In our clean room facility, fused silica nano-droplets, of the highest purity, are formed by hydrolysis of silicon tetrachloride (SiCl4) inside a hydrogen-oxygen torch. These nanoparticles are deposited using multiple torches onto a rotating bait tube. This hours-long deposition process results in a chalk-like, nanoporous silica body (known as a soot body).

The soot body can be dried in a dehydration furnace to remove hydroxyl groups created during the deposition process. Subsequently it is consolidated into a transparent glass body by means of a large sintering furnace.