| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Taboryski, Rafael Jozef
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (34/34 displayed)
- 20223D printed microrobots controlled by light – Towards environmental and biomedical applications
- 2021Micro 3D Printing by Two-Photon Polymerization: Configurations and Parameters for the Nanoscribe Systemcitations
- 2021Bioinspired microstructured polymer surfaces with antireflective propertiescitations
- 2021Photolithographic Patterning of FluorAcryl for Biphilic Microwell-Based Digital Bioassays and Selection of Bacteriacitations
- 2021Influence of Thermo-Mechanical Mismatch when Nanoimprinting Anti-Reflective Structures onto Small-core Mid-IR Chalcogenide Fibers
- 2021Thermo-mechanical dynamics of nanoimprinting anti-reflective structures onto small-core mid-IR chalcogenide fiberscitations
- 2021Additive manufacturing of polymeric scaffolds for biomimetic cell membrane engineeringcitations
- 2020Engineering of wetting properties for solid surfaces
- 2019Nanoimprinting reflow modified moth-eye structures in chalcogenide glass for enhanced broadband antireflection in the mid-infraredcitations
- 2018Direct nanoimprinting of moth-eye structures in chalcogenide glass for broadband antireflection in the mid-infraredcitations
- 2018Transition to Superwetting for a Nanostructured Surface
- 2018Mapping the transition to superwetting state for nanotextured surfaces templated from block-copolymer self-assemblycitations
- 2016Free-form nanostructured tools for plastic injection moulding
- 2016Laser ablated micropillar energy directors for ultrasonic welding of microfluidic systemscitations
- 2016Determination of stamp deformation during imprinting on semi-spherical surfaces
- 2016Replication of nanopits and nanopillars by roll-to-roll extrusion coating using a structured cooling rollcitations
- 2016MICRO-SCALE ENERGY DIRECTORS FOR ULTRASONIC WELDING
- 2016Rapid Voltammetric Measurements at Conducting Polymer Microelectrodes Using Ultralow-Capacitance Poly(3,4-ethylenedioxythiophene):Tosylatecitations
- 2016Comparison of Ultrasonic Welding and Thermal Bonding for the Integration of Thin Film Metal Electrodes in Injection Molded Polymeric Lab-on-Chip Systems for Electrochemistrycitations
- 2015Multi-height structures in injection molded polymercitations
- 2015Smart plastic functionalization by nanoimprint and injection moldingcitations
- 2015Fiber-Based, Injection-Molded Optofluidic Systemscitations
- 2014Characterization of Injection Molded Structures
- 2014Fabrication and modelling of injection moulded all-polymer capillary microvalves for passive microfluidic controlcitations
- 2013A method for manufacturing a tool part for an injection molding process, a hot embossing process, a nano-imprint process, or an extrusion process
- 2013Ion channel recordings on an injection-molded polymer chipcitations
- 2013Fabrication and characterization of injection molded multi level nano and microfluidic systemscitations
- 2013Surface roughness reduction using spray-coated hydrogen silsesquioxane reflowcitations
- 2012A Pressure Controlled Pinched Flow Fractionation Device for Continuous Particle Separation
- 2012Evaluation of stability for monolayer injection molding tools coating
- 2012Stability of FDTS monolayer coating on aluminum injection molding toolscitations
- 2012All polymer, injection molded nanoslits, fabricated through two-level UV-LIGA processes
- 2012Fabrication of combined-scale nano- and microfluidic polymer systems using a multilevel dry etching, electroplating and molding processcitations
- 2010Oxygen Barrier Coating Deposited by Novel Plasma-enhanced Chemical Vapor Depositioncitations
Places of action
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conferencepaper
Free-form nanostructured tools for plastic injection moulding
Abstract
We present results on a recently developed process to provide nanostructured surfaces on curved free-form injection moulding tools. The nanostructures are prepared using a sol-gel type coating, which can be applied by various means. Nanostructures are transferred from master structures origi-nated typically by lithography. The nanostructures are imprinted by means of flexible stamps. After imprinting, nanostructures in the sol-gel are cured by baking, by which the material is converted to a quartz-like substance. Line patterns with depths up to about 500 nm and aspect ratio of up to 1 have been realized and successfully transferred to plastic parts during injection moulding.As an example, we present theory and results regarding the imprint of pillar nanostructures on a semi-spherical mold surface, followed by injection molding of the same. The deformation of the flexible stamp is characterized by measurement of inter-pillar distance on various points on the sphere, and compared to predictions provided by a geometrical model. Moulded plastic parts show good replication of the pillar structure.There are various practical advantages to the new process: the application of the coating is possible on both flat, single-curved and double-curved surfaces; the coating and the baking step is compatible with typical steel types in common usage for injection moulding; the coating is conformal with a rela-tively high surface roughness up to Ra ≈ 100 nm, accommodating several surface finishing methods such as fine milling and diamond polishing; the coating has slightly insulating properties, which im-proves the nanostructure transfer properties compared to metal nanostructures; several durability studies have shown that the nanostructures on the injection moulding tool surface are unaffected for at least 100.000 injection moulding cycles; the imprinting of nanostructures has been successfully at-tempted with several types of thermoplastic polymer, including PS, ABS, PE, PP, COC (Topaz), and PA (Nylon), showing that most polymers are compatible, while some may require an increase in mold temperature for full transfer of nanostructure depth.In conclusion, the process for nanostructured surfaces on double-curved or free-form injection mould-ing tools relies on flexible stamps, giving rise to predictable deformation of the pattern. The sol-gel process provides for a durable tool with accommodation of imperfect injection tool surface.