[9p-M116-1~13] 3.1 Basic optics and frontier of optics

[9p-M116-1] Opto-Thermophoretic Manipulation of Plasmonic Nanoparticles

〇Kenji Setoura^1,2, Tetsuro Tsuji¹, Syoji Ito¹, Satoyuki Kawano¹, Hiroshi Miyasaka¹ (1.Osaka Univ., 2.Hokkaido Univ.)

Keywords:optical manipulation, plasmonic nanoparticles, thermophoresis

In conventional optical tweezers, side effects arising from photothermal conversion such as fluid convection of solvents and thermophoresis of solutes are unavoidable because intense laser irradiation is required. The present study aims to explore manipulation of nano-objects using radiation pressure and thermophoresis cooperatively by controlling heat generation. We demonstrated that the ratio of radiation pressure and thermophoretic force acting on Au nanoshells in water can be tuned by changing irradiation conditions.