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Fig. 3 Switchable adhesion influenced by structural design and object conductivity. Switchable adhesion influenced by structural design and object conductivity.

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Presentation on theme: "Fig. 3 Switchable adhesion influenced by structural design and object conductivity. Switchable adhesion influenced by structural design and object conductivity."— Presentation transcript:

1 Fig. 3 Switchable adhesion influenced by structural design and object conductivity.
Switchable adhesion influenced by structural design and object conductivity. (A) Adhesion on/off ratio (ratio of pull-off force with an external voltage to that without voltage) of Al2O3-CNT SNE with different Al2O3 coating thicknesses (approximately 0.2, 1, and 10 nm) and different fiber densities (sparse and dense). (B) AFM images (top) images of CNTs coated with Al2O3 via ALD with 10 (left) and 50 (right) deposition cycles, respectively, and SEM images (bottom) of SNE top surfaces with different densities. (C) Pull-off forces against a conductive (Pt-coated; ~4 μm diameter) and a nonconductive (uncoated SiO2; ~10 μm diameter) spherical tip. (D) Schematics of polarization of conductive and dielectric objects when the SNE is in contact with the external voltage on. 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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