Frederic Schell
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View article: Direct laser interference patterning for scalable ultrashort-pulsed laser welding
Direct laser interference patterning for scalable ultrashort-pulsed laser welding Open
Direct laser interference patterning (DLIP) utilises the interference from two or more beams for texturing large surfaces at high processing speeds. Using this technique for ultrashort-pulsed (USP) laser welding would aid in scaling this p…
View article: Monitoring and Maintaining Laser Surface Texture Quality Based on Acoustic and Optical Process Emissions during Direct Laser Interference Patterning
Monitoring and Maintaining Laser Surface Texture Quality Based on Acoustic and Optical Process Emissions during Direct Laser Interference Patterning Open
Direct laser interference patterning (DLIP) is a promising technique for fabricating periodic surface structures on large areas, but controlling process quality can be challenging due to laser power fluctuations. This study presents a nove…
View article: Achieving clean, antifouling and antibacterial surfaces with lasers
Achieving clean, antifouling and antibacterial surfaces with lasers Open
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View article: Embossed sub-micron DLIP and LIPSS textures on polypropylene delay surface colonization of Staphylococcus aureus
Embossed sub-micron DLIP and LIPSS textures on polypropylene delay surface colonization of Staphylococcus aureus Open
The increasing bacterial resistance to antibiotics is prompting research into new approaches to design bacterial repellent surfaces. This work investigated the hot embossing of sub-micron direct laser interference patterning (DLIP) and las…
View article: Surfalize: A Python Library for Surface Topography and Roughness Analysis Designed for Periodic Surface Structures
Surfalize: A Python Library for Surface Topography and Roughness Analysis Designed for Periodic Surface Structures Open
Surface roughness measurement is an integral part of the characterization of microtextured surfaces. Multiple established software packages offer the calculation of roughness parameters according to ISO 25178. However, these packages lack …
View article: Replicative Production of Multifunctional Microfluidic Polymer Films for Biomedical Disposables
Replicative Production of Multifunctional Microfluidic Polymer Films for Biomedical Disposables Open
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View article: Single‐ and Multiscale Laser Patterning of 3D Printed Biomedical Titanium Alloy: Toward an Enhanced Adhesion and Early Differentiation of Human Bone Marrow Stromal Cells
Single‐ and Multiscale Laser Patterning of 3D Printed Biomedical Titanium Alloy: Toward an Enhanced Adhesion and Early Differentiation of Human Bone Marrow Stromal Cells Open
This study explores the enhancement of biocompatible titanium‐based implants through surface functionalization for improved bone healing. Specifically, a near‐beta type Ti‐13Nb‐13Zr alloy is 3D printed using laser powder bed fusion and sub…
View article: Increasing Heat Transfer from Metal Surfaces through Laser-Interference-Induced Microscopic Heat Sinks
Increasing Heat Transfer from Metal Surfaces through Laser-Interference-Induced Microscopic Heat Sinks Open
With the increasing processing power of micro-electronic components and increasing spatial limitations, ensuring sufficient heat dissipation has become a crucial task. This work presents a microscopic approach to increasing the surface are…
View article: Fine-tuning effect of Direct Laser Interference Patterning on the surface states and the corrosion behavior of a biomedical additively manufactured beta Ti alloy
Fine-tuning effect of Direct Laser Interference Patterning on the surface states and the corrosion behavior of a biomedical additively manufactured beta Ti alloy Open
Direct laser interference patterning (DLIP) is applied on additively manufactured near-beta Ti-13Nb-13Zr using nanosecond (ns) and picosecond (ps) pulses to tune its surface properties. Multiscale surface chemical and microstructural analy…
View article: Positive Effect of Periodic Micropatterns on Compression Ring Friction
Positive Effect of Periodic Micropatterns on Compression Ring Friction Open
Internal combustion engines are increasingly regulated in regard to efficiency and environmental impact, which requires advanced optimization strategies of engine components. The contact between the top ring and the cylinder liner is criti…
View article: Pulse Duration and Wavelength Effects on the Surface Topography of Direct Laser Interference Patterning Treated Titanium Specimen
Pulse Duration and Wavelength Effects on the Surface Topography of Direct Laser Interference Patterning Treated Titanium Specimen Open
With rising prevalence of bone and skeletal diseases around the world, combatting implant failure through novel approaches has become a growing area of research.A novel way to produce tailored implants is additive manufacturing, which offe…
View article: A comparison of the tactile friction and cutting performance of textured scalpel blades modified by Direct Laser Writing and Direct Laser Interference Patterning processes
A comparison of the tactile friction and cutting performance of textured scalpel blades modified by Direct Laser Writing and Direct Laser Interference Patterning processes Open
Moving surface interactions between rigid and compliant materials have a wide range of functional applications in the automotive, aerospace and medical industries. This study investigates the cutting and frictional performance of textured …
View article: Self‐Limited Ice Formation and Efficient De‐Icing on Superhydrophobic Micro‐Structured Airfoils through Direct Laser Interference Patterning
Self‐Limited Ice Formation and Efficient De‐Icing on Superhydrophobic Micro‐Structured Airfoils through Direct Laser Interference Patterning Open
Forward facing aerodynamic surfaces such as rotors and wings are susceptible to ice build‐up when exposed to atmospheric icing conditions. If not removed, accumulated ice on aircraft surfaces affects aerodynamics or rotation balance, which…