The Plastic Processor

Europeans announce the first organic microprocessor

3 min read

Take a bow, flexible chip. This week at the International Solid-State Circuits Conference, in San Francisco, European researchers will introduce the world’s first microprocessor made with organic semiconductors. The 4000-transistor, 8-bit logic circuit has the processing power of only a 1970s-era silicon model, but it has a key advantage—it can bend. The device’s designers say the chip could lead the way to cheaper flexible displays and sensors. Wrapped around pipes, for example, sheets of sensors with these processors could record average water pressure, and wrapped around food and pharmaceuticals, they might indicate that your tuna is rancid or that you forgot to take your pills.

The key to the chip’s design was taming the somewhat unruly organic transistor, says Jan Genoe, a polymer and molecular electronics researcher at Belgian nanotech research center Imec, in Leuven, who led the research with colleague Kris Myny. One advantage silicon has over organics is its monocrystalline structure, which allows for well-behaved switches. If you increase the transistor gate’s voltage above a known threshold, the current turns on. But today’s organic transistors—which swap silicon for a polymer—are unpredictable. Each one can have a slightly different switching threshold.

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The Transistor of 2047: Expert Predictions

What will the device be like on its 100th anniversary?

4 min read
Six men and a woman smiling.

The luminaries who dared predict the future of the transistor for IEEE Spectrum include: [clockwise from left] Gabriel Loh, Sri Samavedam, Sayeef Salahuddin, Richard Schultz, Suman Datta, Tsu-Jae King Liu, and H.-S. Philip Wong.

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The 100th anniversary of the invention of the transistor will happen in 2047. What will transistors be like then? Will they even be the critical computing element they are today? IEEE Spectrum asked experts from around the world for their predictions.

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