Institute for Materials Chemistry and Engineering, Kyushu University


LAST UPDATE 2021/06/09

  • 研究者氏名
    Researcher Name

    村山光宏 Mitsuhiro MURAYAMA
    教授 Professor
  • 所属
    Professional Affiliation

    Institute for Materials Chemistry and Engineering, Kyushu University

    融合材料部門 ナノ材料解析分野
    Division of Integrated Materials, Nanoscale Characterization of Materials
  • 研究キーワード
    Research Keywords

    微細組織 – 特性の因果関係
    Electron Microscopy
    in-situ Electron Microscopy (Operando techniques)
    Microstructure – Physical Properties Relationships
Research Subject
Interactions among natural, incidental and engineered Nanoparticles in the Earth system

研究の背景 Background


Nanomaterials have been part of the Earth system for billions of years, but human activities are changing the nature and amounts of these materials. Since the Industrial Revolution some two-and-a-half centuries ago, incidental nanomaterials (produced unintentionally by human activity) have been continuously produced and distributed worldwide. In the past half-century, engineered nanomaterials have been produced in very small amounts relative to the other two types of nanomaterials, but still in large enough quantities to make them a consequential component of the planet. All nanomaterials, regardless of their origin, have distinct chemical and physical properties throughout their size range, clearly setting them apart from their macroscopic equivalents and necessitating careful study.

研究の目標 Outcome


Following major advances in experimental, computational, analytical, and field approaches, it is becoming possible to better assess and understand all types and origins of nanomaterials in the Earth system. It is also now possible to frame their immediate and long-term impact on environmental and human health at local, regional, and global scales. We take advantage of advanced electron microscopy techniques to argue that adherence to the classic definition of a mineral has undoubtedly left large numbers of non-crystalline and poorly crystalline materials on the periphery, or worse understudied and even unnoticed especially when the minerals are in nanometer geometry.

研究図Research Figure

Fig.1. From field sampling to global perspective. This subject requires holistic / transdisciplinary approaches and is closely related to the sustainable development goals.

文献 / Publications

Steven R. Spurgeon, Colin Ophus, Lewys Jones, Amanda Petford-Long, Sergei V., Kalinin, Matthew J. Olszta, Rafal E. Dunin-Borkowski, Norman Salmon, Khalid Hattar, Wei-Chang D. Yang, Renu Sharma, Yingge Du, Ann Chiaramonti, Haimei Zheng, Edgar C. Buck, Libor Kovarik, R. Lee Penn, Dongsheng Li, Xin Zhang, Mitsuhiro Murayama, and Mitra L. Taheri, “ Towards Data-Driven Next-Generation Transmission Electron Microscopy", Nature Materials, (2020).