The simple-seeming process of exfoliation has allowed materials scientists to shave an unusual class of ionic solids down to two-dimensional layers of electrides. These highly conductive nanosheets might find applications in electronics and chemical synthesis. Electrides are layered ionic solids in which atomic planes are separated by delocalized electron sheets. They are often referred to as a "2D electron gas" and have electrical conductivity higher than that other famous 2D material graphene.
Exfoliation for materials scientists