The resulting images, grainy and almost ghostly ... This is because the X-ray signal produced by a single atom is incredibly weak. But today, the boundary between seeing and not seeing has shrunk ...

Many biologically important molecules change shape when stimulated by UV radiation. Although this property can also be found ...

Until now, the lowest acceptable sample required at least 10,000 atoms. This is because a single atom emits a signal that is too tiny to be detected by X-rays. As a result, X-rays were previously ...