The Stomatopod Dactyl Club: A Formidable Damage-Tolerant Biological Hammer

Author:

Weaver James C.1,Milliron Garrett W.2,Miserez Ali3,Evans-Lutterodt Kenneth4,Herrera Steven2,Gallana Isaias5,Mershon William J.6,Swanson Brook7,Zavattieri Pablo5,DiMasi Elaine4,Kisailus David2

Affiliation:

1. Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 01238, USA.

2. Department of Chemical and Environmental Engineering, University of California, Riverside, Riverside, CA 92521, USA.

3. School of Materials Science and Engineering and School of Biological Sciences, Nanyang Technological University, Singapore 639798.

4. National Synchrotron Light Source, Brookhaven National Laboratory, Upton, NY 11973, USA.

5. College of Engineering, Purdue University, West Lafayette, IN 47907, USA.

6. Tescan-USA, Cranberry Township, PA 16066, USA.

7. Biology Department, Gonzaga University, Spokane, WA 99258, USA.

Abstract

Hammering Home the Lesson Stomatopods are marine crustaceans that use hammerlike claws for defense and to attack their prey. The claws undergo repeated high-velocity and high-force impacts. Weaver et al. (p. 1275 ; see the Perspective by Tanner ) used a variety of techniques to examine the structure, mechanical behavior, and toughening mechanisms of the claw of the Peacock Mantis shrimp. The claw's composite structure is optimized for toughness, which helps to prevent the complete failure that might arise from the claw's repetitive hammering.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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