A team of scientists has, for the first time, created a two-dimensional sheet of boron -- a material known as borophene. It is an unusual material because it shows many metallic properties at the nanoscale even though three-dimensional, or bulk, boron is nonmetallic and semiconducting. No bulk form of elemental boron has this metal-like behavior. Borophene, both metallic and atomically thin, holds promise for possible applications ranging from electronics to photovoltaics.

Source: Scientists create atomically thin boron