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2 article(s) from Konrad, Wilfried

Straight roads into nowhere – obvious and not-so-obvious biological models for ferrophobic surfaces

Wilfried Konrad,
Christoph Neinhuis and
Anita Roth-Nebelsick

Beilstein J. Nanotechnol. 2022, 13, 1345–1360, doi:10.3762/bjnano.13.111

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Figure 1: Left: Scheme of a typical blast furnace (picture from OpenStax, Blast Furnace Reactions, CC BY 4.0)...

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Figure 2: (a) A leaf of Salvinia molesta (Kariba weed) from above. The inset (b) shows the eggbeater-like str...

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Figure 3: The skin structures of Collembola (springtails) show several levels of protection against wetting: ...

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Figure 4: Basic structure of the xylem, the water transport tissue of plants. The xylem consists of elongated...

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Figure 5: Left: Closely arranged “ice cream cones” on the surfaces of tuyères that contain gas pockets are ab...

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Figure 6: The two test objects before (a, c) and after (b, d) testing. (a, b) Unmodified copper plate, (c,d) ...

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Figure 7: Sketch of the project progress. Initially, two biological models showing highly water-repellent sur...

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Figure 8: Illustration of the Young–Laplace equation. Left: The interface is given by the equation z = u(x,y)...

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Figure 9: Mechanical stability of a gas/liquid interface. Left: After being deflected from its equilibrium po...

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Perspective

Published 17 Nov 2022

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Sorting of droplets by migration on structured surfaces

Wilfried Konrad and
Anita Roth-Nebelsick

Beilstein J. Nanotechnol. 2011, 2, 215–221, doi:10.3762/bjnano.2.25

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Figure 1: Sphere like droplets of fluid #1 (grey) attached to an axially symmetric solid cone (the broken lin...

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Figure 2: Thin lines: Curves of constant surface formation energy W (ε, θ) of an equilibrated droplet of volu...

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Figure 3: Surface formation energy W (ε, θ) of an equilibrated droplet of volume V. Values of W are given as ...

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Figure 4: Line-up of cones. The apex half-angle ε increases from left to right. For θ = const. and 0° < θ < 9...

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Figure 5: Double line-up of cones similar to a zip fastener constructed from the left part of Figure 4. The apex half...

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Full Research Paper

Published 20 Apr 2011

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