Berlin 2018 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 15: Postersession III
BP 15.92: Poster
Dienstag, 13. März 2018, 14:00–16:00, Poster B
Surface-Near Electrostatic Forces in Si-Chips guiding Self-Organisation of Polyelectric- and Biomaterials — •Daniela Täuber1, Susanne Pahlow1,2,5, Karina Weber1,2,5, Martin Müller3, Ilona Skorupa4, and Heidemarie Schmidt1,4 — 1Leibniz-Institut für Photonische Technologien, Albert-Einstein-Str. 9, D-07745 Jena — 2InfectoGnostics Forschungscampus Jena e.V., Philosophenweg 7, D-07743 Jena — 3Leibniz-Institut für Polymerforschung, PO: 120411, D-01005 Dresden — 4Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, D-01328 Dresden — 5Friedrich-Schiller-Universität, Institut für Physikalische Chemie und Abbe Center of Photonics, Helmholzweg 4, D-07743 Jena, Germany
The specific characterisation of biomaterials frequently requires adhesion or binding of the biological species of interest to matching species (antibodies, single DNA strands), which thus need to be well-organized on a substrate. The state-of-art here often requires the silanization of the substrate for providing covalent bonds to which the control species can be fixed by linkers.
Self-organization of the control species to a planar substrate by electrostatic adhesion via near surface electrostatic forces[1] is a very promising alternative approach. Here we report on self-organization of polyelectrolytes and biological species on silicon substrates with an implanted near surface electrostatic pattern. The physical adsorption of polyelectrolytes and biological species on such substrates is stable directly from solution and does not require silanization/a drying step.
[1] C. Baumgart, M. Helm, H. Schmidt, PRB, 80, 085305 (2009)