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Silicon Carbide Logic Circuits Work at Blistering Temperatures

Logic circuits that thrive at 550 °C could simplify jet engines, spacecraft, and more

3 min read
silicon carbide logic circuit
Image: Case Western Reserve University

21 November 2012—Researchers at Case Western Reserve University have pushed heat-resistant integrated logic circuits to a record 550 °C, a notch hotter than in NASA’s tests of integrated circuits.  

Conventional silicon circuits break down beyond 350 °C, but the ability to get sensor information from high-temperature environments, such as inside a jet engine or in a deep oil well, could improve efficiency and save millions of dollars—not to mention provide capabilities for space missions to extreme locations like Venus. Research into silicon carbide logic ICs could move signal processing and control closer to the point of sensing, thereby removing the need for long wires, which could fail, or cooling contraptions, which complicate systems.

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The Transistor at 75

The past, present, and future of the modern world’s most important invention

1 min read
A photo of a birthday cake with 75 written on it.
Lisa Sheehan
LightGreen

Seventy-five years is a long time. It’s so long that most of us don’t remember a time before the transistor, and long enough for many engineers to have devoted entire careers to its use and development. In honor of this most important of technological achievements, this issue’s package of articles explores the transistor’s historical journey and potential future.

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