@virginiaheffernan @chaircrusher
Etching is etching, and that is what #picotechnology is all about!
Here’s the cobalt ion at the heart of #vitaminB12 discussed in the #Nature essay
, where the ‘blue trumpets’ (‘holes’ in the charge cloud) reveal that the atom has been ‘etched’ by quantum forces in a way that will make chemists think about ‘empty d-orbitals’.