  In this paper it is shown how one can use Bessel beams to obtain a stationary
localized wavefield with high transverse localization, and whose longitudinal
intensity pattern can assume any desired shape within a chosen interval 0 < z <
L of the propagation axis. This intensity envelope remains static, i.e., with
velocity v=0; and because of this we call "Frozen Waves" such news solutions to
the wave equations (and, in particular, to the Maxwell equations). These
solutions can be used in many different and interesting applications, as
optical tweezers, atom guides, optical or acoustic bistouries, various
important medical purposes, etc.
