Nanotechnology is
the engineering and manufacturing
of materials at the atomic and
molecular scale. In its strictest
definition from the National
Nanotechnology Initiative,
nanotechnology refers to structures
roughly in the 1100 nm size regime
in at least one dimension. Despite this
size restriction, nanotechnology
commonly refers to structures that
are up to several hundred nanometers
in size and that are developed by topdown
or bottom-up engineering of
individual components. Herein, we
focus on the application of
nanotechnology to drug delivery and
highlight several areas of opportunity
where current and emerging
nanotechnologies could enable
entirely novel classes of therapeutics.