: PEEK is famously tough, but its "amorphous" (non-crystalline) state is tricky to model. This paper provides a rare, deep look at the atomic level of why it's so resilient.
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You can also explore more specific categories like or Biomechanics to find something closer to your specific interest. The Work of Art in the Age of Mechanical Reproduction - MIT : PEEK is famously tough, but its "amorphous"