Scale can weigh a proton

Ricci’s sensor can achieve ~1% accuracy. 1 goal for such precise sensors is to create high-resolution images of individual proteins and other molecules. Bachtold is developing similar sensors made of carbon nanotubes. You could place a single molecule in a magnetic field, which rotates the molecule’s constituent atoms. Because distinct elements rotate at different rates, a nearby force sensor could detect the rate of rotation of the atoms to identify them.

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