A5034227868- Laser Material Processing Techniques
- Adhesion, Friction, and Surface Interactions
- Surface Roughness and Optical Measurements
- Additive Manufacturing Materials and Processes
- Additive Manufacturing and 3D Printing Technologies
- Surface Modification and Superhydrophobicity
- Electronic and Structural Properties of Oxides
- Laser and Thermal Forming Techniques
- Analytical Chemistry and Sensors
- Catalytic Processes in Materials Science
- Transition Metal Oxide Nanomaterials
- Electron and X-Ray Spectroscopy Techniques
- Electrohydrodynamics and Fluid Dynamics
- Tribology and Lubrication Engineering
- Semiconductor materials and devices
- High-Temperature Coating Behaviors
- Advanced Numerical Analysis Techniques
- Advanced Surface Polishing Techniques
- Advanced ceramic materials synthesis
- Advanced materials and composites
- Electrochemical Analysis and Applications
- Optical Coatings and Gratings
Technische Universität Dresden
2021-2025
The nucleation of bubbles on solid surfaces is an important phenomenon in nature and technological processes like electrolysis. During proton-exchange membrane electrolysis, the separation electrically nonconductive oxygen anodic cycle plays a crucial role to minimize overpotential it causes system. This increases efficiency process, making renewable energy sources "power-to-gas" strategy more viable. A promising approach optimize gas by surface functionalization order apply advantageous...
Laser-based processing techniques have proven to be an effective option of modifying polymer surfaces. In this context Direct Laser Interference Patterning in conjunction with the polygon scanner technique is used fabricate textured polystyrene surfaces through ultra-fast beam deflection. This achieved by using a high-average power picosecond laser combination mirror-based scanning system. The two-beam DLIP optical configuration leads formation line-like structures spatial period 21.0 µm....
Transparent conductive oxides (TCOs) are used in solar cells not only to extract photogenerated carriers but also allow sunlight reach the photoactive material. Therefore, controlling electrical and optical properties of such is crucial for optimization efficiency cells. Herein, direct laser interference patterning (DLIP) method control surface morphology, fluorine‐doped tin oxide (FTO) by applying femtosecond pulses. The topography characterization reveals periodic line‐like microstructures...
The present work utilizes direct laser interference patterning in conjunction with a polygon scanner system to fabricate micro‐ and nanostructures on the surface of nickel foils. A picosecond pulsed source an average power ≈470 W is used pattern line‐like structures having spatial periods 11.0 25.0 μm maximum structure depth up 15 μm. scanning speed number consecutive scans, ranging from 5 500, are varied order assess their influence formation process. Furthermore, use ultrashort pulses...
Laser-structuring techniques like Direct Laser Interference Patterning show great potential for optimizing electrodes water electrolysis. Therefore, a systematic experimental study is performed to analyze the influence of spatial period and aspect ratio between structure depth on electrode performance pure Ni electrodes. Using statistical design experiments approach, it found that distance laser-structures decisive processing parameter improvement performance. Thus, electrochemically active...
Abstract The development of new materials and surface functionalization processes has been extensively studied to further improve the performance implants. This work explores direct laser writing method as a potential alternative produce controlled textures on traditional 3Y‐TZP novel high‐toughness composite (Ce‐TZP/Al 2 O 3 /SrAl 12 19 ). A 532 nm picosecond source is used lines in sintered samples both with different values fluence, repetition rate, scanning speed. resulting textured are...
Laser patterning techniques have shown in the last decades to be capable of producing functional surfaces on a large variety materials. A particular challenge for these is treatment additively manufactured parts with high roughness levels. The presented study reports surface modification additive‐manufactured components Ti64 and Al–Mg–Sc (Scalmalloy), aim implementing water‐ ice‐repellent properties. Different laser‐based microstructuring techniques, using nanosecond picosecond pulses, are...
It is well known that the surface topography of a part can affect its function as mechanical performance. In this context, we report on modification additive manufactured components made Titanium 64 and Scalmalloy®, using Direct Laser Interference Patterning technique. our experiments, nanosecond-pulsed near-infrared laser source with pulse duration 10 ns was used. By varying process parameters, periodic structures different depths associated roughness values are produced. Additionally,...
Direct Laser Interference Patterning (DLIP) is an established technology for producing textured and functional surfaces using beam-shaped laser radiation. It consists of high-intensity interference patterns by overlapping two or more beams at the material surface. In this work, new possibilities on metals polymers high-throughput concepts DLIP are presented. The first concept describes development a optical head (called xDLIP) with outstanding depth focus approximately 10 mm, which can be...
Laser-structuring techniques like Direct Laser Interference Patterning show great potential for optimizing electrodes water electrolysis. Therefore, a systematic experimental study based on statistical design of experiments is performed to analyze the influence spatial period and aspect ratio between structure depth electrode performance pure Ni electrodes. The electrochemically active surface area could be increased by factor 12 compared non-structured electrode. For oxygen evolution...
Additive Manufacturing methods enable the fabrication of complex 3D components for a wide range applications, ranging from prototyping up to part manufacturing in industrial several sectors including aerospace and medical industries. In particular, surface quality these parts have be improve order reach standard qualities or obtain specific functions. this frame, research work reports on laser-based finishing treatments additive manufactured specimens consisting new innovative aluminum-alloy...
Additive Manufacturing (AM) processes enable the fabrication of complex three dimensional lightweight parts in a simple way, making these technologies attractive and viable for wide range applications industrial sectors such as aerospace medical industry. However, it is well known that surfaces AM components have relative high roughness level, which can limit their applicability fields. This study describes surface modification by Direct Laser Writing (DLW) Interference Patterning (DLIP) to...