Particle-size sorting system of lunar regolith using electrostatic traveling wave

M. Adachi*, H. Moroka, Hiroyuki Kawamoto, S. Wakabayashi, T. Hoshino


    研究成果: Article査読

    25 被引用数 (Scopus)


    A particle-size sorting system of lunar regolith using an electrostatic traveling wave is developed for In-Situ Resource Utilization on the Moon to extract indispensable resources from the regolith and realize long-term exploration. The regolith is sorted by utilizing a balance between the electrostatic and gravitational forces, which are determined depending on particle size, in vacuum conditions where the particles are not subjected to air drag. In this study, the effect of particle charge on the particle motion is confirmed by conducting model experiments and numerical calculations based on the distinct element method. In addition, it was experimentally demonstrated that particles less than approximately 20 μm in diameter were efficiently separated from the bulk of a lunar regolith simulant FJS-1 in a vacuum condition (∼1.5 × 10−2 Pa), and the performance of the size sorting system on the Moon was predicted by the numerical calculations. The system utilizes only the electrostatic force, and it does not require any gas, liquid, or mechanical moving parts.

    ジャーナルJournal of Electrostatics
    出版ステータスPublished - 2017 10月 1

    ASJC Scopus subject areas

    • 電子材料、光学材料、および磁性材料
    • バイオテクノロジー
    • 凝縮系物理学
    • 表面、皮膜および薄膜
    • 電子工学および電気工学


    「Particle-size sorting system of lunar regolith using electrostatic traveling wave」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。