STEM与日常科技·英语30篇（1）

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‘5纳米芯片’中的纳米究竟指什么？

The 'nanometer' number in chip specs refers to the smallest feature size engineers can etch onto silicon.
Smaller numbers mean transistors are packed more densely on the same chip area.
A 5-nanometer process allows billions of transistors to fit inside a smartphone chip.
This miniaturization improves speed, reduces power use, and lowers heat generation.
But it doesn’t mean every part of the chip is exactly five nanometers wide.
Real-world performance also depends on architecture, materials, and software optimization.
Manufacturing at this scale requires extreme precision and ultra-clean environments.
Even tiny defects can ruin entire batches of these advanced chips.
Moore’s Law describes this trend, though physical limits are now slowing progress.
Engineers continue exploring new materials like gallium nitride to push beyond silicon limits.