Nanoscale Physics   What is a nanoscale system? The simplest and
most natural answer is that it is a structure with at least one
dimension at the nanometer scale. Nanoscale materials straddle
the border between the molecular and the macroscopic. They are
small enough to exhibit characteristics reminiscent of molecules
but large enough for their properties to be designed and
controlled to meet human needs. Physics at the nanometer scale
is vastly different from that of bulk materials mainly because
of: the enhanced role of surface atoms with their unpaired spins
and uncompensated bonds; the reduced dimensionality at the
nanoscale; and quantum confinement and/or coherence effects.
Additional motivation for this exciting area comes from the
numerous applications of nanoparticles and nanostructures in
magnetics and spintronics, photonics, electronics, catalysis,
and medicine.  Nanoscale Physics, which many regard also as a
branch of Condensed Matter Physics (CMP), has numerous examples
of collaborations between p