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656. 2D and 3D Micropatterning of Mussel-Inspired Functional Materials by Direct Laser Writing

Z. Tavasolyzadeh, P. Tang, M. B. Hahn, G. Hweidi, N. Nordholt, R. Haag, H. Sturm, I. Topolniak – 2024

This work addresses the critical need for multifunctional materials and substrate-independent high-precision surface modification techniques that are essential for advancing microdevices and sensing elements. To overcome existing limitations, the versatility of mussel-inspired materials (MIMs) is combined with state-of-the-art multiphoton direct laser writing (DLW) microfabrication. In this way, 2D and 3D MIM microstructures of complex designs are demonstrated with sub-micron to micron resolution and extensive post-functionalization capabilities. This study includes polydopamine (PDA), mussel-inspired linear, and dendritic polyglycerols (MI-lPG and MI-dPG), allowing their direct microstructure on the substrate of choice with the option to tailor the patterned topography and morphology in a controllable manner. The functionality potential of MIMs is demonstrated by successfully immobilizing and detecting single-stranded DNA on MIM micropattern and nanoarray surfaces. In addition, easy modification of MIM microstructure with silver nanoparticles without the need of any reducing agent is shown. The methodology developed here enables the integration of MIMs in advanced applications where precise surface functionalization is essential.

Title
656. 2D and 3D Micropatterning of Mussel-Inspired Functional Materials by Direct Laser Writing
Author
Z. Tavasolyzadeh, P. Tang, M. B. Hahn, G. Hweidi, N. Nordholt, R. Haag, H. Sturm, I. Topolniak
Date
2024
Identifier
DOI: 10.1002/smll.202309394
Source(s)
Citation
Small, 2024, 20, 2309394
Type
Text