Research Institute for Electronic Science, Hokkaido University


LAST UPDATE 2021/06/08

  • 研究者氏名
    Researcher Name

    小野円佳 Madoka ONO
    准教授 Associate Professor
  • 所属
    Professional Affiliation

    Research Institute for Electronic Science, Hokkaido University

    附属グリーンナノテクノロジー研究センター 光電子ナノ材料分野
    Green Nanotechnology Research Center, Laboratory of Nanostructured Functional Materials
  • 研究キーワード
    Research Keywords

    Oxide glass
    Optical properties
    Mechanical properties
Research Subject
Functionalization of Inorganic amorphous by controlling its structure

研究の背景 Background


Inorganic oxide glass is easily applicable for production. It serves excellent transparency, so that it is widely used in large scale for huge buildings, optical fibers for communication, and as protective films for various electricity. Its atomic structure is thought as being random. Thus, energy propagation such as sound or heat is disturbed, and it is difficult to improve the propagation characteristics and functionality. However, it’s found recently that light scattering loss can be suppressed by quenching the glass under high pressure and high temperature conditions. The shock propagation can be controlled by hybridizing glass with metal nanoparticles.

研究の目標 Outcome


It is predicted by computer simulation, that the light scattering loss will be significantly suppressed in silica glass quenched under high-temperature and high-pressure, and the ultimate transparency will be obtained. Therefore, we are trying to experimentally demonstrate the ultimate transparent glass and clarify the mechanism of its loss reduction. The structure of such glass should be highly ordered due to topological pruning. We aim to develop methods other than using pressure to control the topology.

研究図Research Figure

Fig.1. Glass plates with different compositions are prepared with similar stress profiles. Their fracture behavior differs largely due to the different energy propagation property.

Fig.2. A footprint of the Vickers indentation for the Cu–implanted sodalime silicate glass with indentation load of 0.5 kgf (a), cross-sectional view of the indentation (b) and the in-situ stress distribution (c). (d,e,f) is the results of non-doped sodalime silicate glass with the same indentation load.

Fig.3. (a) Atomic picture, (b) void picture of silica glass. The lower figure shows that Rayleigh scattering loss dramatically decreases by decreasing void size in silica glass. Black dots show the data taken for glass made using high-pressure machine.

文献 / Publications

Appl. Phys. Lett. 101 (2012) 164103. / Opt. Exp. 26 (2018) 7942. / SCRIPTA MATERIALIA 166 (2019) 1 / Sci. Rep. 9 (2019) 15387 / npj Computational Materials (2020) 6:139 / J. Am Ceram Soc. 104 (2020) 114 / J. Am. Ceram. Soc. 00 (2021) 1 / npj Materials Degradation 5 (2021) 1   etc.