hexagonal boron nitride


Also found in: Acronyms.

hexagonal boron nitride

[hek¦sag·ən·əl ‚bȯr·än ′nī‚trīd]
(materials)
A synthetic material composed of boron and nitrogen with the atoms combined in a hexagonal lattice such that it has a structure similar to graphite. Also known as white graphite.
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Two-dimensional materials are at the focus of interest, in particular graphene but also two-dimensional niobium diselenide, molybdenum disulfide, hexagonal boron nitride, mono-layer bismuth strontium calcium copper oxide, and a variety of other layered materials.
The researchers discovered that a very tiny amount of hexagonal boron nitride (h-BN) particles, two-dimensional cousins to carbon-based graphene, suspended in standard transformer oils are highly efficient at removing heat from a system.
The group analyzed a monolayer hexagonal boron nitride sample prepared at Oxford University and was able to find and identify three types of atomic substitutions - carbon atoms substituting for boron, carbon substituting for nitrogen and oxygen substituting for nitrogen.
CBN is produced by taking hexagonal boron nitride, and placing it under very high pressure and temperature which transforms it into a cubic structure.