Maltese cross (optics)

Maltese crosses in an image of polyamide-6,6 spherulites

In polymer physics, Maltese Cross is a set of four symmetrically disposed sectors of high extinction that is displayed when a polymer is observed under polarized lights. This is usually observed when trying to observe spheruliltes in polymers.[1]

References

  1. ↑ Grant, Julius (1969). Chemical Dictionary. p. 630. spherulite. A spherical aggregation of outward radiating fibers, as from a solidifying polymer melt; gives a maltese cross in polarized light.
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