A biorobotic adhesive disc for underwater hitchhiking inspired by the remora suckerfish.

Autor:	Wang Y; School of Mechanical Engineering and Automation, Beihang University, Beijing, China., Yang X; School of Mechanical Engineering and Automation, Beihang University, Beijing, China.; School of Biological Science and Medical Engineering, Beihang University, Beijing, China., Chen Y; John A. Paulson School of Engineering and Applied Sciences and Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, USA., Wainwright DK; Museum of Comparative Zoology, Harvard University, Cambridge, MA 02138, USA., Kenaley CP; Department of Biology, Boston College, Boston, MA 02215, USA., Gong Z; School of Mechanical Engineering and Automation, Beihang University, Beijing, China., Liu Z; School of Mechanical Engineering and Automation, Beihang University, Beijing, China., Liu H; School of Chemical Science and Engineering, Beihang University, Beijing, China., Guan J; School of Material Science and Engineering, Beihang University, Beijing, China., Wang T; School of Mechanical Engineering and Automation, Beihang University, Beijing, China., Weaver JC; John A. Paulson School of Engineering and Applied Sciences and Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, USA., Wood RJ; John A. Paulson School of Engineering and Applied Sciences and Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, USA. liwen@buaa.edu.cn rjwood@eecs.harvard.edu., Wen L; School of Mechanical Engineering and Automation, Beihang University, Beijing, China. liwen@buaa.edu.cn rjwood@eecs.harvard.edu.
Jazyk:	angličtina
Zdroj:	Science robotics [Sci Robot] 2017 Sep 20; Vol. 2 (10). Date of Electronic Publication: 2017 Sep 20.
DOI:	10.1126/scirobotics.aan8072
Abstrakt:	Remoras of the ray-finned fish family Echeneidae have the remarkable ability to attach to diverse marine animals using a highly modified dorsal fin that forms an adhesive disc, which enables hitchhiking on fast-swimming hosts despite high magnitudes of fluid shear. We present the design of a biologically analogous, multimaterial biomimetic remora disc based on detailed morphological and kinematic investigations of the slender sharksucker ( Echeneis naucrates ). We used multimaterial three-dimensional printing techniques to fabricate the main disc structure whose stiffness spans three orders of magnitude. To incorporate structures that mimic the functionality of the remora lamellae, we fabricated carbon fiber spinules (270 μ m base diameter) using laser machining techniques and attached them to soft actuator-controlled lamellae. Our biomimetic prototype can attach to different surfaces and generate considerable pull-off force-up to 340 times the weight of the disc prototype. The rigid spinules and soft material overlaying the lamellae engage with the surface when rotated, just like the discs of live remoras. The biomimetic kinematics result in significantly enhanced frictional forces across the disc on substrates of different roughness. Using our prototype, we have designed an underwater robot capable of strong adhesion and hitchhiking on a variety of surfaces (including smooth, rough, and compliant surfaces, as well as shark skin). Our results demonstrate that there is promise for the development of high-performance bioinspired robotic systems that may be used in a number of applications based on an understanding of the adhesive mechanisms used by remoras. (Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.)
Databáze:	MEDLINE
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