The mechanism of small wear particles entrainment in friction under boundary lubrication - Tokoroyama, Takayuki; Okashita, Masahiro; Zhang, Ruixi; Murashima, Motoyuki; Tsuboi, Ryo; Yoshida, Takuji; Shiomi, Hiroshi; Umehara, Noritsugu (Frontiers in Mechanical Engineering, 2024)