3 ms·
I wonder if the hard part is interfacing the sapphire with the silicon, heterogeneous materials like that are always an issue
by raverbashing 3y ago
I wonder if the hard part is interfacing the sapphire with the silicon, heterogeneous materials like that are always an issue
- bsder 3y agoIn 1977, everything was hard. Growing just silicon crystals was still difficult let alone on sapphire--3 ionch wafers were the norm. Lithography was contact so degrade your masks over time. Threshold voltages had poor control. CMOS chips were very susceptible to ESD punchthrough. Latchup was murderous (SOS helps cut this down greatly). You had purple plague. I can go on and on.
- kragen 3y agointerestingly, the day after you posted this, popular youtuber nilered published a video in which, after staggering amounts of effort, he successfully makes a beautiful finger ring for himself from purple plague https://www.youtube.com/watch?v=d6Pcp944sRI https://www.youtube.com/watch?v=d6Pcp944sRI