Naked molecules

A new approach to observing polymers under the electron microscope by trapping them in a graphene pocket could make it possible to study proteins and DNA without staining for microscopy. Scientists at the Institute for Basic Science, in Daejeon, Korea, suggest the approach could be used to look at dynamic behavior of many biological molecules that is usually inaccessible to conventional techniques. The approach sidesteps the problem of the electron beam simply destroying a liquid sample before it can be visualized by holding the moving polymer chains within 3 to 5 graphene layers that form a pocket that protects them long enough from the electrons' destructive energy that they can be seen.