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Citation link: https://doi.org/10.26092/elib/2602

Publisher DOI: https://doi.org/10.1016/j.ceramint.2015.12.015
BRANDES - Gel casting of large area micro- and sub-micropatterned thin ceramic tapes.pdf
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Gel casting of large area micro- and sub-micropatterned thin ceramic tapes


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Authors: Brandes, Christoph 
Megne Tague, Armelle Cathy 
Kroll, Stephen  
Treccani, Laura 
Rezwan, Kurosch  
Abstract: 
In this study an easy-to-use ceramic processing technique based on temperature-controlled ionotropic gelation of alginate is presented. This method is the breakthrough for simultaneously large scale tape casting and high quality patterning of thin ceramic tapes. Alumina powder (d50¼ 205 nm) is used to cast flexible and on demand shapeable tapes. Compared to conventional ceramic micropatterning, ionotropic gelation combines complexity of the patterned structure over large-scale areas, a high pattern resolution down to sub-mm regime (400 nm) and tape thickness below 300 mm. Obtained green and sintered (1350 1C) micro- and sub-micropatterns are characterized by SEM and quantitative 3D-profilometry focusing on both, pattern quality and pattern aspect ratio. The results show that reproducible thin ceramic tapes featuring positive and negative patterns maintain their aspect ratios after demolding, drying and sintering. This processing route represents a versatile tool for designing tailored ceramics for e.g. microelectromechanical engineered systems, biomaterial or microfluidic applications.
Keywords: Gel casting; Flexible ceramic tape; Micropatterning; High-precision pattern-contour; 3D-surface profilometry
Issue Date: 20-Jan-2016
Publisher: Elsevier {BV}
Funders: European Research Council
Journal/Edited collection: Ceramics International 
Issue: 4
Start page: 5036
End page: 5044
Volume: 42
Pages: 9
Type: Artikel/Aufsatz
ISSN: 02728842
Secondary publication: yes
Document version: Postprint
DOI: 10.26092/elib/2602
URN: urn:nbn:de:gbv:46-elib73465
Institution: Universität Bremen 
Faculty: Fachbereich 04: Produktionstechnik, Maschinenbau & Verfahrenstechnik (FB 04) 
Institute: Fachgebiet 17: Keramische Werkstoffe und Bauteile 
Appears in Collections:Forschungsdokumente

  

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