  The orbital angular momentum of an optical vortex field is found to twist
high viscosity donor material to form a micron-scale 'spin jet'. This unique
phenomenon manifests the helical trajectory of the optical vortex. Going beyond
both the conventional ink jet and laser induced forward mass transfer (LIFT)
patterning technologies, it also offers the formation and ejection of a
micron-scale 'spin jet' of the donor material even with an ultrahigh viscosity
of 4 Pas. This optical vortex laser induced forward mass transfer (OV-LIFT)
patterning technique will enable the development of next generation printed
photonic/electric/spintronic circuits formed of ultrahigh viscosity donor dots
containing functional nanoparticles, such as quantum dots, metallic particles
and magnetic ferrite particles, with ultrahigh spatial resolution. It can also
potentially explore a completely new needleless drug injection.
