  Making use of the equivalence between paraxial wave equation and
two-dimensional Schr\"odinger equation, Gaussian beams of monochromatic light,
possessing knotted nodal structures are obtained in an analytical way. These
beams belong to the wide class of paraxial beams called the
Hypergeometric-Gaussian beams [E. Karimi, G. Zito, B. Piccirillo, L. Marrucci
and E. Santamato, Opt. Lett. {\bf 32}, 3053(2007)]. Four topologies are dealt
with: the unknot, the Hopf link, the Borromean rings and the trefoil. It is
shown in the numerical way that neutral polarizable particles placed in such
light fields, upon precise tuning of the initial conditions, can be forced to
follow the identical knotted trajectories. A similar outcome is also valid for
charged particles that are subject to a ponderomotive potential. This effect
can serve to precisely steer particles along chosen complicated pathways
exhibiting non-trivial topological character, guide them around obstacles and
seems to be helpful in engineering more complex nanoparticles.
