【表面と真空 (Vacuum and Surface Science)】は，2018年4月の日本表面科学会と日本真空学会の合併により設立された公益社団法人 日本表面真空学会が出版する学術論文誌です。設立に先立つ2018年1月に創刊された新しいジャーナルになります。前身誌は日本真空学会の【Journal of the Vacuum Society of Japan】と日本表面科学会の【表面科学】になり，双方の記事種を踏襲し，その上で新たな分野への展開を目指しています。巻号は，歴史のより長い【Journal of the Vacuum Society of Japan】の巻数を引き継ぎ，第61巻からの創刊となります。
Interface plays crucial roles for mechanical and functional properties. Despite its importance, the structure-property relationships of the interface have not been fully understood because a determination of the interface structure accompanies huge computations which is caused by the degrees of geometrical freedom of the interface. The acceleration of the interface structure searching is important for the comprehensive understanding of the structure-property relationships of the interface. Here, we applied machine learning techniques for the interface structure searching. Two methods, virtual screening and kriging, are mainly introduced. Our methods achieved considerably high efficiency and can be applied to any materials.
Kyoto Collection of Human Embryo and Fetus is a valuable collection for human developmental research during pregnancy. Although serial sections contain huge morphological information, specimens are sliced and destroyed. Three-dimensional imaging in non-destructive way are developed and now applied to the human specimens. Now, morphological changes of embryo and fetus are analyzed by geometric morphometrics as well as conservative morphometric technique using obtained images.
Development of efficient fuel cell and electrochemical cell devices to retrieve energy in a renewable manner lies in the molecular level understanding of the catalytic chemical transformation processes at surfaces and interfaces. This article demonstrates the use of operando soft x-ray photoelectron spectroscopy to correlate the chemical state of electrode and the electrochemical performance of electrochemical devices. Examples are shown for oxygen reduction reaction on the Pt cathode catalyst in proton exchange membrane fuel cells, and oxygen evolution on the IrO2 anode in water electrolyzer.
Semiconductor devices with complicated structures have been developed, and it is becoming increasingly important to understand three-dimensional (3D) structures of devices with nanometer resolution. The key to successful nanometer-scale 3D analysis is sample preparation technology and it has been highly developed. By combining or correlating multiple physical analyses, limitations of single analysis method are well covered and new information of 3D devices is obtained. Simultaneously acquired multi-signal STEM images are effective for internal structure analysis of 3D devices.
We present an overview of recent studies on the moiré superlattices in Van der Waals atomic layer materials. We first introduce typical moiré superlattices such as twisted bilayer graphene and graphene h-BN superlattice. We also argue about the Hofstadter fractal energy spectrum in magnetic fields, the strain effect and domain formation, and the graphene quasicrystals.