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dc.contributor.author
Bouchard, Felix
dc.contributor.author
Soldera, Marcos Maximiliano
dc.contributor.author
Baumann, Robert
dc.contributor.author
Lasagni, Andrés Fabián
dc.date.available
2023-01-05T12:07:18Z
dc.date.issued
2021-04
dc.identifier.citation
Bouchard, Felix; Soldera, Marcos Maximiliano; Baumann, Robert; Lasagni, Andrés Fabián; Hierarchical microtextures embossed on PET from laser-patterned stamps; MDPI AG; Materials; 14; 7; 4-2021; 1-16
dc.identifier.issn
1996-1944
dc.identifier.uri
http://hdl.handle.net/11336/183464
dc.description.abstract
Nowadays, the demand for surface functionalized plastics is constantly rising. To address this demand with an industry compatible solution, here a strategy is developed for producing hierarchical microstructures on polyethylene terephthalate (PET) by hot embossing using a stainless steel stamp. The master was structured using three laser-based processing steps. First, a nanosecond-Direct Laser Writing (DLW) system was used to pattern dimples with a depth of up to 8 µm. Next, the surface was smoothed by a remelting process with a high-speed laser scanning at low laser fluence. In the third step, Direct Laser Interference Patterning (DLIP) was utilized using four interfering sub-beams to texture a hole-like substructure with a spatial period of 3.1 µm and a depth up to 2 µm. The produced stamp was used to imprint PET foils under controlled temperature and pressure. Optical confocal microscopy and scanning electron microscopy imaging showed that the hierarchical textures could be accurately transferred to the polymer. Finally, the wettability of the single- and multi-scaled textured PET surfaces was characterized with a drop shape analyzer, revealing that the highest water contact angles were reached for the hierarchical patterns. Particularly, this angle was increased from 77° on the untreated PET up to 105° for a hierarchical structure processed with a DLW spot distance of 60 µm and with 10 pulses for the DLIP treatment.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
MDPI AG
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
DIRECT LASER INTERFERENCE PATTERNING
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DIRECT LASER WRITING
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HIERARCHICAL STRUCTURES
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HOT EMBOSSING
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POLYETHYLENE TEREPHTHALATE
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POLYMER
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STAINLESS STEEL
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WATER CONTACT ANGLE
dc.subject.classification
Otras Ingeniería de los Materiales
dc.subject.classification
Ingeniería de los Materiales
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Hierarchical microtextures embossed on PET from laser-patterned stamps
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-09-29T11:00:32Z
dc.journal.volume
14
dc.journal.number
7
dc.journal.pagination
1-16
dc.journal.pais
Suiza
dc.description.fil
Fil: Bouchard, Felix. Technische Universität Dresden; Alemania
dc.description.fil
Fil: Soldera, Marcos Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas. Universidad Nacional del Comahue. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas; Argentina
dc.description.fil
Fil: Baumann, Robert. Technische Universität Dresden; Alemania
dc.description.fil
Fil: Lasagni, Andrés Fabián. Technische Universität Dresden; Alemania
dc.journal.title
Materials
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3390/ma14071756
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