The AngströmSphere line of micron-sized amorphous silica are spherical fillers used in high-performance plastics, nanocomposites, and dental composites. They can also be added to films as antislip additives or be used as a chemical mechanical polishing agent. They come in sizes ranging from 0.05 to 2 m with particle-size distributions of <10% and a purity of >99.9%. Custom sizes and surface modifications are also available.

Fiber Optic Center Inc., 23 Centre St., New Bedford, MA 02740, (800) 473-4237,