Filtern
Dokumenttyp
- Zeitschriftenartikel (53) (entfernen)
Sprache
- Englisch (53) (entfernen)
Schlagworte
- Laser-induced periodic surface structures (LIPSS) (26)
- Laser processing (10)
- Femtosecond laser (8)
- Surface functionalization (7)
- Radiation protection (6)
- Applications (4)
- Femtosecond laser ablation (4)
- Friction (4)
- Nanostructures (4)
- Silicon (4)
- Ultrashort laser pulses (4)
- Wear (4)
- Femtosecond laser processing (3)
- Laser ablation (3)
- Laser-induced X-ray emission (3)
- Microstructures (3)
- Tribology (3)
- Ultrashort pulsed laser (3)
- Anodization (2)
- Chalcopyrite (2)
- Direct laser interference patterning (DLIP) (2)
- Laser-induced oxide layer (2)
- Laser-induced x-ray emission (2)
- Niobium (2)
- Oxidation (2)
- Polycarbonate (2)
- Steel (2)
- Surface modification (2)
- Ultrashort laser material interaction (2)
- X-ray photoelectron spectroscopy (2)
- ASTM (1)
- Additives (1)
- Amorphization (1)
- Analysis (1)
- Antibacterial surfaces (1)
- Bacterial adhesion (1)
- Biofilm (1)
- Biofilm formation (1)
- Biofilms (1)
- Bioinspiration (1)
- Biomimetic (1)
- Biomimetic surfaces (1)
- Bionic materials (1)
- Bone screws (1)
- Bulk metallic glasses (1)
- Bulk temperature (1)
- Calamistrum (1)
- Capillary waves (1)
- Carbon fibers (1)
- Cell appendages (1)
- Cell-repellent surfaces (1)
- Ceramic matrix composites (1)
- Chemical analysis (1)
- Cribellate spiders (1)
- Crystallization (1)
- D7755-11 (1)
- Dentistry (1)
- Direct laser interference patterning (1)
- Editorial (1)
- Electrochemical treatment (1)
- Electromagnetic theories (1)
- Electron backscattering diffraction (EBSD) (1)
- Electron microscopy (1)
- Electrospinning (1)
- European funding strategies (1)
- F pili (1)
- Femtosecond laser patterning (1)
- Femtosecond laser-processing (1)
- Fluid-flow (1)
- Free electron laser (1)
- Fs-Laser (1)
- Functional properties (1)
- Glasses (1)
- Grain orientation (1)
- Grating (1)
- Hard X-ray photoelectron spectroscopy (HAXPES) (1)
- Heat diffusion (1)
- Hexagonally-arranged nano-protrusions (1)
- Hierarchical micro-nanostructures (1)
- Hierarchical structures (1)
- Implant material (1)
- Industrial application (1)
- Industrial applications (1)
- LIFT (1)
- Large area structuring (1)
- Laser (1)
- Laser Machining (1)
- Laser damage (1)
- Laser-induced forward transfer (1)
- Laser-induced micro- and nanostructures (1)
- Laser-induced nanostructures (1)
- Laser-induced periodic surface strctures (LIPSS) (1)
- Laser-induced periodic surface structures (1)
- Laser-induced periodic surface structures, LIPSS (1)
- Laser-modified surface (1)
- Light concentration (1)
- Literature survey (1)
- Matter reorganization theories (1)
- Medical implants (1)
- Melting (1)
- Micro solar cells (1)
- Micro-concentrator solar cell (1)
- Microbial adhesions (1)
- Modelling (1)
- Nanofibers (1)
- Nanosecond laser (1)
- Nanosecond laser irradiation (1)
- Nanostructuring (1)
- Ophthalmology (1)
- Phase mask (1)
- Phase-contrast microscopy (1)
- Photovoltaics (1)
- Polyethylene (1)
- Polyethylene terephthalate (1)
- Protection housing (1)
- Pulse Laser (1)
- Pump-probe experiments (1)
- Second-generation high temperature superconductor technology (1)
- Secondary hazard (1)
- Self-organization (1)
- Sliding (1)
- Spectroscopic imaging ellipsometry (1)
- Superconductivity (1)
- Surface (1)
- Surface chemistry (1)
- Surface plasmon polaritons (1)
- Surface processing (1)
- Surface structures (1)
- Surface superconductivity (1)
- Surface texture (1)
- Thin films (1)
- Ti-6Al-4V alloy (1)
- Ti6Al4V alloys (1)
- Time-of-flight secondary ion mass spectrometry (ToF-SIMS) (1)
- Time-resolved scattering (1)
- Titanium (1)
- Titanium alloys (1)
- Ultra-short pulse laser processing (1)
- Ultrashort laser processing (1)
- Ultrashort lasers (1)
- Ultrashort pulse laser processing (1)
- X-ray emission (1)
- X-ray emission hazards (1)
- X-ray energies (1)
- X-ray spectrum (1)
Organisationseinheit der BAM
- 6 Materialchemie (53) (entfernen)
Paper des Monats
- ja (3)
Titanium and its alloys are known to allow the straightforward laser-based manufacturing of ordered surface nanostructures, so-called high spatial frequency laser-induced periodic surface structures (HSFL). These structures exhibit sub-100 nm spatial periods – far below the optical diffraction limit. The resulting surface functionalities are usually enabled by both, topographic and chemical alterations of the nanostructured surfaces. For exploring these effects, multi-method characterizations were performed here for HSFL processed on Ti–6Al–4V alloy upon irradiation with near-infrared ps-laser pulses (1030 nm, ≈1 ps pulse duration, 1–400 kHz) under different laser scan processing conditions, i.e., by systematically varying the pulse repetition frequency and the number of laser irradiation passes. The sample characterization involved morphological and topographical investigations by scanning electron microscopy (SEM), atomic force microscopy (AFM), tactile stylus profilometry, as well as near-surface chemical analyses hard X-ray photoelectron spectroscopy (HAXPES) and depth-profiling time-of-flight secondary ion mass spectrometry (ToF-SIMS). This provides a quantification of the laser ablation depth, the geometrical HSFL characteristics and enables new insights into the depth extent and the nature of the non-ablative laser-induced near-surface oxidation accompanying these nanostructures. This allows to answer the questions how the processing of HSFL can be industrially scaled up, and whether the latter is limited by heat-accumulation effects.
In this study, femtosecond laser-induced sub-micrometer structures are generated to modify polyethylene (PE) surface topographies. These surfaces were subjected to bacterial colonization studies with Escherichia coli and Staphylococcus aureus as test strains. The results reveal that the nanostructures do not influence S. aureus coverage, while the adhesion of E. coli is reduced.