Impedimetric sensor for salvinia layer detection on fluoropor-coated electrodes under shear stress

Kai Sachsenheimer; Fadoua Mayoussi; Andreas Goralczyk; Frederik Kotz; Dorothea Helmer; Pegah Pezeshkpour; Bastian E. Rapp

doi:10.1117/12.2578253

5 March 2021 Impedimetric sensor for salvinia layer detection on fluoropor-coated electrodes under shear stress

Kai Sachsenheimer, Fadoua Mayoussi, Andreas Goralczyk, Frederik Kotz, Dorothea Helmer, Pegah Pezeshkpour, Bastian E. Rapp

Author Affiliations +

Proceedings Volume 11637, Microfluidics, BioMEMS, and Medical Microsystems XIX; 116370G (2021) https://doi.org/10.1117/12.2578253
Event: SPIE BiOS, 2021, Online Only

Abstract

Superhydrophobic surfaces and coatings are of high interest for numerous applications. Inspired from the lotus effect in nature, where droplets easily slide off a surface, due to the formation of an air layer (Salvinia layer) between droplet and surface, superhydrophobic surfaces can be fabricated. For water-immersed structures, especially under dynamic conditions, the stabilization of the Salvinia layer on the superhydrophobic surfaces is of great importance. Due to the shear applied on such structures, the long-term stability of these surfaces necessitates precise measurement of the IDT electrode coated by a 50 μm Fluoropor layer, a transparent, fluorinated polymer foam. We measured Salvinia layer decomposition under low and high shear stress imposed in an aquatic flow cell. Moreover, the current sensor detects the degradation of Salvinia layer and regaining of that by pumping air when shear is applied.

Conference Presentation

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Kai Sachsenheimer, Fadoua Mayoussi, Andreas Goralczyk, Frederik Kotz, Dorothea Helmer, Pegah Pezeshkpour, and Bastian E. Rapp "Impedimetric sensor for salvinia layer detection on fluoropor-coated electrodes under shear stress", Proc. SPIE 11637, Microfluidics, BioMEMS, and Medical Microsystems XIX, 116370G (5 March 2021); https://doi.org/10.1117/12.2578253

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