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The synergy between the insect-inspired claws and adhesive pads increases the attachment ability on various rough surfaces

To attach reliably on various inclined rough surfaces, many insects have evolved both claws and adhesive pads on their feet. However, the interaction between these organs still remains unclear. Here we designed an artificial attachment device, which mimics the structure and function of claws and adh...

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Detalles Bibliográficos
Autores principales: Song, Yi, Dai, Zhendong, Wang, Zhouyi, Ji, Aihong, Gorb, Stanislav N.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4873747/
https://www.ncbi.nlm.nih.gov/pubmed/27198650
http://dx.doi.org/10.1038/srep26219
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author Song, Yi
Dai, Zhendong
Wang, Zhouyi
Ji, Aihong
Gorb, Stanislav N.
author_facet Song, Yi
Dai, Zhendong
Wang, Zhouyi
Ji, Aihong
Gorb, Stanislav N.
author_sort Song, Yi
collection PubMed
description To attach reliably on various inclined rough surfaces, many insects have evolved both claws and adhesive pads on their feet. However, the interaction between these organs still remains unclear. Here we designed an artificial attachment device, which mimics the structure and function of claws and adhesive pads, and tested it on stiff spheres of different dimensions. The results show that the attachment forces of claws decrease with an increase of the sphere radius. The forces may become very strong, when the sphere radius is smaller or comparable to the claw radius, because of the frictional self-lock. On the other hand, adhesive pads generate considerable adhesion on large sphere diameter due to large contact areas. The synergy effect between the claws and adhesive pads leads to much stronger attachment forces, if compared to the action of claw or adhesive pads independently (or even to the sum of both). The results carried out by our insect-inspired artificial attachment device clearly demonstrate why biological evolution employed two attachment organs working in concert. The results may greatly inspire the robot design, to obtain reliable attachment forces on various substrates.
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spelling pubmed-48737472016-06-02 The synergy between the insect-inspired claws and adhesive pads increases the attachment ability on various rough surfaces Song, Yi Dai, Zhendong Wang, Zhouyi Ji, Aihong Gorb, Stanislav N. Sci Rep Article To attach reliably on various inclined rough surfaces, many insects have evolved both claws and adhesive pads on their feet. However, the interaction between these organs still remains unclear. Here we designed an artificial attachment device, which mimics the structure and function of claws and adhesive pads, and tested it on stiff spheres of different dimensions. The results show that the attachment forces of claws decrease with an increase of the sphere radius. The forces may become very strong, when the sphere radius is smaller or comparable to the claw radius, because of the frictional self-lock. On the other hand, adhesive pads generate considerable adhesion on large sphere diameter due to large contact areas. The synergy effect between the claws and adhesive pads leads to much stronger attachment forces, if compared to the action of claw or adhesive pads independently (or even to the sum of both). The results carried out by our insect-inspired artificial attachment device clearly demonstrate why biological evolution employed two attachment organs working in concert. The results may greatly inspire the robot design, to obtain reliable attachment forces on various substrates. Nature Publishing Group 2016-05-20 /pmc/articles/PMC4873747/ /pubmed/27198650 http://dx.doi.org/10.1038/srep26219 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Song, Yi
Dai, Zhendong
Wang, Zhouyi
Ji, Aihong
Gorb, Stanislav N.
The synergy between the insect-inspired claws and adhesive pads increases the attachment ability on various rough surfaces
title The synergy between the insect-inspired claws and adhesive pads increases the attachment ability on various rough surfaces
title_full The synergy between the insect-inspired claws and adhesive pads increases the attachment ability on various rough surfaces
title_fullStr The synergy between the insect-inspired claws and adhesive pads increases the attachment ability on various rough surfaces
title_full_unstemmed The synergy between the insect-inspired claws and adhesive pads increases the attachment ability on various rough surfaces
title_short The synergy between the insect-inspired claws and adhesive pads increases the attachment ability on various rough surfaces
title_sort synergy between the insect-inspired claws and adhesive pads increases the attachment ability on various rough surfaces
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4873747/
https://www.ncbi.nlm.nih.gov/pubmed/27198650
http://dx.doi.org/10.1038/srep26219
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