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Hardness in arthropod exoskeletons in the absence of transition metals

Paper ID Volume ID Publish Year Pages File Format Full-Text
2279 107 2010 5 PDF Available
Title
Hardness in arthropod exoskeletons in the absence of transition metals
Abstract

The arthropod cuticle is a remarkable and versatile biological material commonly composed of chitin and proteins. Lessons can be learned from the way it is adapted to fit its functions. The larval jewel beetle, Pseudotaenia frenchi, demonstrates hardness in the cutting edge of the mandibles in excess of the mineralized carapace of stone crabs and compares favourably with some stainless steels. Yet this is a form of cuticle which is devoid of transition metals or mineralization. In seeming contradiction, the similarly dark coloured adult beetle mandibles contain the transition metal manganese, but are significantly softer. Energy dispersive X-ray analysis and infrared spectroscopy have been used to investigate the differences in composition of mandible cuticle of the adult and larval beetles.

Keywords
Insect; Arthropod; Cuticle; Nanoindentation; Fourier transform infrared spectroscopy
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 6, Issue 8, August 2010, Pages 3152–3156
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
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100% Money Back Guarantee
Full-text PDF Download
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