The ultrathin topological insulator sodium bismuthide (Na 3 Bi) can switch to being a conventional insulator when an electric field is applied. This “off-on” effect, discovered by researchers in ...
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What Is a Transistor, and How Does It Work?
Transistors are tiny electronic components that act as switches and amplifiers, and they dwell at the heart of modern technology. In simple terms, a transistor can turn a flow of electricity on or off ...
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