A silicon wafer with chips etched into is seen at a site where Applied Materials plans to build a research facility, in Sunnyvale, California, U.S., May 22, 2023. Jim Wilson/Pool via REUTERS/File Photo Purchase Licensing Rights, opens new tabSummaryCompaniesSubstrate aims to reduce US chipmaking costsSubstrate's tool uses X-ray lithography for advanced chipmakingSubstrate has raised $100 million, valued at over $1 billionSAN FRANCISCO, Oct 28 (Reuters) - Substrate, a small U.S. startup, said on ...