In 2003 M. Corso et al.
University of Zurich
, Switzerland, published in
[M. Corso et al., Science 303, 217 (2004)]
the discovery of a new inorganic nanostructured two dimensional material, called nanomesh, which so far
has no analog in
systems composed of carbon
nanomesh is composed of boron (B)
, which form
a highly regular mesh after
high-temperature exposure of the clean rhodium
) single crystal
The nanomesh has a
-like superstructure (see figure) with apertures of 2nm
and wires of 1nm
In 2003 a double-layer model was proposed, where each BN
was offset in such a way as to expose a minimum metal surface area.
In 2007 an alternative model
emerged, which consists of a full single BN
layer (no more holes), where "pores" are
closer to the crystal surface than the wires.
The formation of the nanomesh is a self-assembly
i.e. the organisation of the atoms is driven by the nature itself without any human intervention.
process is likely driven due to close but
different periodicities (lattice constants
of the BN
nanomesh and the
substrate and a site dependent BN-bonding to the substrate.
The boron nitride
nanomesh is stable towards air, vacuum and liquids, and it does not
decompose up to temperatures of at least 796C (1070 K).
In addition the BN
nanomesh can serve as a template to organize molecules, as is exemplified by the
decoration of the mesh
These characteristics promise interesting applications of the nanomesh in areas like
and data storage media
like hard drives