Nomex Fiber

These fibers are ribbon shaped in cross-section as can be seen by the broad, uniform central retardation color shown by the three more horizontal fibers. The flattened fibers are about seven micrometers thick and are showing third and forth order colors. The fiber in the lower left is seen on edge.

Transmitted Crossed Circular Polarized Light

Definition/Function:

Nomex is an meta-Aramid fiber. It is known for its high temperature stability and is used as a heat-protection clothing fiber.

Significance in the Environment:

Characteristic Features:

Nomex has refractive indices o about 1.67 perpendicular and 1.89 parallel, giving a birefringence of 0.22. Only Kevlar has a higher birefringence among the synthetic fibers.

Associated Particles:

References:

Gorski, Azriel and Walter C. McCrone, "Birefringence of fibers", THE MICROSCOPE, vol. 46, no. 1, pp. 3-16

http://en.wikipedia.org/wiki/Nomex