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#nanosheet

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01 ·Device Physics·★ MEMBER·9 min read From FinFET to GAA — Why the Transistor Had to Go Vertical Why did a flat transistor grow a fin, and then become a stack of thin slabs? With three tools — short-channel effects, DIBL, and the natural length — this piece shows that FinFET and GAA nanosheets were not a matter of taste but a corner physics painted the industry into. No prior knowledge assumed.