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solid-state

3 articles

The Transistor

For most of the first half of the twentieth century, the active element of every electronic circuit was a glass-and-metal vacuum tube: a heated…

25 min read

Lithium-Ion and Beyond

The lithium-ion battery is the most important energy-storage technology of the twenty-first century. It powers the phones in our pockets, the laptops on our…

17 min read