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One Graphene Device Makes Three Amplifiers

Logic device could be even more multipurpose

3 min read
One Graphene Device Makes Three Amplifiers


Illustration: Bryan Christie Design
Power of Three: This simple graphene circuit makes three amplifiers.

Graphene devices are showing amazing flexibility, and not just the mechanical kind. Researchers at Rice University and the University of California, Riverside, recently demonstrated an amplifier, based on a single graphene transistor, that can do the job of three different amplifiers. The device could lead to smaller, lower-power analog circuits, such as Bluetooth radios, they say. Separately, scientists at IBM are developing a type of graphene device that can be reconfigured, on the fly, into six different logic gates. Despite this, engineers agree that practical graphene logic is many years away.

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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

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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