for use as a fuel form for nuclear reactors and nuclear thermal rockets. As nanostructured cermet, this material is used in the optical field, such as solar absorbers/selective surface. Thanks to the size of the particles (~5 nm), surface plasmons on the metallic particles are generated and enable the heat transmission. For reasons regarding luxury, cermet is sometimes found to be case materials for some watches, including Jaeger-LeCoultre's Deep Sea Chronograph Vintage Cermet watch. It was also used (November 2019) on the bezel of the flagship diver Seiko Prospex LX Line Limited Edition watch. See also Glidcop Nuclear fuel Nuclear fuel cycle Notes Further reading External links A Review of Fifty Years of Space Nuclear Fuel Development Programs (broken) Composite materials