A5022709664- Advanced ceramic materials synthesis
- Aluminum Alloys Composites Properties
- Advanced materials and composites
- Quasicrystal Structures and Properties
- Aerogels and thermal insulation
- Analytical Chemistry and Sensors
- Powder Metallurgy Techniques and Materials
- Phase-change materials and chalcogenides
- Mesoporous Materials and Catalysis
- Catalytic Processes in Materials Science
- Acoustic Wave Resonator Technologies
- Multiferroics and related materials
- Ferroelectric and Piezoelectric Materials
- Metallic Glasses and Amorphous Alloys
- Optical Coatings and Gratings
- Intermetallics and Advanced Alloy Properties
- Photonic and Optical Devices
ETH Zurich
2021-2024
Aerogels synthesized from preformed metal oxide nanoparticles exhibit high crystallinity and can be manufactured in transparent form, making them appealing for photo- photothermal catalysis. To date, translucent nanoparticle-based aerogels...
We investigate in-plane ferroelectricity in an epitaxial ferroelectric|dielectric PbTiO3|SrTiO3 (PTO|STO) superlattice under tensile strain. Using a combination of x-ray diffraction and piezoresponse force microscopy, we identify strain-induced periodic nanoscale domain architecture with polarization along the base diagonals PTO unit cell. scrutinize its switching behavior using local trailing fields from scanning-probe tip. For electric field pointing direction specific state, create stable...
Manufacturing complex multi-material metallic components without assembly operations is currently being explored using novel additive manufacturing techniques. For materials combinations that are difficult to process via melting-based processes, Spark Plasma Sintering (SPS) appears as a promising alternative. However, due different sintering kinetics, with very melting points might have be co-sintered at non-optimal conditions. In this work, the potential improve co-sinterability of...
Bulk metallic glass (BMG), metastable quasicrystals (QCs) and two types of approximant phases concurrently form from the melt during cooling at different rates in a Mg–Zn–Yb model alloy. Such an enriched phase competition between various stable crystals has also been found heating transition liquidus temperatures. Metastable QC acts as transient that nucleates first subsequently transforms into equilibrium phase. During heating, Mg-QC mixture which then Mg eutectic microstructure. Nucleation...
A fully coupled electrical-thermo-mechanical model is essential to an in-depth understanding of the spark plasma sintering (SPS) process, where mechanical modeling heavily dependent on constitutive equations and their material parameters. This paper proposes a two-stage approach that integrates direct experimental measurements with numerical simulations, providing more comprehensive reliable basis for identifying parameters in SPS. We develop finite element-based process COMSOL Multiphysics®...
Manufacturing complex multi-material metallic components without assembly operations is currently being explored using novel additive manufacturing techniques. For materials combinations that are difficult to process via melting-based processes, spark plasma sintering (SPS) appears as a promising alternative. However, due different kinetics, with very melting points might have be co-sintered at non-optimal conditions. In this work, the potential improve co-sinterability of dissimilar...