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SUMMARY:From three-dimensional weavings to swollen corneocytes - Ms Myfanw
 y Evans\, Australian National University
DTSTART:20110429T133000Z
DTEND:20110429T143000Z
UID:TALK30921@talks.cam.ac.uk
CONTACT:Ms Helen Gardner
DESCRIPTION:I will describe a novel technique to generate three-dimensiona
 l Euclidean weavings\, composed of close-packed\, periodic arrays of one-d
 imensional fibres. Some of these weavings are shown to dilate by simple sh
 ape changes of the constituent fibres (such as fibre straightening). The f
 ree volume within a particular chiral cubic example of a dilatant weaving 
 expands more than fivefold on filament straightening. This remarkable thre
 e-dimensional weaving\, therefore\, allows an unprecedented variation of p
 acking density without loss of structural rigidity and is an attractive de
 sign target for materials. It is proposed that this particular weaving is 
 formed by keratin fibres in the outermost layer of mammalian skin\, probab
 ly templated by a folded membrane.
LOCATION:Oatley Seminar Room\, Department of Engineering
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