All lessons
wafers
2 free lessons tagged wafers across History, Science. Each one is a short sequence of focused steps with narration and a five-question quiz at the end — take them in any order, no signup required.
History
advancedEquipment and materials: the secondary chokepoints
Beyond lithography, a fab depends on etch, deposition, implantation, metrology, photoresist, wafers, and specialty gases. Each of these markets concentrated independently, and most show the same compounding-R&D pattern as lithography at smaller scale.
8 steps·~12 min
Science
intermediateChip fabrication: wafer to working device
How a near-perfect silicon ingot becomes a billion-transistor chip. The 600-step fab cycle, photolithography down to 13.5 nm EUV (vaporized tin droplets at 220,000 °C), ion implantation for doping, the truth behind '5 nm' node naming, and the chokepoint-heavy global supply chain.
8 steps·~12 min