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High-Precision Micropatterning of Polydopamine by Multiphoton Lithography
BAM Bundesanstalt für Materialforschung und -prüfung, Germany.
BAM Bundesanstalt für Materialforschung und -prüfung, Germany.
BAM Bundesanstalt für Materialforschung und -prüfung, Germany.
RISE Research Institutes of Sweden, Bioeconomy and Health, Material and Surface Design.
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2022 (English)In: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, Vol. 34, no 18, article id 2109509Article in journal (Refereed) Published
Abstract [en]

Mussel-inspired polydopamine (PDA) initiates a multifunctional modification route that leads to the generation of novel advanced materials and their applications. However, existing PDA deposition techniques still exhibit poor spatial control, have a very limited capability of micropatterning, and do not allow local tuning of the PDA topography. Herein, PDA deposition based on multiphoton lithography (MPL) is demonstrated, which enables full spatial and temporal control with nearly total freedom of patterning design. Using MPL, 2D microstructures of complex design are achieved with pattern precision of 0.8 µm without the need of a photomask or stamp. Moreover, this approach permits adjusting the morphology and thickness of the fabricated microstructure within one deposition step, resulting in a unique tunability of material properties. The chemical composition of PDA is confirmed and its ability for protein enzyme immobilization is demonstrated. This work presents a new methodology for high-precision and complete control of PDA deposition, enabling PDA incorporation in applications where fine and precise local surface functionalization is required. Possible applications include multicomponent functional elements and devices in microfluidics or lab-on-a-chip systems. © 2022 The Authors

Place, publisher, year, edition, pages
John Wiley and Sons Inc , 2022. Vol. 34, no 18, article id 2109509
Keywords [en]
2D microstructures, micropatterning, multiphoton lithography, polydopamine, Deposition, Enzyme immobilization, Lithography, Topography, 2d microstructure, Advanced materials, Deposition technique, High-precision, Local tuning, Micro patterning, Multiphotons, Spatial control, Microstructure
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Biophysics
Identifiers
URN: urn:nbn:se:ri:diva-59782DOI: 10.1002/adma.202109509Scopus ID: 2-s2.0-85127446560OAI: oai:DiVA.org:ri-59782DiVA, id: diva2:1680468
Available from: 2022-07-04 Created: 2022-07-04 Last updated: 2022-08-10Bibliographically approved

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