The key material needed in both paint research and electronics was pure silicon.

"With the Russians, we're getting about four of them," or 99.99 percent pure silicon 28.

For other uses, other types of pure silicon which do not exist as single crystals may be employed.

Also, fairly pure silicon has a negative coefficient of thermal expansion for temperatures between about 18 and 120 kelvins.

On top of the oxide, a thin layer of semiconducting material, usually pure silicon.

Not to mention vast fields of the purest silicon for making the chips themselves.

It was to mine 200,000 tonnes a year of pure silicon.

At that time the price of pure silicon meant that it was worth $4,000 million to the Australian economy.

This seed crystal is dipped into the pure molten silicon and slowly extracted.

We cook up pure silicon, saw it into slices, and make patterns on its surface using tiny stencils and sprays of light.