This report is a personal research history of the author. The author engaged in the extreme high vacuum project in 1988. Before that time, the research field of the author was limited to the surface finishing of metals. However, since 1988 the author has been stimulated by the intense communication with researchers of different fields, and the author’s research field has been expanded even to the standardization of surface analyses. The author has been involved in the activities of Japan Vacuum Society and Surface Science Society of Japan since 1980’s. Through these activities in societies, the author could get to know many nice researchers, and these researchers help the author to challenge new research fields. Extreme high vacuum is one of the bridges between vacuum and surface. The author believes there are many bridges between vacuum and surface, and communications through these bridges will make the society more active.
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