Centers & Labs

RIKEN Center for Advanced Photonics

RIKEN–SIOM Joint Research Unit

Unit Leader: Koji Sugioka (D.Eng.)
Koji  Sugioka(D.Eng.)

Currently, laser is an essential tool for processing and synthesis of materials and thereby is widely employed for practical use. Our research unit aims at research and development of advanced laser processing which realizes low environmental load, high quality, high efficiency fabrication of materials by the joint research with Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science. Specifically, by using femtosecond and picosecond lasers that emit ultrashort pulses with an extremely high peak intensity, novel material processing that cannot be performed by the other conventional techniques is developed. The developed techniques include three-dimensional micro/nanofabrication, high aspect ratio machining, and synthesis of new materials, which are applied for fabrication of biochips and high function photonic and electronic microdevices.

Main Research Field


Related Research Fields

Complex systems / Interdisciplinary science and engineering


  • Laser processing
  • Micro/nanofabrication
  • 3D fabrication
  • Biochip

Selected Publications

  1. Xu J., Kawano H., Liu W., Hanada Y., Lu P., Miyawaki A., Midorikawa K., and Sugioka K.:
    "Controllable alignment of elongated microorganisms in a 3D microspace using electrofluidic devices manufactured by hybrid femtosecond laser microfabrication"
    Microsystems Nanoengin. 3,16078 (2017).
  2. He F., Yu J., Tan Y., Chu W., Zhou C., Cheng Y., and Sugioka K.:
    "Tailoring femtosecond 1.5-μm Bessel beams for manufacturing high-aspect-ratio through-silicon vias"
    Sci. Rep. 7, 40785 (2017).
  3. Sugioka K.:
    "Progress in ultrafast laser processing and future prospects"
    Nanophotonics 5, 17-37 (2016).
  4. Wu, D., Xu, J., Niu, L., Wu, S., Midorikawa, K,. and Sugioka, K.:
    "In-channel integration of designable microoptical devices using flat scaffold-supported femtosecond-laser microfabrication for coupling-free optofluidic cell counting"
    Light Sci. Appl. 4, e228 (2015).
  5. Wu, D., Wu, S., Xu, J., Niu, L., Midorikawa, K., and Sugioka, K.:
    "Hybrid femtosecond laser microfabrication to achieve true 3D glass/polymer composite biochips with multiscale features and high performance: the concept of ship-in-a-bottle biochip"
    Laser Photon. Rev. 8, 458-467 (2014).
  6. Sugioka, K., and Cheng, Y.,
    "Ultrafast lasers - reliable tools for advanced materials processing"
    Light Sci. Appl. 3, e149 (2014).
  7. Sugioka K., and Cheng, Y.,
    "Femtosecond laser three-dimensional micro- and nanofabrication"
    Appl. Phys. Rev. 1, 041303 (2014).
  8. Xu, J., Wu, D., Hanada, Y., Chen, C., Wu, S., Cheng, Y., Sugioka, K., and Midorikawa, K.:
    "Electrofluidics fabricated by space-selective metallization in glass microfluidic structures using femtosecond laser direct writing"
    Lab Chip 13, 4608 (2013).
  9. Sugioka, K. and Cheng, Y.:
    "Femtosecond laser processing for optofluidic fabrication"
    Lab Chip 12, 3576 (2012).
  10. Sugioka, K., Hanada, Y., and Midorikawa, K.:
    "Three-dimensional femtosecond laser micromachining of photosensitive glass for biomicrochips"
    Laser Photon. Rev. 3, 386 (2010).

Lab Members

Principal Investigator

Koji Sugioka
Unit Leader

Core Members

Jian Xu
Research Scientist
Daniela Serien
Postdoctoral Researcher
Neng Liu
Postdoctoral Researcher
Yasutaka Hanada
Visiting Scientist
Seisuke Nakashima
Visiting Scientist
Felix Sima
Visiting Scientist
Yang Liao
Visiting Scientist