A5080843244- Supercapacitor Materials and Fabrication
- Bone Tissue Engineering Materials
- Gas Sensing Nanomaterials and Sensors
- Catalytic Processes in Materials Science
- Advanced Sensor and Energy Harvesting Materials
- ZnO doping and properties
- Fiber-reinforced polymer composites
- Graphene research and applications
- Aerogels and thermal insulation
- Transition Metal Oxide Nanomaterials
- Catalysis and Hydrodesulfurization Studies
- Polymer Nanocomposites and Properties
- Surface Modification and Superhydrophobicity
- Bone and Joint Diseases
- Mesenchymal stem cell research
- Graphene and Nanomaterials Applications
- Surfactants and Colloidal Systems
- Quantum Dots Synthesis And Properties
- Luminescence Properties of Advanced Materials
- Carbon Nanotubes in Composites
- Heat and Mass Transfer in Porous Media
- Pickering emulsions and particle stabilization
- Random lasers and scattering media
- Enhanced Oil Recovery Techniques
- Polymer Foaming and Composites
Universität Hamburg
2017-2020
Hamburg University of Technology
2017-2020
Abstract Laser diodes are efficient light sources. However, state-of-the-art laser diode-based lighting systems rely on light-converting inorganic phosphor materials, which strongly limit the efficiency and lifetime, as well achievable output due to energy losses, saturation, thermal degradation, low irradiance levels. Here, we demonstrate a macroscopically expanded, three-dimensional diffuser composed of interconnected hollow hexagonal boron nitride microtubes with nanoscopic...
In this work, individual hollow and mesoporous graphitic microtubes were integrated into electronic devices using a FIB/SEM system investigated as gas vapor sensors by applying different bias voltages (in the range of 10 mV–1 V). By increasing voltage, slight current enhancement is observed, which mainly attributed to self-heating effect. A behavior ammonia NH3 sensing applied voltage for with diameters down 300 nm reported. case microtube, an increase in response was while reverse effect...
Carbon-based fibrous scaffolds are highly attractive for all biomaterial applications that require electrical conductivity. It is additionally advantageous if such materials resembled the structural and biochemical features of natural extracellular environment. Here, we show a novel modular design strategy to engineer biomimetic carbon fiber-based scaffolds. Highly porous ceramic zinc oxide (ZnO) microstructures serve as three-dimensional (3D) sacrificial templates infiltrated with nanotubes...
The coating of porous scaffolds with nanoparticles is crucial in many applications, for example to generate catalysis or make bioactive. A standard and well-established method surfaces charged electrophoresis, but when used on scaffolds, this often leads a blockage the pores so that only outermost layers are coated. In study, electrophoretic process monitored situ kinetics nanoparticle deposition investigated. This concept can be extended design periodic (PEPD) strategy, thus avoiding...
Novel gas sensors have been realized by decorating clusters of tubular Aerographite with CdTe using magnetron sputtering techniques. Subsequently, individual microtubes were separated and electrically contacted on a SiO2/Si substrate pre-patterned electrodes. Cathodoluminescence, electron microscopy electrical characterization prove the successful formation polycrystalline thin film enabling an excellent response to ammonia. Furthermore, dynamical ammonia exposure has investigated,...
Tetrapodal ZnO (T‐ZnO) and aerographite networks represent two highly open porous (94.6 99.96%, respectively) model materials on which the impact of an atmospheric‐pressure plasma was studied for first time. The air treatment by a surface barrier discharge caused remarkable modifications T‐ZnO template, leading to large number oxygen vacancies. These observations were made using scanning electron microscopy (SEM) Raman spectroscopy. In second proposed set‐up, pellets material processed jet...
In the present work, we report on development of three-dimensional flexible architectures consisting an extremely porous Aerographite (AG) backbone decorated by InP micro/nanocrystallites grown a single step hydride vapor phase epitaxy process. The systematic investigation hybrid materials scanning electron microscopy demonstrates rather uniform spatial distribution crystallites without agglomeration surface microtubular structures. X-ray diffraction, transmission and Raman scattering...
The manufacturing of a 3D interconnected globular carbon foam, called Globugraphite, is based on the replication zinc oxide (ZnO) template morphology by with simultaneous removing material in chemical vapour deposition (CVD -replica CVD (rCVD)) process.The growth mechanism presented foam affected formation defects at atomic level which leads following to graphitic pieces instead layers.This substructure influences properties, such as electrical conductivity negatively.By undergoing...
Abstract Aerographite is a three‐dimensional carbon foam with tetrapodal morphology. The manufacturing of aerographite carried out in chemical vapor deposition (CVD) process, based on zinc oxide (ZnO) template, which the morphology replicated into hollow shell. During replication template reduced by simultaneous formation structure. CVD process one most efficient methods for various nanostructures, such as graphene or nanotubes (CNTs). Based growth mechanism aerographite, computational fluid...