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Title: Sucker rings from the humboldt squid Dosidicus gigas : the role of nanotubule architecture on the mechanical properties
Authors: Miserez, Ali
Kisailus, David
Birkedal, Henrik
Weaver, James C.
Keywords: DRNTU::Engineering::Materials
Issue Date: 2009
Source: Miserez, A., Weaver, J. C., Kisailus, D., & Birkedal, H. (2009). Sucker rings from the humboldt squid Dosidicus gigas : the role of nanotubule architecture on the mechanical properties. Materials Research Society Symposium Proceedings, MRS Spring meeting 2009, 1187-KK02-04.
Abstract: The suckers that line the arms and tentacles of squid are equipped with rigid toothed ringlike elements that increase the gripping power during prey capture and handling. The sucker rings of the Humboldt squid Dosidicus gigas, are fully proteinaceous and contain nanotubules with diameters ranging from 100 to 250 nm. It has been shown previously that the ensuing porosity is a prime determinant of the local elastic modulus [A. Miserez et al., Adv. Mater. 21, 401 (2009)]. Here additional nanoindentation data are presented together with structural analyses. The nanomechanical data support our model that the measured modulus is determined by the local porosity. The dry moduli reach ca. 8 GPa and are reduced about two-fold in the hydrated state. This surprisingly small reduction is discussed in relation to possible chemistries responsible for assembly of these structures.
Rights: © 2009 Materials Research Society. This paper was published in Materials Research Society Symposium Proceedings and is made available as an electronic reprint (preprint) with permission of Materials Research Society. The paper can be found at the following DOI: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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