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Fig. 2 Fibrous structure, roughness, and softness of SNE surface enabling switchable adhesion. Fibrous structure, roughness, and softness of SNE surface.

Published byΠαμφιλος Βιτάλη Modified over 5 years ago

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Presentation on theme: "Fig. 2 Fibrous structure, roughness, and softness of SNE surface enabling switchable adhesion. Fibrous structure, roughness, and softness of SNE surface."— Presentation transcript:

1 Fig. 2 Fibrous structure, roughness, and softness of SNE surface enabling switchable adhesion.
Fibrous structure, roughness, and softness of SNE surface enabling switchable adhesion. (A) An SEM image of SNE showing the top entangled surface and vertically aligned fibers underneath. (B) Schematics showing structural behavior of the top surface when a microsphere is compressed and retracted (left) and showing the van der Waals force that scales with few contacting nanofibers and electrostatic attraction that scales with all the nanofibers on the SNE surface (right). (C) AFM images of the top SNE surface composed of entangled Al2O3-coated CNT fibers. The root mean square roughness within the 100-μm2 area is ~35 nm. (D) Load displacement of Al2O3-coated surfaces with and without SNE, measured by nanoindentation using a ~10-μm-diameter sapphire tip. (E) Pull-off forces of Al2O3-coated surfaces with and without SNE measured by AFM using the ~4-μm-diameter Pt-coated spherical tip. (F) Attractive pressure at distances from the Al2O3-CNT SNE surface measured using the 1.2 mm by 1.2 mm Au-coated flat tip. Sanha Kim et al. Sci Adv 2019;5:eaax4790 Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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