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Materials Horizons Vol -4

Materials Horizons Vol - 4 Issue - 3

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An introduction to ratchets in chemistry and biology

Improving photoanodes to obtain highly efficient dye-sensitized solar cells: a brief review

Metal organic framework based catalysts for CO₂ conversion

The same and not the same: molecular perovskites and their solid-state analogues

Modular assembly of soft deployable structures and robots

Toughness-enhancing metastructure in the recluse spider's looped ribbon silk

Highly sensitive airflow sensors with an ultrathin reduced graphene oxide film inspired by gas exfoliation of graphite oxide

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Porous polymeric materials by 3D printing of photocurable resin

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Materials Horizons Vol - 4 Issue - 2

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Materials Horizons Vol -2

Materials Horizons Vol -1

Toughness-enhancing metastructure in the recluse spider's looped ribbon silk

Content Provider	Royal Society of Chemistry (RSC)
Author	Schniepp, H. C. Koebley, S. R. Vollrath, F.
Copyright Year	2017
Abstract	In nature's toughest materials, sacrificial bonds and hidden lengths play a key role in dissipating energy. Here, we show that the recluse spider (Loxosceles genus) spins its 50 nm-thin silk ribbons into sacrificial micro-loops, providing inspiration for the design of toughened uniaxial metamaterials. Previous attempts to incorporate sacrificial metastructure in cylindrical fibers have either failed to enhance toughness or required prohibitively complex manufacturing. In the recluse system, the loops of the ribbon-like strand are anchored by silk-to-silk bonds that do not compromise the fiber's ultimate strength upon release and require no additional adhesive. The silk's thin ribbon morphology facilitates the formation of these strong yet sacrificial bonds and reduces the risk of failure due to bending. Modeling and an experimental proof of concept are used to demonstrate that a looped ribbon metastructure can considerably enhance a material's toughness.
Starting Page	377
Ending Page	382
Page Count	6
File Format	HTM / HTML PDF
ISSN	20516347
Volume Number	4
Issue Number	3
Journal	Materials Horizons
DOI	10.1039/c6mh00473c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Spider silk Genus Recluse spider Metamaterial
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Electrical and Electronic Engineering Process Chemistry and Technology

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