In 2004 Corso et al.
University of Zurich
, Switzerland, published
the discovery of a new inorganic nanostructured two dimensional material, called nanomesh [Science 303, 217 (2004)]
composed of single sheet of hexagonal boron nitride (h
-BN) with a honeycomb structure. This sheet
corrugates into a highly regular mesh during a high-temperature exposure of the clean rhodium
The nanomesh consists of a 3 nm unit cell with "pores" and "wires". The pores are regions
with a close contact between the BN and rhodium while the wires are lifted by about 0.1 nm.
The nanomesh forms in a self-assembly
process, i.e. the organisation of the atoms is driven by the Nature itself
without any human intervention. The super-structure forms due to close but different periodicities
nanomesh and the
substrate and a
site-dependent BN-Rh bond energy.
The boron nitride
is stable in air, vacuum and liquids. In vacuum it does not decompose up to temperatures of at least
C (1070 K). The BN
nanomesh can serve as a template to assemble molecules and clusters. These
characteristics promise interesting applications in areas like