Laboratories
Flucto-Order Functions Research Team
牧島 一夫
Team Leader
Masahiko HARA (D.Eng.)
mail

Research Areas

Nanotechnological developments displayed rapid growth toward the end of the 20th century, and explained many issues encountered in the creation of regularly integrated structures at the molecular and atomic levels. On the microscopic scale, on the other hand, complete suppression of such disturbances as fluctuation and instability have become extremely difficult, restricting the development of more advanced devices, efforts which may be reaching their final limits. This research project proposes not to suppress these fluctuations and instabilities, but rather to actively utilize them, investigating functional materials that will utilize as motive forces emergent behaviors stemming from interactions seen in biomolecular devices and the feasibility of new ways of processing data utilizing these materials, as well as the development of new, revolutionary devices that will exploit those functions in a dynamic non-equilibrium state. This project will also establish a real-time research network in the Asian region centered on collaborative efforts between Japan and South Korea and, through international collaboration in such "fusion fields" as nanoscience and nanotechnology as well as in the biological and IT fields, developing new, post nano fields of research to emanate from the Asian nations through collaboration with Japan.

Research Subject

  1. Creation of biocomputer using slime mold (amoeba) with external feedback
  2. Creation of materials with self-organized pattern-rhythm formation from fluctuation
  3. Novel bio-dynamics system based on bio-sensor and external feedback
  4. Development of two-dimensional protein arrays and application to random number generation
  5. Development of single-molecule multi-property simultaneous characterization system

Related links

  1. RIKEN Advanced Science Institute Website_Laboratories PageNew Window
  2. Individual Website Laboratory PageNew Window

List of Selected Publications

  1. Choi, Y., Jeong, Y., Chung, H., Ito, E., Hara, M. and Noh, J.:
    "Formation of ordered self-assembled monolayers by adsorption of octylthiocyanates on Au(111)"
    Langmuir, 24, 91-96 (2008).
  2. Aono, M. and Hara, M.:
    "Spontaneous deadlock breaking on amoeba-based neurocomputer"
    BioSystems, 91, 83-93 (2008).
  3. Ito E., Noh J. and Hara M.:
    "Steric effects on adsorption and desorption behaviors of alkanethiol self-assembled monolayers on Au(111)"
    Chemical Physics Letters, 462, 209-212 (2008).
  4. Ikezoe Y, Kim S., Yamashita I. and Hara M.:
    "Random number generation by a two-dimensional crystal of protein molecules"
    Langmuir, 25, 8, 4293-4297 (2009).
  5. Kang H., Park T., Choi I., Ito E., Hara M. and Noh J.:
    "Formation of large ordered domains in benzenethiol self-assembled monolayers on Au(111) observed by scanning tunneling microscopy"
    Ultramicroscopy, 109, 1011-1014 (2009).
  6. Okabayashi Y., Ito E., Isoshima T., Ito H. and Hara M.:
    "Negative giant surface potential of peeled Alq3 thin film"
    Thin Solid Films, 518, 839-841 (2009).
  7. Kim S.-J., Aono M. and Hara M.:
    "Tug-of-war model for the two-bandit problem: nonlocally-correlated parallel exploration via resource conservation"
    BioSystems, 101, 29-36(2010).
  8. Ito E., Ito H., Isoshima T. and Hara M.:
    "Surface potential switching of Au-deposited p-sexiphenyl film controlled by visible light irradiation"
    Japanese Journal of Applied Physics, 49, 1, 01AE11-1-01AE11-3 (2010).
  9. Noh J., Ito E. and Hara M.:
    "Self-assembled monolayers of benzenehiol and benzenemethanethiol on Au(111): influence of an alkyl spacer on the structure and thermal desorption behavior"
    Journal of Colloid and Interface Science, 342, 513-517 (2010).
  10. Kang H., Lee N.-S., Ito E., Hara M. and Noh J.:
    "Formation and superlattice of long-range-ordered self-assembled monolayers of pentafluorobenzenethiols on Au(111)"
    Langmuir Letter, 26, 5, 2983-2985 (2010).

Members

Principal Investigator

Masahiko HARA
Team Leader

Staff Scientist

Kazunari OZASA
Senior Research Scientist
Takashi ISOSHIMA
Senior Research Scientist
Takafumi SASSA
Senior Research Scientist
Eisuke ITO
ASI Research Scientist
Masashi AONO
ASI Research Scientist
Song-Ju KIM
ASI Research Scientist

Postdoctoral Fellow

Takashi FUJIHARA
Postdoctoral Researcher

Student Trainee

Daisuke ISHIKAWA
Postdoctoral Researcher

Technical Assistant

Hiromi ITO
Technical Staff I

Visiting Research Staff

Sang Yun LEE
Visiting Scientist