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鈴木 誠也; 根本 善弘*; 椎木 菜摘*; 中山 佳子*; 竹口 雅樹*
Annalen der Physik, 535(9), p.2300122_1 - 2300122_12, 2023/09
被引用回数：0 パーセンタイル：0(Physics, Multidisciplinary)Germanene is a two-dimensional (2D) germanium (Ge) analogous of graphene, and its unique topological properties are expected to be a material for next-generation electronics. However, no germanene electronic devices have yet been reported. One of the reasons for this is that germanene is easily oxidized in air due to its lack of chemical stability. Therefore, growing germanene at solid interfaces where it is not oxidized is one of the key ideas for realizing electronic devices based on germanene. In this study, the behavior of Ge at the solid interface at high temperatures was observed by transmission electron microscopy (TEM). To achieve such in situ heating TEM observation, we fabricated a graphene/Ge/graphene encapsulated structure. In situ heating TEM experiments revealed that Ge like droplets moved and coalesced with other Ge droplets, indicating that Ge remained as a liquid phase between graphene layers at temperatures higher than the Ge melting point.
temperature measurement for lamp-based heating device墨田 岳大; 須藤 彩子; 高野 公秀; 池田 篤史
Science and Technology of Advanced Materials; Methods (Internet), 2(1), p.50 - 54, 2022/02
Despite a wide variety of its practical applications, handiness, and cost-effectiveness, the advance of lamp-based heating device is obstructed by one technical difficulty in measuring the temperature on a heated material. This difficulty originates in the combination of polychromatic light source and a radiation thermometer that determines temperature from radiation (i.e. light). A new system developed in this study overcomes this intrinsic difficulty by measuring exclusively the radiation from the heated material, allowing us to perform the direct and measurement of temperature in a light-based heating device (an arc image furnace). Test measurements demonstrated the reliability of temperature measurement using the developed system as well as its promising potential for the determination of emissivity at high temperature particularly in the infrared region.
