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Structuring of Functional Spider Silk Wires, Coatings, and Sheets by Self-Assembly on Superhydrophobic Pillar Surfaces
KTH, School of Electrical Engineering (EES), Micro and Nanosystems.ORCID iD: 0000-0002-8925-2815
KTH, School of Biotechnology (BIO), Protein Technology.
KTH, School of Biotechnology (BIO), Protein Technology.
KTH, School of Electrical Engineering (EES), Micro and Nanosystems.ORCID iD: 0000-0001-8248-6670
2017 (English)In: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095Article in journal (Refereed) Published
Abstract [en]

Spider silk has recently become a material of high interest for a large number of biomedical applications. Previous work on structuring of silk has resulted in particles (0D), fibers (1D), films (2D), and foams, gels, capsules, or microspheres (3D). However, the manufacturing process of these structures is complex and involves posttreatment of chemicals unsuitable for biological applications. In this work, the self-assembly of recombinant spider silk on micropatterned superhydrophobic surfaces is studied. For the first time, structuring of recombinant spider silk is achieved using superhydrophobic surfaces under conditions that retain the bioactivity of the functionalized silk. By tuning the superhydrophobic surface geometry and the silk solution handling parameters, this approach allows controlled generation of silk coatings, nanowires, and sheets. The underlying mechanisms and governing parameters are discussed. It is believed that the results of this work pave the way for fabrication of silk formations for applications including vehicles for drug delivery, optical sensing, antimicrobial coatings, and cell culture scaffolds.

Place, publisher, year, edition, pages
John Wiley & Sons, 2017.
Keyword [en]
spider silk, superhydrophobic, nanowires, coating, self-assembly, patterning
National Category
Nano Technology
Identifiers
URN: urn:nbn:se:kth:diva-219393DOI: 10.1002/adma.201704325OAI: oai:DiVA.org:kth-219393DiVA: diva2:1162681
Note

QC 20171212

Available from: 2017-12-05 Created: 2017-12-05 Last updated: 2017-12-12Bibliographically approved

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Gustafsson, LinneaJansson, RonnieHedhammar, Myvan der Wijngaart, Wouter
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