It’s called a ‘tungsten nanoneedle’, and if you make it right, its tip can shrink to a handful of atoms across. It’s the ultimate needle, the subtle knife that cuts a hole in the world, and it’s used in electron microscopes. Take a tungsten wire and electrolytically etch it in https://t.co/f5FIFIOZW3 #Tungsten #Nanotechnology #ElectronMicroscopy #Nospecificcountrycodesarementionedinthetweet.
