| abstract |
Particles are encapsulated with a layer or sequence of layers. The particles can be flakes and the layers can form an optical interference stack for use as an optically variable pigment, among other purposes. In a particular embodiment a highly reflective metal layer is deposited around a glass flake with specular surfaces. The particles can be produced using a variety of deposition systems. In a particular embodiment, a downstream plasma-enhanced chemical vapor deposition system achieves high deposition rates while avoiding contamination of the plasma source with deposition products. |