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SUMMARY:Twisted topological tangles: or the knot theory of knitting - Elis
 abetta Matsumoto (Georgia Institute of Technology)
DTSTART:20190514T131000Z
DTEND:20190514T135000Z
UID:TALK124402@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Shashank Markande\, Michael Dimitriyev\, Krishman Singal and E
 lisabetta Matsumoto  Imagine a 1D curve\, then use it to fill a 2D manifol
 d that covers an arbitrary 3D object &ndash\; this computationally intensi
 ve materials challenge has been realized in the ancient technology known a
 s knitting. This process for making functional materials 2D materials from
  1D portable cloth dates back to prehistory\, with the oldest known exampl
 es dating from the 11th century BCE. Knitted textiles are ubiquitous as th
 ey are easy and cheap to create\, lightweight\, portable\, flexible and st
 retchy. As with many functional materials\, the key to knitting&rsquo\;s e
 xtraordinary properties lies in its microstructure.  At the 1D level\, kni
 ts are composed of an interlocking series of slip knots. At the most basic
  level there is only one manipulation that creates a knitted stitch &ndash
 \; pulling a loop of yarn through another loop. However\, there exist hund
 reds of books with thousands of patterns of stitches with seemingly unboun
 ded complexity.  The topology of knitted stitches has a profound impact on
  the geometry and elasticity of the resulting fabric. This puts a new spin
  on additive manufacturing &ndash\; not only can stitch pattern control th
 e local and global geometry of a textile\, but the creation process encode
 s mechanical properties within the material itself. Unlike standard additi
 ve manufacturing techniques\, the innate properties of the yarn and the st
 itch microstructure has a direct effect on the global geometric and mechan
 ical outcome of knitted fabrics. 
LOCATION:Seminar Room 1\, Newton Institute
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