2 research outputs found
Holographic Plasmonic Nanotweezers for Dynamic Trapping and Manipulation
We
demonstrate dynamic trapping and manipulation of nanoparticles
with plasmonic holograms. By tailoring the illumination pattern of
an incident light beam with a computer-controlled spatial light modulator,
constructive and destructive interference of plasmon waves create
a focused hotspot that can be moved across a surface. Specifically,
a computer-generated hologram illuminating the perimeter of a silver
Bull’s Eye nanostructure generates surface plasmons that propagate
toward the center. Shifting the phase of the plasmon waves as a function
of space gives complete control over the location of the focus. We
show that 200 nm diameter nanoparticles trapped in this focus can
be moved in arbitrary patterns. This allows, for example, circular
motion with linearly polarized light. These results show the versatility
of holographically generated surface plasmon waves for advanced trapping
and manipulation of nanoparticles
Holographic Plasmonic Nanotweezers for Dynamic Trapping and Manipulation
We
demonstrate dynamic trapping and manipulation of nanoparticles
with plasmonic holograms. By tailoring the illumination pattern of
an incident light beam with a computer-controlled spatial light modulator,
constructive and destructive interference of plasmon waves create
a focused hotspot that can be moved across a surface. Specifically,
a computer-generated hologram illuminating the perimeter of a silver
Bull’s Eye nanostructure generates surface plasmons that propagate
toward the center. Shifting the phase of the plasmon waves as a function
of space gives complete control over the location of the focus. We
show that 200 nm diameter nanoparticles trapped in this focus can
be moved in arbitrary patterns. This allows, for example, circular
motion with linearly polarized light. These results show the versatility
of holographically generated surface plasmon waves for advanced trapping
and manipulation of nanoparticles