When compounds of bromine or chlorine (represented in blue) are introduced into a block of graphite (shown in green), the atoms find their way into the structure in between every third sheet, thus increasing the spacing between those sheets and making it
Chih-Jen Shih / Christine Daniloff
Graphene, a form of pure carbon arranged in a lattice just one atom thick, has interested countless researchers with its unique strength and its electrical and thermal conductivity. But one key property it lacks—which would make it suitable for a plethora of new uses—is the ability to form a band gap, needed for devices such as transistors, computer chips, and solar cells.
From MIT News Office
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