(Georgia Institute of Technology, 2007-03)
Li, Tai-De; Gao, Jianping; Szoszkiewicz, Robert; Landman, Uzi; Riedo, Elisa
Direct and simultaneous measurements of the normal and lateral forces encountered by a nanosize spherical silicon tip approaching a solid surface in purified water are reported. For tip-surface distances, 0±0.03 nm