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Publication . Article . 2020

New Insights on the Control and Function of Octopus Suckers

Hosain Bagheri; Anna Hu; Sheldon Cummings; Cayla Roy; Rachel Casleton; Ashley Wan; Nicole Erjavic; +7 Authors
Open Access
English
Published: 05 Feb 2020 Journal: Advanced Intelligent Systems, volume 2, issue 6 (issn: 2640-4567, Copyright policy )
Publisher: Wiley
Abstract
Octopuses utilize their suckers for a myriad of functions such as chemo‐ and mechanosensing, exploring and manipulating objects, anchoring the body during crawling, and navigating through narrow passages. The sucker attachment mechanism grants the octopus the ability to perform many of these tasks. The goal of this study is to analyze sucker function and control through the assessment of pull‐off forces under different conditions. Sucker pull‐off forces are measured in Octopus bimaculoides (three females, seven males), when the arm is intact, amputated, and amputated with the suckers punctured. Greater sucker pull‐off forces are observed for amputated arms, plausibly indicating that the brain and/or the interbrachial commissure are responsible for triggering early sucker detachment in the intact animal. In addition, after piercing and compromising the sucker cavity, pull‐off force significantly decreases, indicating that the primary mechanism for sucker attachment is suction, and is less dependent on adhesion. These results provide new insights into the control and function of octopus suckers that can be integrated into the design and development of soft robot arms for aquatic applications.
Subjects by Vocabulary

Library of Congress Subject Headings: lcsh:Computer engineering. Computer hardware lcsh:TK7885-7895 lcsh:Control engineering systems. Automatic machinery (General) lcsh:TJ212-225

Medical Subject Headings: parasitic diseases

Microsoft Academic Graph classification: Suction (medicine) Octopus biology.animal biology Computer science Anatomy Soft robotics

Subjects

adhesion, centralized control, distributed control, soft robotics, suction, General Economics, Econometrics and Finance

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