Ingenieurwissenschaften und zugeordnete Tätigkeiten
Filtern
Erscheinungsjahr
Dokumenttyp
- Posterpräsentation (648) (entfernen)
Sprache
- Englisch (648) (entfernen)
Schlagworte
- Corrosion (30)
- Additive manufacturing (29)
- Mechanochemistry (23)
- Nanoparticles (19)
- Glass (18)
- Additive Manufacturing (17)
- Crystallization (16)
- Fluorescence (14)
- In situ (14)
- Computed tomography (13)
- Degradation (13)
- Residual stress (13)
- Biofilm (11)
- Hydrogen (11)
- Laser-induced periodic surface structures (LIPSS) (11)
- Microstructure (11)
- Methanogens (10)
- Nanoparticle (10)
- SAXS (10)
- Sintering (10)
- Thermography (10)
- X-ray refraction (10)
- Boehmite (9)
- Catalysis (9)
- Computed Tomography (8)
- Laser powder bed fusion (8)
- Quality assurance (8)
- AFM (7)
- Cocrystal (7)
- PE-HD (7)
- Selective laser melting (7)
- Synthesis (7)
- 316L (6)
- Amorphous phases (6)
- Automation (6)
- DNA (6)
- Dosimetry (6)
- Electron microscopy (6)
- Femtosecond laser ablation (6)
- Geant4 (6)
- Heterogeneous catalysis (6)
- MIC (6)
- MOFs (6)
- Microdosimetry (6)
- Neutron diffraction (6)
- Phosphates (6)
- Polymer (6)
- Polymorphism (6)
- ToF-SIMS (6)
- Welding (6)
- Archaea (5)
- Coarsening (5)
- Creep (5)
- DFT (5)
- Dielectric spectroscopy (5)
- Dye (5)
- FTIR (5)
- Heat treatment (5)
- LEE (5)
- Laser Powder Bed Fusion (5)
- Milling (5)
- Nanocomposite (5)
- Nanocomposites (5)
- Niobium carbide (NbC) (5)
- Oxidation (5)
- Quantum dot (5)
- Radiation damage (5)
- Reference material (5)
- Self-healing (5)
- Silver nanoparticles (5)
- Stainless steel (5)
- Struvite (5)
- Thin films (5)
- Transition metal (5)
- Transmission electron microscopy (5)
- Wear (5)
- XANES (5)
- Ageing (4)
- AlSi10Mg (4)
- AuNP (4)
- Bioactive (4)
- C-F bond activation (4)
- Concrete (4)
- Corrosion resistance (4)
- Crack growth (4)
- DCB (4)
- DNA damage (4)
- Discotic Liquid Crystals (4)
- Energy deposit (4)
- FAIR (4)
- Fatigue (4)
- Flexible crystals (4)
- Friction (4)
- Geant4-DNA (4)
- Graphene (4)
- Hardness (4)
- Hydrogen assisted cracking (4)
- Implants (4)
- Inconel 686 (4)
- Iron oxide nanoparticles (4)
- Korrosion (4)
- Laser Beam Melting (4)
- Laser profilometry (4)
- Low energy electrons (4)
- MCS (4)
- Metal phosphonates (4)
- Microplastic (4)
- Monte-Carlo simulation (4)
- Nano (4)
- Nanoconfinement (4)
- Nanoplastic (4)
- Polymers (4)
- Polymorph (4)
- Radiationtherapy (4)
- Radioactive decay (4)
- SEM (4)
- Simulation (4)
- Spectroscopic ellipsometry (4)
- Steel (4)
- TiO2 (4)
- Tribology (4)
- UHPC (4)
- X-ray diffraction (4)
- XRD (4)
- 3D High-temperature shape screening (3)
- AM (3)
- Ab-initio (3)
- Alloy 2618A (3)
- Aluminium (3)
- Assay (3)
- Bending modulus (3)
- Beta decay (3)
- Biodiesel (3)
- Bonding analysis (3)
- Brachytherapy (3)
- Cancer treatment (3)
- Carbon nanotubes (3)
- Cermets (3)
- Clustered nanoparticles (3)
- Coating (3)
- Computational Chemistry (3)
- Conductivity (3)
- Dangerous goods (3)
- Database (3)
- Diesel (3)
- Diffusion coefficient (3)
- EPR (3)
- Ellipsometry (3)
- Environmental Simulation (3)
- Epoxy (3)
- Flourescence (3)
- Flow cytometry (3)
- Glass ceramic (3)
- Glass composition (3)
- Gold Nanoparticles (3)
- Imaging (3)
- KorroPad (3)
- LIBS (3)
- Laser cladding (3)
- Laser implantation (3)
- Livermore model (3)
- Luminescence (3)
- MIPs (3)
- Machine learning (3)
- Materials Informatics (3)
- Mesoporosity (3)
- Metrology (3)
- Microbial induced corrosion (3)
- Microbiologically influenced corrosion (3)
- Micropatterning (3)
- Microplastics (3)
- Microscopy (3)
- NDT (3)
- NMR (3)
- NP (3)
- NTE (3)
- Nanofibers (3)
- Nanomaterial (3)
- OER (3)
- OH radical (3)
- Optical spectroscopy (3)
- Orientation (3)
- Oxygen Reduction Reaction (3)
- PGM-free catalyst (3)
- PXRD (3)
- Penelope model (3)
- Phase grating (3)
- Polydopamine (3)
- Polyethylene (3)
- Polymer blends (3)
- Quantum dots (3)
- Radiation therapy (3)
- Radiolysis (3)
- Raman Spectroscopy (3)
- Reactive extrusion (3)
- Reference data (3)
- Residual Stress (3)
- Rigidity (3)
- SLM (3)
- Sample preparation (3)
- Sialic acid (3)
- Soda-lime silicate glass (3)
- Sol-gel (3)
- Solid-state (3)
- Specific heat spectroscopy (3)
- Sulfidation (3)
- Surface chemistry (3)
- Synchrotron (3)
- Synchrotron tomography (3)
- TDEP (3)
- TEM (3)
- TOPAS (3)
- TOPAS-nbio (3)
- Thermoelectrics (3)
- Thin Films (3)
- Thin polymeric films (3)
- Ti-6Al-4V (3)
- Two-photon polymerisation (3)
- Upconversion (3)
- VSSA (3)
- Vickers (3)
- WAXS (3)
- Waveguide (3)
- X-ray fluorescence (3)
- XPS (3)
- ZCF (3)
- ZrF4 (3)
- particle scattering (3)
- AGIL (2)
- AIS (2)
- ATR (2)
- Absorption edge tomography (2)
- Adsorbed Layer (2)
- Alkali-silica-reaction (2)
- Aluminium alloys (2)
- Aluminum (2)
- Antimicrobials (2)
- Atomic packing factor (2)
- Atomization (2)
- Austenitic stainless steel (2)
- BAMline (2)
- Bacteria (2)
- Bacterial adhesion (2)
- Barcoding (2)
- Bead (2)
- Bildgebung (2)
- Broadband dielectric spectroscopy (2)
- Building Materials (2)
- Building materials (2)
- CALPHAD (2)
- CCMat (2)
- CCS (2)
- Calcium cobaltite (2)
- Carbon capture (2)
- Carbon dioxide (2)
- Catalysts (2)
- Characterization (2)
- Chemical composition (2)
- Chemically Complex Materials (2)
- Composite (2)
- Composites (2)
- Confocal (2)
- Core-shell (2)
- Corrosion Testing (2)
- Corrosion inhibition (2)
- Corrosion testing (2)
- Crack Propagation (2)
- Crack growth velocity (2)
- Crack healing (2)
- Crack intensity factor (2)
- Creep-resistant steel (2)
- Crystal orientation (2)
- Cycloalyphatic epoxy oligosiloxane (2)
- Damage (2)
- Dark-field transmission electron microscopy (DFTEM) (2)
- Data fusion (2)
- Dental materials (2)
- Deuterium (2)
- Digitalization (2)
- Double cantilever beam (2)
- Duplexstahl (2)
- Durability (2)
- EBSD (2)
- EDX (2)
- Electrocatalysis (2)
- Electrochemistry (2)
- Electron beam induced modification (2)
- Elemental composition (2)
- Emission (2)
- Emission test chamber (2)
- Encoding (2)
- Environmental stress cracking (2)
- Environmental stress cracking (ESC) (2)
- Exchange interaction (2)
- FIB (2)
- FeNi-Oxide NPs (2)
- Ferromagnetism (2)
- Finite element method (2)
- Fire (2)
- Friction and wear (2)
- GMR (2)
- Geothermal (2)
- Gold nanocluster (2)
- Gold nanoparticles (2)
- Green chemistry (2)
- Grüneisen parameter (2)
- Hazardous substances (2)
- Henry's constant (2)
- High Pressure (2)
- High temperature corrosion (2)
- High-temperature corrosion (2)
- Hot stamping (2)
- Hydrogen permeability (2)
- Hydrogen storage (2)
- Image analysis (2)
- Image processing (2)
- Imaging techniques (2)
- In situ heating (2)
- In-situ (2)
- InP (2)
- Inks (2)
- Integrating sphere spectroscopy (2)
- Interatomic potentials (2)
- Ionic Liquid crystals (2)
- Iron (2)
- L-PBF (2)
- LLG (2)
- LMD (2)
- LTCC (2)
- Landau Lifshitz equation (2)
- Laser beam melting (2)
- Laser beam welding (2)
- Laser metal deposition (2)
- Least-squares adjustment (2)
- Lifetime (2)
- Load transfer (2)
- Low Cycle Fatigue (2)
- MMC (2)
- MOF (2)
- Machine Learning (2)
- Macrophages (2)
- Magnesium alloy (2)
- Magnetic moment (2)
- Magnetic nanoparticles (2)
- Martensitic stainless steels (2)
- Metadata schema (2)
- Metal Matrix Composite (2)
- Metal matrix composite (2)
- Metal organic frameworks (2)
- Metals (2)
- Method (2)
- Micromagnetism (2)
- Microwave synthesis (2)
- Mikrobiell induzierte Korrosion (2)
- Modellierung (2)
- Molecularly imprinted polymers (2)
- Multielectrode array sensors (2)
- Multiplexing (2)
- NFDI (2)
- NIR (2)
- Nanomechanics (2)
- Nanosensor (2)
- Neutron (2)
- Neutron Diffraction (2)
- Nichtrostender Stahl (2)
- Non-classical crystallization (2)
- Numerical modeling (2)
- OOMMF (2)
- Oberflächenbearbeitung (2)
- Object oriented micromagnetic framework (2)
- Online Process Monitoring (2)
- Ontology (2)
- Optics (2)
- PBF-LB/M (2)
- Particle (2)
- Phonons (2)
- Photocatalysis (2)
- Pitting corrosion (2)
- Plastic (2)
- Polycarbonate (2)
- Polymer 3R (2)
- Polymer bilayer coatings (2)
- Polypropylene (2)
- Porosity (2)
- Powder Bed Fusion (2)
- Precipitation (2)
- ProMoAM (2)
- Process Monitoring (2)
- Protein (2)
- Proteins (2)
- QHA (2)
- QY (2)
- Quantum yield (2)
- Radiotherapy (2)
- Referenzdaten (2)
- Reflectography (2)
- Resistance (2)
- Resonance frequency (2)
- Roughness (2)
- SCNC (2)
- SEM/EDS (2)
- SIMS (2)
- SWIR (2)
- Scanning electrochemical microscope (SECM) (2)
- Schweißen (2)
- Selected Laser Melting (2)
- Semantic Web Technologies (2)
- Semiconductor (2)
- Silica (2)
- Single molecule (2)
- Single particle spectroscopy (2)
- Small-angle scattering (2)
- SnO2 (2)
- Stochastic Landau Lifshitz Gilbert equation (2)
- Strahlen (2)
- Structural Health Monitoring (2)
- Surface functionalization (2)
- Surface integrity (2)
- Synchrotron X-Ray Refraction (2)
- Synchrotron X-ray computed tomography (2)
- Syngle Crystal alloy (2)
- Thermally induced porosity (2)
- Thermoelectric materials (2)
- Thin film metrology (2)
- Titanium (2)
- Tool wear (2)
- Topotactic transformation (2)
- Traceability (2)
- Transition metals (2)
- Tungsten carbide (WC) (2)
- Ultrashort laser processing (2)
- Ultrasonic-assisted milling (2)
- Ultrasound (2)
- VOC (2)
- Vessels (2)
- Wasserstoff (2)
- Water content (2)
- Water speciation (2)
- Wetting (2)
- Wood (2)
- X-ray computed tomography (2)
- XRF (2)
- Zeolitic imidazolate framework (2)
- beta particle (2)
- cylinders (2)
- 18HLT01 MetVes II (1)
- 29Si-27Al TRAPDOR MAS (1)
- 3D (1)
- 3D High-temperatue shape screening (1)
- 3D analysis (1)
- 3D coherence scanning interferometry (CSI) (1)
- 3D imaging (1)
- 3D printing (1)
- 3D tomography (1)
- 5-hydroxynicotinic acid (1)
- 5G (1)
- AFM-IR (1)
- AISI 304L (1)
- ALD (atomic layer deposited) (1)
- AM IN718 (1)
- ASAXS (1)
- ASR (1)
- ATH (1)
- ATRP (1)
- Absolute flourometry (1)
- Absorption edge (1)
- Acoustic Emission (1)
- Acoustic Emission (AE) (1)
- Acrylamide based polymers (1)
- Active pharmaceutical ingredient (API) (1)
- Additive Manufacture (1)
- Additive surface treatment (1)
- Admixtures (1)
- Adsorbed layer (1)
- Advanced manufacturing (1)
- Advanced nanomaterials (1)
- Affinity chromatography (1)
- Affinity extraction (1)
- Affinity support (1)
- Ag2S (1)
- Aggressive environement (1)
- Aggressive environment (1)
- Aging (1)
- Aging mechanisms (1)
- Air Void System (1)
- Air exchange rate (1)
- Al alloy (1)
- Al-Cu-Li alloys (1)
- Al2O3 (1)
- Al2O3 thin films (1)
- AlSi10Mg alloy (1)
- Albumin (1)
- Alcali activated binders (1)
- Alkaline earth metal (1)
- Aln (1)
- Alumina (1)
- Aluminium Alloy (1)
- Aluminum oxide (1)
- Amino acid analysis (1)
- Amorphous silica particles (1)
- Amphiphilicity (1)
- Amplification (1)
- Anaerob (1)
- Analyser-based imaging (1)
- Analytical solution (1)
- Anisotropy (1)
- Annealing study (1)
- Anodic Aluminum Oxide (1)
- Anodization (1)
- Antibiotics (1)
- Antibodies (1)
- Antibody purification (1)
- Aromatic amino acid analysis AAAA (1)
- Artefact (1)
- Artificial digestion (1)
- Asphaltene content (1)
- Assays (1)
- Atmospheric Corrosion (1)
- Atmospheric Plasma Spraying (1)
- Atomic Force Microscopy (1)
- Atomic force microscopy (1)
- Atomic fraction (1)
- Austenitic stainless steels (1)
- Austenitic steel (1)
- Automatisation (1)
- BADGER film (1)
- BBR (1)
- BLE (1)
- BSA (1)
- BTS (1)
- Bacterial growth (1)
- BadgerFilm (1)
- Bench braking sequence (1)
- Beta particle (1)
- Beton (1)
- Bewitterung (1)
- Bexarotene (1)
- Bio Ceramics (1)
- Bio-SAXS (1)
- Bio-receptive (1)
- BioSAXS (1)
- Bioactive glass (1)
- Biocide (1)
- Biocides (1)
- Biocomposite (1)
- Biocorrosion (1)
- Biofilm cultivation (1)
- Biofilm formation (1)
- Biofilm growth (1)
- Biofilms (1)
- Bioimaging (1)
- Biomimetics (1)
- Bioreceptivity (1)
- Bioresorbable (1)
- Bitumen (1)
- Bluetooth Low Energy (1)
- Boehmite alumina (1)
- Bonding Analysis (1)
- Bovine serum albumin (1)
- Bragg-edge (1)
- Brazing (1)
- Brittle / ductile fracture behavior (1)
- Brittle fracture (1)
- Brown-rot fungi (1)
- Build Angle (1)
- Building products (1)
- Bulk diffusion (1)
- Bulk material (1)
- Bulk properties ageing (1)
- Burst pressure (1)
- Burst test (1)
- C-C coupling (1)
- CALPHAD databases analysis (1)
- CEO (1)
- CERN (1)
- CFD (1)
- CMAS (1)
- CONSENS (1)
- CUSP (1)
- Calcium sulfoaluminate cement (1)
- Calculation (1)
- Camera (1)
- Capsules (1)
- Carbide (1)
- Carbon (1)
- Carbon Fiber Reinforced Plastics (1)
- Carbon dot (1)
- Carbon fibers (1)
- Carbon nanomembranes (1)
- Carrier Gas Hot Extraction (1)
- Carrier gas hot extraction (1)
- CdSe (1)
- Cearmics (1)
- Cell imaging (1)
- Cement (1)
- Cement hydration (1)
- Ceramic (1)
- Ceramic spring (1)
- Ceramic-ceramc joints (1)
- Ceramics (1)
- Cermet (1)
- Certification (1)
- Certified reference material (1)
- Certified standards (1)
- Chemical Bonds (1)
- Chemical analyses (1)
- Chemical compositions (1)
- Chemically Complex Alloy (1)
- Cheminformatics (1)
- Chromatography (HIC) (1)
- Chromium (1)
- Chromium (III) complexes (1)
- Chromium oxide (1)
- Climate chamber simulation (1)
- Co-axial monitoring (1)
- Coatings (1)
- Coda Wave Interferometry (1)
- Coherent Rayleigh OTDR (1)
- Cold Spray (1)
- Column chromatography (1)
- Columnar crystal growth (1)
- Columnar liquid crystals (1)
- Compatible solute (1)
- Complex concentrated alloy (CCA) (1)
- Component test (1)
- Composite cylinder (1)
- Composition (1)
- Compound (1)
- Compression (1)
- Compsite tapes (1)
- Configurational entropy (1)
- Confined Columnar Liquid Crystals (1)
- Confocal fluorescence microscopy (1)
- Conservation (1)
- Construction products (1)
- Consumer articles (1)
- Contact resonance (1)
- Conventional testing (1)
- Convolutional neural networks (1)
- Coordination polymer (1)
- Core-shell architecture (1)
- Core/shell materials (1)
- Corosion (1)
- Corrosion behaviour (1)
- Corrosion investigations (1)
- Corrosion product layer (1)
- Corrosion products (1)
- Corrosion protecting system (1)
- Corundum grinding (1)
- Cosolute (1)
- Crack (1)
- Crack evolution (1)
- Crack propagation (1)
- Crack propagation analysis (1)
- Cracks (1)
- Creep-resistant Steel (1)
- Crush (1)
- Cryo-TEM (1)
- Crystal Engineering (1)
- Crystal plasticity (1)
- Crystal structure (1)
- Crystalline structure (1)
- Curing Monitoring (1)
- Curvelet Transform (1)
- Cutting material (1)
- Cutting tool (1)
- Cutting tools (1)
- Cyclic R-curve (1)
- DED-L (1)
- DIC assisted compression (1)
- DIN EN ISO/IEC 17025:2018 (1)
- DRIFTS (1)
- DSR (1)
- Damage Analysis (1)
- Damage mechanism (1)
- Damage repair (1)
- Dangerous goods packaging (1)
- Dangerous goods packagings (1)
- Dark-field transmission electron microscopy (1)
- Data (1)
- Data Interoperability (1)
- Data Science (1)
- Data analysis (1)
- Databases (1)
- Datenanalyse (1)
- Deep Learning (1)
- Defect detection (1)
- Defects (1)
- Degradation of Mechanical Properties (1)
- Degree of damage (1)
- Degree of purity (1)
- Dendrimersomes (1)
- Dendritic amphiphiles (1)
- Density (1)
- Density Functional Theory (1)
- Dental material (1)
- Depth-profiling (1)
- Design Fire (1)
- Destabilization (1)
- Detection (1)
- Dielectric Spectroscopy (1)
- Diffraction (1)
- Diffraction Enhanced Imaging (1)
- Diffusion (1)
- Diffusion Coefficient (1)
- Diffusion barrier (1)
- Digital material representation (1)
- Digital twin (1)
- Diopside (1)
- Direct fluorine-metal bond (1)
- Direct laser writing (1)
- Discotic Liquid Crystal (1)
- Discotic liquid crystals (1)
- Distortion (1)
- Distributed acoustic sensing (1)
- Distributed fiber optic sensors (1)
- Distributed vibration sensing (1)
- Distribution during filling (1)
- Doping study (1)
- Downstream processing (1)
- Dredging mud (1)
- Drop test (1)
- Duplex stainless steel (1)
- Duplex stainless steels (1)
- Dust analysis (1)
- Dynamic light scattering (1)
- Dynamics (1)
- EBSD analysis (1)
- EC4SafeNano (1)
- EDS (1)
- EDX Analysis (1)
- EDXRD (1)
- EMN (1)
- EMPIR project (1)
- EPMA (1)
- ESEM (1)
- ESI-TOF-MS (1)
- EU H2020 project (1)
- Ectoin (1)
- Ectoine (1)
- Eddy Current (1)
- Einkristalllegierung (1)
- Eisen (1)
- Elastomer (1)
- Elastomers (1)
- Electro catalyst (1)
- Electrochemical noise (1)
- Electrodeposited Ni - coatings (1)
- Electrolysis (1)
- Electromicroscopy (1)
- Electron Backscatter Diffraction (1)
- Electron Microscopy (1)
- Electron Probe Microanalysis (EPMA) (1)
- Electron beam (1)
- Electron probe microanallysis (EPMA) (1)
- Electron probe microanalysis (EPMA) (1)
- Electrospinning (1)
- Elevated Temperatures (1)
- Elevated temperatures (1)
- Ellipsometric metrology (1)
- Emission chamber testing (1)
- Energetic materials (1)
- Energy (1)
- Energy dispersive X-ray spectroscopy (1)
- Engineered Nanomaterials (1)
- Environment (1)
- Epox (1)
- Epoxy nanocomposite (1)
- Er(III) (1)
- Erosion (1)
- European Metrology Network (1)
- European standard (1)
- Exciton diffusion (1)
- Experimental study (1)
- Explosionsschutz (1)
- Extracellular polymeric substances (1)
- Extracellular vesicles (EV) (1)
- Extrusion (1)
- FEM (1)
- FIB/SEM (1)
- FNCT (1)
- FTIR spectroscopy (1)
- Far-infrared spectroscopy (1)
- Fatigue Crack Growth (1)
- Fatigue crack growth (1)
- Fatigue damage (1)
- Façade (1)
- Fe-Cr alloys (1)
- Fe-Ni (1)
- Fe2TiO5 (1)
- FeCr- alloys (1)
- FeNi (1)
- FeNi thin film (1)
- FeSnOx (1)
- Femtosecond laser (1)
- Femtosecond laser processing (1)
- Fiber (1)
- Fiber reinforced dental post (1)
- Fiber sensors (1)
- Fiber-optic microarray (1)
- Fiberglass composite (1)
- Film depositition (1)
- Film thickness determination (1)
- Finite Element Method (1)
- Finite Element Modelling (1)
- Fire Retardant (1)
- Flow Cell (1)
- Flow-System (1)
- Fluorescence quenching (1)
- Fluorescence spectroscopy (1)
- Fluorescent dyes (1)
- Fluorescent polymer optical fibres (1)
- Fluoride (1)
- Fluorides (1)
- Fluorine Interaction (1)
- Foam tiles (1)
- Focussed ion beam growth (1)
- Force distance curves (1)
- Formaldehyde (1)
- Foundation (1)
- Fractional factorial (1)
- Fractography (1)
- Fracture Toughness (1)
- Fracture surface analysis (1)
- Fragmentation (1)
- Fre (1)
- Fresnoit (1)
- Full Notch Creep Test (1)
- Full Notch Creep Test (FNCT) (1)
- Full-Notch Creep Test (FNCT) (1)
- Fullerene (1)
- Functional group detection (1)
- Functionality type distribution (1)
- Funtional Groups (1)
- G5P (1)
- GD-OES (1)
- GEXRF (1)
- GUM-compliance (1)
- GVP (1)
- Gamma-Co60 radiation (1)
- Gamma-irradiation (1)
- Gas Sorption (1)
- Gas solubility (1)
- Gas turbine (1)
- Gas-Staub-Gemische (1)
- Gefahrgut (1)
- Gefahrstoff (1)
- Gel electrolytes (1)
- Gel-type electrolytes (1)
- Gene five protein (1)
- Generator (1)
- Geopolymer (1)
- Geopolymers (1)
- Geothermal energy (1)
- Ggraphene polymer nanocomposite (1)
- Glas (1)
- Glaskeramik (1)
- Glass paints (1)
- Glass transformation temperature (1)
- Glass transition (1)
- Glass-ceramic (1)
- Glue (1)
- Glutaraldehyde (1)
- Gold (1)
- Gold Nanoparticle (1)
- Gold mosaics (1)
- Grain boundary corrosion (1)
- Graphene functionalisation (1)
- Graphene functionalization (1)
- Graphene polymer nanocomposite (1)
- Grazing exit (1)
- Grey cast iron machining (1)
- Growth Kinetics (1)
- Guideline (1)
- HF (1)
- HR-CS-AAS (1)
- HV cable accessories (1)
- HV-Insulation (1)
- Halbleiterphysik (1)
- Hard X-ray photoelectron spectroscopy (HAXPES) (1)
- Harsh environments (1)
- Hatch length (1)
- Hauptkomponentenanalyse (1)
- Hazmat (1)
- Heat Treatment (1)
- Heating oil storage tanks (1)
- Heating oil tanks (1)
- Hexafluorobenzen (1)
- HfO2 (1)
- High Cycle Fatigue (1)
- High Molecular Polyethylene (1)
- High Temperature Testing (1)
- High Voltage Insulation (1)
- High entropy alloy (1)
- High entropy alloys (1)
- High resolution ultrasonic testing (1)
- High temperature (1)
- High temperature corrosion resistance (1)
- High voltage cable accessories (1)
- High-Performance Concrete (1)
- High-density polyethylene (1)
- High-entropy alloys (1)
- High-strength steels (1)
- High-temperature stability (1)
- Historic buildings (1)
- Hollow specimen (1)
- Honeycomb structure (1)
- Human plasma (1)
- Humidity (1)
- Hybrid inorganic/organic copolymers (1)
- Hybride Gemische (1)
- Hydration (1)
- Hydrogen diffusion (1)
- Hydrogen permeation (1)
- Hydrophobic interaction (1)
- Hydrothermal treatment (1)
- Hydroxyectoine (1)
- IN 625 (1)
- IN 718 (1)
- IN718 (1)
- IR (1)
- IR spectroscopy (1)
- Illumina (1)
- ImAFM (1)
- Image Denoising (1)
- Image segmentation (1)
- Immersion tank testing (1)
- Impact excitation (1)
- Impact strength (1)
- In situ Raman (1)
- In situ XRD (1)
- In situ analysis (1)
- In situ diffraction (1)
- In situ measurement (1)
- In situ measurement, (1)
- In situ tensile test (1)
- In situ testing (1)
- In-Situ (1)
- In-Situ Characterization (1)
- In-situ Monitoring (1)
- In-situ SAXS/WAXS (1)
- In-situ compression CT (1)
- In-situ heat treatment (1)
- In-situ loading (1)
- In-situ monitoring (1)
- In-situ tomography (1)
- In718 (1)
- Inconel 718 (1)
- Indoor air (1)
- Infrared spectroscopy (1)
- Initial attachment (1)
- Initial hydration (1)
- Inorganic polymers (1)
- Instrumented indentation testing (1)
- Integrated analysis (1)
- Interface (1)
- Interim storage (1)
- Interlaboratory comparison (1)
- Intermediate (1)
- Internal friction (1)
- Internal oxidation (1)
- Interpenetrating polymer network (1)
- Interphase (1)
- Inverse Analysis (1)
- Inverse analysis (1)
- Inverse problem (1)
- Ionic liquids (1)
- Ionizing radiation damage (1)
- Iridium oxide films (1)
- Iridium-titanium mixed oxides (1)
- Iron aluminides (1)
- Iron oxide (1)
- Isotope analysis (1)
- JNP AdvManuNet (1)
- Keggin Cluster (1)
- Knoevenagel (1)
- Knoevenagel condensation (1)
- Knowledge Readiness Level (1)
- Knowledge Representation (1)
- Korundschleifen (1)
- Kristallplastizität (1)
- LBM (1)
- LCF (1)
- LIBS TIG welding (1)
- LIPSS (1)
- LPBF (1)
- LPSO (1)
- LTCC multilayer (1)
- Laboratory Container (1)
- Laboratory method (1)
- Lanthanide(III) (1)
- Large scale test (1)
- Large-scale production (1)
- Large-scale synthesis (1)
- Large-scale test (1)
- Laser Cladding (1)
- Laser Metal Deposition (1)
- Laser Metal Deposition (LMD) (1)
- Laser ablation (1)
- Laser cludding (1)
- Laser dispersing (1)
- Laser structuring (1)
- Laser-induced pariodic surface structures (1)
- Laser-induced periodic surface strcutures, LIPSS (1)
- Latex (1)
- Lattice structure (1)
- Layer-by-layer deposition (1)
- Leaching process (1)
- Least-Squares Adjustment (1)
- Ligand (1)
- Ligands (1)
- Lightweight structures (1)
- Lignin (1)
- Lignosulfonate (1)
- Liquid phase sintering (1)
- Lithium Ion Batteries (1)
- Lithium batteries (1)
- Lithium-ion batteries (1)
- Lizard (1)
- Load Partition (1)
- Load history (1)
- Loading factor (1)
- Localized corrosion (1)
- Long-term monitoring (1)
- Longitudinal Wave (1)
- Low cycle fatigue (1)
- Lubricants (1)
- Luminescence lifetime measurments (1)
- Luminescent materials (1)
- MIC projekt (1)
- MID IR Spectroscopy (1)
- Machine-Learning Segmentation (1)
- Magic-sized cluster (1)
- Magnesium (1)
- Magnetic nano-particles (1)
- Magnetic stray fields (1)
- Magnetostrictive actuator layer (1)
- Magnetostrictive layer (1)
- Magnetron sputtering (1)
- Manganese oxide (1)
- Material characterization (1)
- Material degradation (1)
- Material design (1)
- Material model (1)
- Material oxidation (1)
- Material selection (1)
- Materialcharakterisierung (1)
- McSAS3 (1)
- Me-TiO2 (1)
- Measurement uncertainty (1)
- Mechanical Behavior (1)
- Mechanical strength (1)
- Mechanichal behaviour (1)
- Mechanism (1)
- Mechanochemical oxidation (1)
- Mechanochemical syntheses (1)
- Mechanochemie (1)
- Median lethal energy deposit (1)
- Medieval glasses (1)
- Medieval stained glass (1)
- Melt Flow Rate (MFR) (1)
- Melt pool behaviour (1)
- Melting (1)
- Mesoporous (1)
- Mesoporous materials (1)
- Mesoporous thin films (1)
- Messunsicherheit (1)
- Metal matrix composites (1)
- Metal organic framework (1)
- Metal powder characterization (1)
- Metal reducing bacteria (1)
- Metal seal (1)
- Micro computed tomography (1)
- Micro-XRF (1)
- Micro-heterogeneity (1)
- Microbially influenced corrosion (MIC) (1)
- Microbiological investigation (1)
- Microbiologically Influrenced Corrosion (MIC) (1)
- Microfluidic (1)
- Micromanipulation (1)
- Micromixer (1)
- Microparticles (1)
- Micropatterned dry adhesive (1)
- Microplastics sampling (1)
- Microprinting (1)
- Microstructure analysis (1)
- Microstructure-property relations (1)
- Mikrobiell beeinflusste Korrosion (1)
- Mineralogie (1)
- Mobile anodisation (1)
- Mobile application (1)
- Model and measurement based analysis (1)
- Modeling (1)
- Moisture (1)
- Moisture drying (1)
- Molar mass distribution (1)
- Molecular Conformation (1)
- Molecular dynamic simulation (1)
- Monitoring (1)
- Monte-Carlo simulations (1)
- Morpho-chemical characterization (1)
- Multi-method Metrology (1)
- Multi-sample analysis (1)
- Multielectrode (1)
- Multiphoton Lithography (1)
- Multiple ageing and rejuvenation (1)
- Multiplexing sensory fiber-optic microarrays (1)
- NDT Monitoring (1)
- NFDI-MatWerk (1)
- Nano-landscape (1)
- Nano-particles alignment (1)
- Nano-powder characterization (1)
- Nanofiller (1)
- Nanomaterial screening (1)
- Nanomaterials (1)
- Nanoparticel based pH-probes (1)
- Nanophysik (1)
- Nanoporous media (1)
- Nanorisk (1)
- Nanosafety (1)
- Nanosensors (1)
- Nanostructures (1)
- Natural rubber (1)
- Nd-sensitizer (1)
- Nd3+ (1)
- Neintron diffraction (1)
- Netron diffraction (1)
- Network Communication (1)
- Neutronen (1)
- Neutronenradiographie (1)
- Ni-base superalloy (1)
- Ni-based alloy (1)
- Nichtrostende Stähle (1)
- Nickel based alloy (1)
- Niobium carbide (1)
- Niobium carbide powder (1)
- Non destructive testing (1)
- Non-classical crystallization theory (1)
- Non-destructive testing (1)
- Novel equipment (1)
- Nuclear Magnetic Resonance (1)
- Numerical Modeling (1)
- Numerical modelling (1)
- OECD (1)
- OH Radical (1)
- OH radical scavenger (1)
- OH radicals (1)
- Oberflächenkeimbildung (1)
- Offshore (1)
- One-part formulation (1)
- Online NMR Spectroscopy (1)
- Open data (1)
- Open science (1)
- Optical Assays (1)
- Optical Emission Spectroscopy (1)
- Optical Tomography (1)
- Optical connector (1)
- Optical criterion (1)
- Optical layer model (1)
- Optical properties (1)
- Optoelektronik (1)
- Orientation-dependent microstructure (1)
- Orientierung (1)
- Osmolyte (1)
- Overlay (1)
- Oxide Glasses (1)
- Oxidglas (1)
- Oxygen reduction reaction (1)
- P25 (1)
- PAEK (1)
- PDMS (1)
- PEG (1)
- PH (1)
- PIM-1 (1)
- PMD Core Ontology (1)
- PMDco (1)
- POSS (1)
- PU Learning (1)
- PVD /ECD process (1)
- Pair Distribution Functions (1)
- Pair distribution function analysis (1)
- Paracetamol (1)
- Partial discharge detection (1)
- Partial penetration (1)
- Particle Synthesis (1)
- Particle measurement (1)
- Particle scattering (1)
- Particle scattering simulations (1)
- Particle size (1)
- Particle size distribution (1)
- Particle size distributuion (1)
- Particle synthesis (1)
- Paste (1)
- Permeability (1)
- Permeation (1)
- Perovskite (1)
- Pharmaceuticals (1)
- Phase composition (1)
- Phasenzusammensetzung (1)
- Phosphate (1)
- Phosphonates (1)
- Phosphonic acids (1)
- Phosphorus (1)
- Photocuring (1)
- Photoluminescence (1)
- Photoresist (1)
- Photovoltaic (1)
- Phthalocyanine (1)
- Piezopolarisation (1)
- Pipeline (1)
- Plattform MaterialDigital (1)
- Pollen (1)
- Polyacrylamide (1)
- Polyaniline (1)
- Polyethylene glycol diacrylate (1)
- Polyethylene terephthalate (1)
- Polyethylene, PE-HD (1)
- Polyglycerol (1)
- Polymer Hydrolysis (1)
- Polymer aging (1)
- Polymer coating (1)
- Polymer nanocomposites (1)
- Polymer optical fibers (1)
- Polymer optical fibre (1)
- Polymer-Ceramic-Composite (1)
- Polymeric membrane (1)
- Polymers of intrinsic microporosity (1)
- Polymethyl methacrylate (1)
- Polyurethan (1)
- Polyurethanes (1)
- Pore orientation (1)
- Pores (1)
- Porosity growth (1)
- Porous Materials (1)
- Porous materials (1)
- Portland cement (1)
- Position detection (1)
- Poster presentation (1)
- Postfluorination (1)
- Powder X-ray diffraction (1)
- Powder method (1)
- Preferred orientation (1)
- Pressure loading (1)
- Pressure tanks (1)
- Process Control (1)
- Processing (1)
- Propagation modes (1)
- Property simulation (1)
- Protective glazing (1)
- Protein a (1)
- Protein hydrolysis (1)
- Protein immobilization (1)
- Protein quantification (1)
- Protein unfolding (1)
- Proton conducting materials (1)
- Proton cunductor (1)
- Proton exchange membrane fuel cells (1)
- Prüfmethode (1)
- Prüfrichtlinie (1)
- Pulse reflection (1)
- Pulse shape analysis (1)
- QD (1)
- QSPR (1)
- Quality control (1)
- Qualitätssicherung (1)
- Quantitative Analysis (1)
- Quantitative NMR (1)
- Quantum Chemistry (1)
- Quantum Dot-Rod (1)
- Quantum Yield (1)
- Quartz Crystal Microbalance QCM (1)
- Quasi-distributed sensing (1)
- Quenching and partitioning (1)
- RAFT (1)
- REACH (1)
- REM (1)
- ROS (1)
- Radical Scavenger (1)
- Radical scavenger (1)
- Radicals (1)
- Radiological inspections (1)
- Raman spectroscopy (1)
- Ratiometric Sensors (1)
- Ratiometric sensors (1)
- Rayleigh scattering (1)
- Recycling (1)
- Reduction 4-nitrophenol (1)
- Reduction of agglomerates (1)
- Reductive amination (1)
- Reference Data (1)
- Reference Dataset (1)
- Reference materials (1)
- Reference nanomaterials (1)
- Reference particles (1)
- Reference procedures (1)
- Reference product (1)
- Reference samples (1)
- Reinforcing Bar (1)
- Reliable characterization (1)
- Repair (1)
- Reproducibility (1)
- Research Data Management (1)
- Research data management (1)
- Residual stress measurements (1)
- Residual stress state (1)
- Residual stresses (1)
- Resonance (1)
- Resonanz (1)
- Reverse-time migration (1)
- Rice husk ash (1)
- Rigid amorphous fraction (1)
- Ringversuch (1)
- Risswachstum (1)
- Robot-assisted galss melting (1)
- Robotische Glasschmelzanlage (1)
- Round robin (1)
- Round robin test (1)
- Rubber (1)
- S-phase (1)
- SALSA (1)
- SDS-PAGE (1)
- SEM analysis (1)
- SEP 1927 (1)
- Safe-by-Design (1)
- Safer by design (1)
- Salt melt (1)
- Sandblasting (1)
- Sandstone (1)
- Sandstorm (1)
- Sanger sequencing (1)
- Sapphire (1)
- Sc-ICP-ToF-MS (1)
- Scaffold (1)
- Scale-bridging (1)
- Scanning electron microscopy (1)
- Scanning electron microscopy (SEM) (1)
- Scanning transmission electron microscopy (STEM) (1)
- Scattering (1)
- Scientific software (1)
- Sea Water (1)
- Selective Electron Beam Melting (1)
- Selective Laser Melting (1)
- Selective laser curing (1)
- Self-assembly (1)
- Self-healing silicone rubber (1)
- Self-powdering (1)
- Self-reactive substances (1)
- Semantic Interoperability (1)
- Semi-metallic friction material (1)
- Sequential learning (1)
- Service life (1)
- Service life model (1)
- Shape (1)
- Shell (1)
- Short chained phthalates (1)
- Shortwave infrared (1)
- Si wafer filter (1)
- Si-Ge (1)
- SiGe (1)
- SiO2 (1)
- Sicherheitstechnische Kenngrößen (1)
- Silica Nanoparticles (1)
- Silica- and Polystyrene Particles (1)
- Silica- and polystyrene particles (1)
- Silicone rubber (1)
- Silver (1)
- Silver nanoparticle (1)
- Simvastatin (1)
- Single cell analysis (1)
- Single crystal X-ray diffraction (1)
- Single cystal (1)
- Single-stranded DNA-binding proteins (1)
- Size and size distribution (1)
- Size effect (1)
- Size-exclusion chromatography (SEC) (1)
- Sliding performances (1)
- Slow Strain Rate Testing (1)
- Slow crack growth (1)
- Slurry (1)
- Small angle x-ray scattering (1)
- Small-angle X-ray scattering (1)
- Small-angle x-ray scattering (1)
- Small-angle xray scattering (1)
- Smart materials (1)
- Smouldering (1)
- Sodiumborosilicate glasses (1)
- Software (1)
- Soil (1)
- Soil-structure interaction (1)
- Solar Cell (1)
- Solid-State-Reaction (1)
- Solution doping (1)
- Sorption (1)
- Spectral multiplexing (1)
- Spectrometry (1)
- Spectroscopic Ellipsometry (1)
- Spectroscopy (1)
- Speed of sound (1)
- Spinel (1)
- Spontane Polarisation (1)
- Spray drying (1)
- Spring constant (1)
- Spruce (1)
- Stabilization of HT-structures at room temperature (1)
- Stabilizer (1)
- Stable suspensions (1)
- Stained glass windows (1)
- Stained glasses (1)
- Stainless Steel (1)
- Stainless steels (1)
- Standard (1)
- Standardisation (1)
- Standardization (1)
- Standardization of Ellipsometry (1)
- Starch (1)
- Starch nanoparticle (1)
- Strain sensors (1)
- Stress cracking resistance (1)
- Strontiumfluoride (1)
- Structural color (1)
- Structural dynamics (1)
- Structural health monitoring (1)
- Subgrain structure (1)
- Submerged arc welding (1)
- Substrate effect (1)
- Sulfiding (1)
- Sulfur (1)
- Superconducting (1)
- Superhydrophilic surface (1)
- Superhydrophobic surface (1)
- Superplasticizer (1)
- Superplasticizers (1)
- Surface (1)
- Surface Chemical Transformation (1)
- Surface Energy (1)
- Surface Plasmon Resonance (1)
- Surface analysis (1)
- Surface characterization (1)
- Surface crystallization (1)
- Surface energy (1)
- Surface functionalities (1)
- Surface group analysis (1)
- Surface modification (1)
- Surface morphology (1)
- Surface structuring (1)
- Surface texturing (1)
- Sustainability (1)
- Synchrotron CT (1)
- Synchrotron Radiation (1)
- Synchrotron Tomography (1)
- Synchrotron X-ray Refraction (1)
- Synchrotron X-ray diffraction (1)
- Synchrotron X-ray refraction (1)
- Synchrotron X-ray refraction radiography (1)
- Synchrotron XRD (1)
- Synchrotron radiation (1)
- Synchrotron refraction radiography (1)
- Synthesizability (1)
- Synthetic air (1)
- TED-GC-MS (1)
- TED-GC/MS (1)
- TEM Image (1)
- TGA-FTIR (1)
- THz and mid IR spectroscopy (1)
- THz spectroscopy (1)
- TIG-welding (1)
- TKD (1)
- TMDSC (1)
- TRIP (1)
- TRIS (1)
- Talbot-Lau interferomerty (1)
- Talbot-Lau interferometry (1)
- Tankdesign (1)
- Technical Lignin (1)
- Temeprature scaling (1)
- Temperature (1)
- Temperature dependence (1)
- Temperature scaling (1)
- Tensile (1)
- Tensile Properties (1)
- Tensile test (1)
- Terahertz Tomography synthetic aperture (1)
- Terahertz synthetic aperture dielectric materials (1)
- Termites (1)
- Ternary quantum dot (1)
- Test method (1)
- Test methods validation (1)
- Test procedure (1)
- Testing (1)
- Textile fibres (1)
- Texture (1)
- Themal Transitions (1)
- Thermal Spray (1)
- Thermal arrier coatings (1)
- Thermal cycling (1)
- Thermal decomposition (1)
- Thermal treatment (1)
- Thermodynamic analysis (1)
- Thermodynamik (1)
- Thermoelectric generator design (1)
- Thermoelectric oxides (1)
- Thermomagnetic material (1)
- Thermomechanics (1)
- Thermoplastic Polyurethane (1)
- Thermoresponsive polymer (1)
- Thermoresponsive polymers (1)
- Thickness (1)
- Thin Films; (1)
- Thin polymer films (1)
- Ti6Al4V alloy (1)
- TiO2 nanoparticle (1)
- Time-offlight secondary ion mass spectrometry (ToF-SIMS) (1)
- Time-resolved (1)
- Titania nanoparticles (1)
- Titanium Dioxide (1)
- Titanium nitride (1)
- Titanium-di-boride (1)
- Titration (1)
- Tomographie (1)
- Tomography (1)
- Tool steel (1)
- Topas (1)
- Topas-MC (1)
- Topas-nBio (1)
- Topography (1)
- Topometry (1)
- Torsional fatigue (1)
- Total scattering analysis (1)
- Transmission Kikuchi Diffraction (TKD) (1)
- Transmission electron microscope (TEM) (1)
- Transmittance (1)
- Transport mechanism (1)
- Tribological behavior (1)
- Tunnel (1)
- Two photon polymerisation (1)
- Two-dimensional liquid chromatography (2D-LC) (1)
- Type III composite pressure receptacles (1)
- Tyrosine (1)
- UCNP (1)
- UCST polymers (1)
- UCST-type polymer (1)
- UPLC (1)
- UV Weathering (1)
- UV-irradiation (1)
- Ultra sound (1)
- Ultra-Thin films (1)
- Ultrafast laser processing (1)
- Ultrasonic (1)
- Ultrasonic Transducer (1)
- Ultrasonic assisted milling (1)
- Ultrasonic echo technique (1)
- Uncertainty (1)
- Uncertainty budgets (1)
- UpConversion (1)
- Upconversion nanoparticles (1)
- Upconverting nanoparticles (1)
- VM12 SHC (1)
- Vacuum (1)
- Vacuum hot extraction (1)
- Validation (1)
- Validierung (1)
- Virtual experiments (1)
- Vitual computer tomography simulation (1)
- Volatile organic compounds (1)
- Waiting time (1)
- Waste heat recovery (1)
- Water/alcohol mixtures (1)
- Wave propagation (1)
- Weld Joint (1)
- White light interference microscopy(WLIM) (1)
- Wood preservation (1)
- Workflow (1)
- X-Ray Diffraction (1)
- X-ray Computed Tomography (1)
- X-ray Diffraction (1)
- X-ray computer tomography (1)
- X-ray diffractometry (1)
- X-ray imaging (1)
- X-ray interferometry (1)
- X-ray scattering (1)
- X-ry Diffraction (1)
- XAS (1)
- Yb(III) (1)
- Yellowing (1)
- Young's modulus (1)
- Young´s modulus (1)
- Zement (1)
- Zeolite (1)
- Zinc and galvanized samples (1)
- Zinc coatings (1)
- ZnSe (1)
- Zonation (1)
- additive manufacturing (1)
- aggregation-induced dual emission (AIDE) (1)
- bioimaging (1)
- burst test (1)
- cocrystal (1)
- creep behaviour (1)
- dangerous goods packagings (1)
- excess isotherms (1)
- excitation power density (1)
- extreme temperature (1)
- gas adsorption (1)
- gas solubility (1)
- high-resolution camera (1)
- hybrid repair (1)
- ionic liquids (1)
- life cycle test (1)
- low energy electrons (1)
- mechanochemistry (1)
- milling (1)
- pH probe (1)
- pH sensing (1)
- polyethylene terephthalate (1)
- porous solids (1)
- position detection (1)
- powder bed fusion of metals utilizing a laser beam (1)
- ssDNA (1)
- stress cracking resistance (1)
- test methods (1)
- µ-XRF (1)
- µCT (1)
- β-cristobalite structure type (1)
Organisationseinheit der BAM
- 6 Materialchemie (187)
- 5 Werkstofftechnik (82)
- 8 Zerstörungsfreie Prüfung (77)
- 6.3 Strukturanalytik (62)
- 8.5 Röntgenbildgebung (52)
- 6.6 Physik und chemische Analytik der Polymere (49)
- 9 Komponentensicherheit (44)
- 1 Analytische Chemie; Referenzmaterialien (41)
- 6.1 Oberflächen- und Dünnschichtanalyse (39)
- 4 Material und Umwelt (34)
Interactions between a polymer and a substrate interface play a vital role in understanding the improvement in thin film material properties as well as serving as a model for nanocomposites. For any non-repulsive polymer-substrate interactions, polymer segments form an irreversibly adsorbed layer and show a slowdown in the glassy dynamics and thus an increase in the thermal glass transition temperature compared to the bulk-like values. The growth kinetics of the adsorbed layer showed a deviation for both poly (bisphenol-A carbonate) (PBAC) and polysulfone (PSU), two bulky polymers containing a functional group (phenyl ring) in the backbone.
Kemnitz et al. developed a fluorolytic route to access metal fluorides 2 such as AlF3 3 and MgF2 4 which possess a high surface area. In aluminium-based systems, the synthetic approach led to amorphous xerogels that can be further converted into Lewis superacids.3 Still, despite zirconium oxide being described as a stronger Lewis acid than other metal oxides 4 zirconium fluoride-based materials have only recently been reported or investigated. 6 In this work we extend the class of amorphous Lewis acidic heterogeneous catalysts to an amorphous ZrF4 that is active in C-F bond activation.
Zirconium chloro fluoride as catalyst for C-F bond activation and HF transfer of fluoroalkanes
(2024)
In this work1, we have successfully synthesised amorphous zirconium chloro fluoride (ZCF), which exhibits medium lewis acidity. In addition to investigating the local coordination sphere around the Zr atoms and the material properties, we were able to establish a catalytic behavior of ZCF in C-F bond activation reactions. We present the first heterogeneous catalyst that performs dehydrofluorination of a fluoroalkane and consecutive hydrofluorination of an alkyne at room temperature.
SWIR luminescent nanomaterials – key chemical parameters for bright probes for in vivo bioimaging
(2024)
A current challenge for studying physio-pathological phenomena and diseaserelated processes in living organisms with non-invasive optical bioimaging is the development of bright optical reporters that enable deep tissue penetration, a high detection sensitivity, and a high spatial and temporal resolution. The focus of this project are nanomaterials, which absorb and emit in the shortwave infrared (SWIR) between ~900–2500 nm where scattering, absorption, and autofluorescence of the tissue are strongly reduced compared to the visible and NIR.
Currently, mandatory requirements and recommendations for the detection of irregularities in laser beam welded joints are based on classic micrographs as set out in the standard ISO 13919-1:2019. Compared to classic micrographs, computed tomography enables a non-destructive, three-dimensional and material-independent mode of operation, which delivers much more profound results. Even in building material testing, methods with limited informative value can be checked and supplemented by CT examinations.
Nowadays, people spend most of their time indoors. Thus, a good indoor air quality is important. Emissions of volatile organic compounds (VOCs) from furniture and building materials can cause health complaints1. Quantitative VOC-emission testing is carried out under standardized conditions in emission test chambers. In the presented project an emission reference material (ERM) is developed that emits a defined mixture of VOCs which is required for quality assurance and -control (QA/QC) measures. Porous materials (e.g zeolites, activated carbons, MOFs or aerogels) are used as reservoir materials and impregnated with VOC. The porous materials are selected, among others, by their pore size, pore size distribution, polarity and availability. Due to their regular pore structure zeolites are tested at first. For a prediction of the emission profile, the ERM is supposed to exhibit a constant emission rate over time. The aim is a stability of ≤ 10 % change in the emission rate over a minimum of 14 days.
Method
For impregnation, the material is placed into an autoclave inside a rotatable basket. The VOC is added and the autoclave is closed. Afterwards, CO2 is inserted. The closed system is then heated to the supercritical point of CO2 (31 °C, 73.75 bar). In this state, the CO2 acts as solvent for the VOC. By rotating the basket, the distribution of the VOC is ensured. After a few minutes, the pressure is decreased slowly and the CO2 is released. For the determination of the emission profile, the impregnated sample is placed into an emission test chamber. These chambers can be operated either with dry or humid air (50 ± 5 % rel. humidity). Every second to third day, air samples are taken and analyzed by gas chromatography. For an ideal impregnation, several different pressures and temperatures as well as impregnation times are tested.
Results
Two zeolite materials tested in dry air conditions reach emission profiles with a decrease of less than 10 % over 14 days (heptane and toluene, respectively). Further it was discovered that smaller pellets of the same zeolite show better results than bigger particles. When the pore size of a zeolite is too small, e.g. 0.3 nm, the VOC cannot be absorbed sufficiently. The main disadvantage of zeolites is their hygroscopicity because it has a large impact on the release of VOC when they are used in emission test chambers under standardized test conditions (23 °C, 50 % rel. humidity). Activated carbons have emission profiles with a larger change over 14 days. However, the high hydrophobicity allows measurements in humid air conditions which was not possible with the before mentioned hygroscopic zeolites. It is possible to impregnate powdered materials as well, and thus powdered non-hygroscopic (n.h.) zeolites were impregnated. Their emission profiles are comparable to those of the activated carbons. The use of methylated hygroscopic zeolites with a decrease in hygroscopicity did not yield successful emission measurements. The change over 14 days is calculated only for the stable phase (~250–300 h).
The desired stability of ≤ 10 % change of the emission rate over 14 days could already be reached under dry testing conditions. Further investigations under humid conditions show that zeolites with high Si/Al-ratios are non-hygroscopic and comparable to activated carbons (20–30 % change). The next step is to reduce the change in the emission rate of these materials to the aimed ≤ 10 % over 14 days.
Laser-induced periodic surface structures (LIPSS) enable a large variety of different surface functionalizations for applications in the fields of optics, fluidics, tribology, or medicine. Moreover, high spatial frequency LIPSS (HSFL) provide an appealing and straightforward way for the generation of surface nanostructures featuring spatial periods even below 100 nm – far beyond the optical diffraction limit. However, the imposed surface functionalities are usually caused by both, topographic and chemical surface alterations. For exploring these effects in detail, multi-method characterization was performed here for HSFL processed on Ti-6Al-4V alloy upon irradiation with near-infrared ps-laser pulses (1030 nm wavelength, ~1 ps pulse duration, 1 – 400 kHz pulse repetition rate) under different scan processing conditions. The subsequent sample characterization involved morphological and topographical investigations by scanning electron microscopy (SEM), atomic force microscopy (AFM), stylus profilometry (SP), as well as near-surface chemical analyses by X-ray photoelectron spectroscopy (XPS), hard X-ray photoelectron spectroscopy (HAXPES) and depth-profiling time-of-flight secondary ion mass spectrometry (TOF-SIMS). The results allow to qualify the laser ablation depth, the geometrical HSFL characteristics and provide detailed insights into the depth extent and the nature of the ps-laser-induced near-surface oxidation arising from the laser-processing in ambient air and into the relevance of heat-accumulation effects at high pulse repetition rates. Moreover, the direct comparison of the HAXPES and XPS data reveals the role of surface-covering organic contaminants adsorbed from the ambient atmosphere without ion-sputter depth profiling. Furthermore, reduction of the oxides by sputtering can be avoided.
Energetic materials (explosives, propellants, pyrotechnics, and gas generators; EM) release large amounts of energy when initiated by mechanical loading and have many technological applications including in energy storage and propulsion. The accidental initiation of an EM – particularly in the wrong setting – has the potential to be catastrophic. Unfortunately, there is little understood about what determines the sensitivity of a given EM. This poses severe restrictions on our ability to design new and safer EMs.
Aiming to better understand the initiation mechanisms of EMs, we here investigate the reactivity of simple, isomorphous azides (MN3 M=Li, Na). Both metal azides contain the same explosophoric azido anions, but differ significantly in their reactivity, presumably owing to different bonding interactions between the anion and the metal cation. This interaction offers a promising probe for X-ray spectroscopy and quantum chemical simulations. In noting that mechanical initiation results from mechanical impact – with high local pressures – we are particularly interested in identifying how this bonding interaction changes as a function of pressure.
This interaction offers a promising probe for X-ray spectroscopy and quantum chemical simulations. In noting that mechanical initiation results from mechanical impact – with high local pressures – we are particularly interested in identifying how this bonding interaction changes as a function of pressure.
Here we show results from DFT simulations that indicate a shift in electronic structure and changes in the metal-azide bond with increasing pressure, which is further investigated through experimental XAS spectra. Together, our results show promising insights into the behaviour of simple metal azide EMs.
To date, there are very few technologies available for the conversion of low-temperature waste heat into electricity. Thermomagnetic generators are one approach proposed more than a century ago. Such devices are based on a cyclic change of magnetization with temperature. This switches a magnetic flux and, according to Faraday’s law, induces a voltage.
Here we give an overview on our research, covering both materials and systems. We demonstrate that guiding the magnetic flux with an appropriate topology of the magnetic circuit improves the performance of thermomagnetic generators by orders of magnitude. Through a combination of experiments and simulations, we show that a pretzel-like topology results in a sign reversal of the magnetic flux. This avoids the drawbacks of previous designs, namely, magnetic stray fields, hysteresis and complex geometries of the thermomagnetic material.
Though magnetocaloric materials had been the first choice also for thermomagnetic generators, they require some different properties, which we illustrate with Ashby plots for materials selection. Experimentally we compare La-Fe-Co-Si and Gd plates in the same thermomagnetic generator. Furthermore, we discuss corrosion and deterioration under cyclic use is a severe problem occurring during operation. To amend this, composite plates using polymer as a matrix have been suggested previously.