Ghost Imaging with Electrons

The expression “ghost imaging” might conjure up blurry photos of ghoulish visitors, but it’s actually a sophisticated approach to imaging objects that may not be suited to conventional imaging methods. To date, ghost imaging has employed visible light, x rays, and even helium atoms as illumination sources. And now, researchers have demonstrated a ghost-imaging setup for electrons. Compared to standard electron imaging, this approach can reduce the acquisition time and the radiation dose on the sample—an asset for samples easily damaged by radiation, like biomolecules.