Self-organized mass-production technology
for minute optical functional elements:

Research and development is being carried out into the mass-production of nanophotonic droplets, which can realize specific optical energy conversion with high yield by suitably combining, in a self-organized manner, multiple types of nanomaterials via a resin which is locally cured using the excitation of phonon levels based on the localized nature of the optical near-field.
Nanophotonic droplet | TATE LABO
[Ref]  N. Tate, W. Nomura, T. Kawazoe, and M. Ohtsu, Optics Express, Vol. 22, Issue 9, pp. 10262-10269 (2014).
[Ref]  N. Tate, M. Naruse, Y. Liu, T. Kawazoe, T. Yatsui, and M. Ohtsu, Applied Physics B: Lasers and Optics, Vol. 112, Issue 4, pp. 587-592 (2013).
[Ref]  N. Tate, Y. Liu, T. Kawazoe, T. Yatsui, M. Naruse, and M. Ohtsu, Applied Physics B: Lasers and Optics, Vol. 110, Issue 3, pp. 293-297 (2013).

Giant light modulation effect realized by photon-assisted annealing:

Even in a material that does not originally exhibit magnetism, a modulation effect corresponding to a giant magneto-optical effect never observed before has been obtained by suitably adjusting the dopant distribution injected inside by using an originally developed method, and in this research, we elucidated the actual mechanisms involved and examined innovative information applications.
ZnO spatial light modulator | TATE LABO
[Ref]  N. Tate, T. Kawazoe, W. Nomura, and M. Ohtsu, Scientific Reports, Vol. 5, 12762, DOI 10.1038/srep12762 (2015).

High-level Security System based on Nanorandomness:

In addition to existing optical security layers, devices, readers, and processing systems that exploit nanoscale fluctuation effects are being developed for nanophotonic security, which is based on the novel concept of constructing a new security layer using nanophotonics.
Nano-artifact metrics | TATE LABO
[Ref]  N. Tate, M. Naruse, W. Nomura, T. Matsumoto, M. Hoga, Y. Ohyagi, S. Nishio, and M. Ohtsu, Applied Physics A: Materials Science & Processing, DOI 10.1007/s00339-015-9387-6 (2015).
[Ref]  T. Matsumoto, M. Hoga, Y. Ohyagi, M. Ishikawa, M. Naruse, K. Hanaki, R. Suzuki, D. Sekiguchi, N. Tate, and M. Ohtsu, Scientific Reports, Vol. 4, 6142, pp. 1-5 (2014).

E-mail: tate[at]ed.kyushu-u.ac.jp