1 research outputs found
Bending Gold Nanorods with Light
V-shaped
gold nanoantennas are the functional components of plasmonic
metasurfaces, which are capable of manipulating light in unprecedented
ways. Designing a metasurface requires the custom arrangement of individual
antennas with controlled shape and orientation. Here, we show how
highly crystalline gold nanorods in solution can be bent, one-by-one,
into a V-shaped geometry and printed to the surface of a solid support
through a combination of plasmonic heating and optical force. Significantly,
we demonstrate that both the bending angle and the orientation of
each rod-antenna can be adjusted independent from each other by tuning
the laser intensity and polarization. This approach is applicable
for the patterning of V-shaped plasmonic antennas on almost any substrate,
which holds great potential for the fabrication of ultrathin optical
components and devices