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Cocoon of the silkworm Antheraea pernyi as an example of a thermally insulating biological interface.

Jin,X, Zhang,J, Gao,W, Li,J and Wang,X 2014, Cocoon of the silkworm Antheraea pernyi as an example of a thermally insulating biological interface., Biointerphases, vol. 9, no. 3, pp. 031013-1-031013-11, doi: 10.1116/1.4890982.

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Title Cocoon of the silkworm Antheraea pernyi as an example of a thermally insulating biological interface.
Author(s) Jin,X
Zhang,JORCID iD for Zhang,J orcid.org/0000-0002-4257-8148
Gao,W
Li,JORCID iD for Li,J orcid.org/0000-0003-0709-2246
Wang,X
Journal name Biointerphases
Volume number 9
Issue number 3
Start page 031013-1
End page 031013-11
Total pages 12
Publisher AIP Publishing
Place of publication College Park, Md. U.S.
Publication date 2014-07-24
ISSN 1559-4106
Keyword(s) Science & Technology
Life Sciences & Biomedicine
Technology
Biophysics
Materials Science, Biomaterials
Materials Science
MECHANICAL-PROPERTIES
BOMBYX-MORI
LAYERED COMPOSITES
WAVE PROPAGATION
SILKMOTH
BEHAVIOR
HEAT
Summary Biological materials are hierarchically organized complex composites, which embrace multiple practical functionalities. As an example, the wild silkworm cocoon provides multiple protective functions against environmental and physical hazards, promoting the survival chance of moth pupae that resides inside. In the present investigation, the microstructure and thermal property of the Chinese tussah silkworm (Antheraea pernyi) cocoon in both warm and cold environments under windy conditions have been studied by experimental and numerical methods. A new computational fluid dynamics model has been developed according to the original fibrous structure of the Antheraea pernyi cocoon to simulate the unique heat transfer process through the cocoon wall. The structure of the Antheraea pernyi cocoon wall can promote the disorderness of the interior air, which increases the wind resistance by stopping most of the air flowing into the cocoon. The Antheraea pernyi cocoon is wind-proof due to the mineral crystals deposited on the outer layer surface and its hierarchical structure with low porosity and high tortuosity. The research findings have important implications to enhancing the thermal function of biomimetic protective textiles and clothing.
Language eng
DOI 10.1116/1.4890982
Field of Research 091202 Composite and Hybrid Materials
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Grant ID DP120100139
Copyright notice ©2014, AIP Publishing
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30068769

Document type: Journal Article
Collections: Institute for Frontier Materials
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.