Substrate is a scam; their marketing is misleading and they have yet to answer to the fundamental reason why X-ray and e-beam failed over 40 years ago (despite it being generally agreed they were the future of litho and optical would soon be dead): writing one line at a time is extremely slow compared to optical which can scan a whole reticle in a fraction of a second.
E-beam is still used for making DUV/EUV masks where the low write speed can be tolerated but no one in the industry thinks it will replace EUV in the silicon litho steps any time soon.
But lay people eat this crap up and journalists turn a blind eye either because they're literally paid PRC shills or because clicks are everything now a days.
E-beam is still used for making DUV/EUV masks where the low write speed can be tolerated but no one in the industry thinks it will replace EUV in the silicon litho steps any time soon.
But lay people eat this crap up and journalists turn a blind eye either because they're literally paid PRC shills or because clicks are everything now a days.