<p>➀ A secretive American startup named Substrate has emerged with the aim of challenging ASML and TSMC in the semiconductor industry.</p><p>➁ Substrate has developed a new chipmaking machine that uses particle acceleration for lithography, a crucial process for etching microscopic circuitry onto silicon wafers.</p><p>➂ The company aims to compete with ASML, whose equipment is currently the only option for making advanced processors.</p>