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  • BBC Science Focus Magazine

    Tiny chips use ultrasound to monitor your body… from the inside

    Jun 30, 2021 4 minutes
    PROF KEN SHEPARD

    Electrical and biomedical engineer

    WHAT’S THE BACKGROUND TO THIS RESEARCH?

    Moore’s Law states that you can cram more and more transistors into a certain area on an integrated circuit chip. And that number’s been growing exponentially for the last 30 or 40 years. It’s primarily been used not to make the chips smaller, but to put more transistors on a chip that’s the same size. So, we’ve gone from chips with a thousand transistors to chips with tens of billions. But another thing you could do with that density is use it to make chips that are very, very small.

    HOW SMALL ARE WE TALKING?

    So this is the smallest autonomous single chip system

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