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Moore's Law: Scientists Just Made a Graphene Transistor Gate the Width of an Atom


A sidewall transistor with a graphene gate.

The research demonstrates a clever way to exploit the most desirable properties of two-dimensional materials in chips.

Credit: Wu, F., Tian, H., Shen, Y. et al.

There's been no greater act of magic in technology than the sleight of hand performed by Moore's Law. Electronic components that once fit in your palm have long gone atomic, vanishing from our world to take up residence in the quantum realm.

But we're now brushing the bitter limits of this trend. In a paper published in Nature this week, scientists at Tsinghua University in Shanghai wrote that they've built a graphene transistor gate with a length of 0.34 nanometers (nm)—or roughly the size of a single carbon atom.

The gate, a chip component that switches transistors on and off, is a critical measure of transistor size. Previous research had already pushed gate lengths to one nanometer and below. By scaling gate lengths down to the size of single atoms, the latest work sets a new mark that'll be hard to beat. "In the future, it will be almost impossible for people to make a gate length smaller than 0.34 nm," the paper's senior author Tian-Ling Ren told IEEE Spectrum. "This could be the last node for Moore's Law."

From SingularityHub
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