Fused silica is characterized, among other things, by its high chemical purity, temperature resistance, and light transmission from the ultraviolet to the infrared range. The two business units Heraeus Conamic and Heraeus Comvance produce the material. While natural quartz glass is still produced quite simply by melting sand, fused silica is produced by burning and separating condensate from a gaseous intermediate product. This enables particularly high purity.
Heraeus Comvance is the specialist for high-speed Internet. Its fused silica cylinders are the basis for the fiber optic expansion of the global data network. Small incisions, short operation times, and fast recovery are the advantages of minimally invasive laser surgery. Heraeus Conamic supplies the raw material for the appropriate fused silica fibers to guide the laser into the body. The Global Business Unit also ensures that semiconductors for today's all-important microchips function properly. Process tubes made of fused silica ensure that the critical coating process for semiconductors runs optimally.
Another important field, not just since the Corona pandemic, is the UV disinfection of water or air. Fused silica for high-purity lamp tubes from Heraeus Conamic enables UV solutions from the Global Business Unit Heraeus Noblelight to reliably kill bacteria or viruses.
Fused silica for space exploration is a high-altitude product. Since the Apollo 11 mission in 1969, for example, a laser reflector with 100 quartz glass prisms has been on the moon, which can still be used today to reliably measure the distance between the earth and the moon.