[14p-413-1~12] Recent progress of Nano-Material Optical-Manipulation

[14p-413-10] Plasmon enhanced nearfield on twisted surface relief induces chiral mass-transport

〇Takashige Omatsu^1,2 (1.AIS, Chiba Univ., 2.MCRC, Chiba Univ.)

Keywords:Optical manipulation, Optical vortex, Photo-isomerization

Chiral structures on a nano or micro-scale act potentially as important roles, for instnace, plasmonic metasurfaces to selectively assign and enhance the chirality of chemical composites. They will also provide us to offer chiral sensitive nano-imaging systems.To date, we and co-workers have discovered that an azo-polymer film can be deformed to establish a single-armed chiral surface relief arising from wavefront-sensitive mass transport by the illumination of a circularly polarized green optical vortex. Such a chiral surface relief will be potentially utilized to the aforementioned fields.In this presentation, we report on that plasmon-enhanced nearfield induces chiral mass transport, in which the superimposed azo-polymer is twisted around the chiral surface relief fabricated by optical vortex illumination together with nano-imprinting technology.