what we do

Optical tweezers, which utilize the mechanical effect (optical force) associated with transfers of light momentum, were awarded the Nobel Prize in 2018 as an important tool in the field of biology. This optical tweezers manipulates objects by controlling optical force through the shape of laser beams, but were limited to spherical micro-scale particles. To overcome these limitations, we have pioneered a revolutionary approach: controlling optical force through nanostructures on the receiving end of light. This nanostructure optical actuator is expected to open new avenues from biological measurement to biological function control. Our laboratory aims to create innovative fundamental technologies and new value through nanostructure optical actuators. We pursue the principles of interaction between light and artificial nanostructures such as plasmonic structures, metamaterials/metasurfaces, and photonic crystals. This research is based on advanced microfabrication technology, optical measurement and control technology, and electromagnetic field simulation, with the goal of impacting a wide range of science and technology fields. This approach enables us to tackle various applications beyond bio-applications, including optical levitation technology, cavity optomechanics, ultra-sensitive force sensors, non-destructive photon detection, verification of macroscopic quantum properties, and even ultra-high-speed laser propulsion in space. We conduct our research utilizing the world-class nanotech facilities and skilled technical staff at the Nanotechnology Research Center, affiliated with our Research Institute for Electronic Science. 

3. Creation and Application of Novel Nanostructure Optical Actuators 

      ・Light-driven nanoactuators using artificial nanostructures

     Sci Adv (2020).

      ・Autonomous nanoactuators through localized plasmon control

      ・Optical levitation technology based on optical force control with nanostructures