Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) OKUBO Hikaru and SASAKI Shinya,Frequency modulation atomic force microscopy (FM-AFM) observation for the superlow friction interface of diamond-like carbon lubricated with an environmentally friendly ester-based oil,The Proceedings of the Machine Design and Tribology Division meeting in JSME,2424-3051,The Japan Society of Mechanical Engineers,2018,2018.18,0,2C2-3,https://cir.nii.ac.jp/crid/1390282763060985984,https://doi.org/10.1299/jsmemdt.2018.18.2c2-3