Glasses
Division 5.6
Glasses and glass ceramics are key materials in our modern society. They are present in our everyday life in cell phone screens, cooktops, food and beverage recipients, medicine vials, human body protheses, and they have revolutionized long-distance communication. They have revealed to us the microscopic and astronomical worlds raising human knowledge to exceptionally high level for the past two hundred years. It is a vast chemical and topological flexibility, combined with unique processing methods that gives glasses an extremely wide design and property space. This flexibility allows continued material and technological innovation but also brings along fundamental challenges in processing, while preserving structural stability, and property targeting. Increasing demands on sustainable and energy efficient production, for specialized applications require novel approaches to glass development with higher predictability and shorter development times.
To address these challenges, we collaborate with academic and industrial partners on both, fundamental and technological development of automated data-driven approaches as the future backbone for sustainable and highly reproducible glass production and characterization. In addition to implementing modern digital tools for chemical and structural design of glasses, we support the discovery and safe use of advanced glasses or glass-ceramics for the energy sector, hydrogen economy, medical technology, etc. Among our focus and available expertise are mechanical, thermo-kinetic, spectroscopic, and optical properties of glasses.
Our research activities rely on strong ties between fundamental research and interconnected processing and diagnostics, enabling us to contribute to the innovation and safe employment of a millennial old, yet high-tech material, with limitless promise of applications.
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Fields of expertise
- Glass and glass ceramics production (melt quenching, sol gel, heat treatment)
- Production and characterisation of inorganic/hybrid sol-gel-based materials (glasses, xerogels, particles)
- Solubility and transport of gases in glasses, ceramics and metals (water, hydrogen, oxygen, carbon dioxide etc.)
- Kinetics of nucleation, crystallisation, and sintering (sintered glass, glass matrix composites, glass ceramics)
- Complex thermal analysis (relaxation, viscosity, sintering, thermal expansion, phase transformation and decomposition processes < 1600 °C)
- Crack propagation and mechanical moduli
- Design of optical and luminescent glasses and glass ceramics based on rare-earth and transition metal doping, metallic nanoclusters/-particles, phosphors
- Structural-functional characterization based on combined spectroscopic approaches (Raman, solid state NMR, UV-Vis-NIR, steady state and time resolved photoluminescence)
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Main activities
- Hydrogen solubility and mobility in glass
- Hydrogen storage in glass capillaries
- Surface degradation of solar panel glass
- Glass solders for solid oxide fuel cells
- Static fatigue of glass
- Al2O3 sol-gel-based anti-corrosive coatings
- 3D high-temperature laser profilometry
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Range of services/technical equipment
Glass synthesis and characterisation
- Glass melting furnaces
- Robotic glass melting system
- Pressure chamber / Furnaces for thermal treatments (gas flow, vacuum, glovebox)
- Powder processing: high energy planetary ball mills (dry and wet), sieving, mixing, rheometer
- IR spectrometer (microscope)
- Pycnometer (density)
- Mechanical analysis: resonance frequency damping analysis (RFDA, E, G, µ), double cantilever beam (DCB, crack propagation), vickers indenter
Thermal analysis
- Vacuum hot extraction/MS
- Rotational viscometry
- Dilatometry (horizontal and vertical)
- Thermobalances with simultaneous DSC or DTA with coupled MS
- Large-scale thermogravimetric analyser
- Dynamic mechanical thermal analysis
- Rheometer, particle size analysis, spin and dip coating
Crystallisation and sintering
- Hot stage microscope (shrinkage)
- Heating table microscope (in situ crystallization)
- Vertical dilatometer
Spectroscopic characterization
- UV-Vis-NIR spectrometer
- NMR spectrometers (available at Dept. 6)
- Spectrofluorimeter and integrating spheres (available at Dept. 1)
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Publications of the division
In the database PUBLICA you will find publications by BAM employees.
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Prof. Dr. Andréa de Camargo
