates remains challenging due to their disparate surface properties and nanoscale dimensions. To overcome these challenges, we propose an optical microscopy-based bridging method quantify ZnS Si in air. Our results revealed that nanobelt–smooth substrate interfacial system exhibits enhanced electrostatic interactions between polar nanobelt surfaces polarized substrate. While, for nanobelt–rough system, values...
The micro- and nanoscale characterization mapping of surface properties behaviour is critical to both physical biological science. Mechanical contact probes are a tool for investigating interface science, have seen greater development diversification in recent years. In particular, mechanical that been fabricated from the bottom-up by assembly synthesized nano- or microscale materials can provide enhanced functionality sensitivity over traditional microcantilevers. This work provides an...