fig5

Figure 5. (A) schematic of experiment setup for AFM bubble probes coupled with RICM; (B) Time variation of the force between a bubble and a bare mica surface; (C) Water film profile at point D in panel B. Interaction force curves between a bubble and a molybdenite surface treated in (D) 0, (E) 1, and (F) 5 ppm guar gum. The open symbols are experimental results obtained from AFM measurements, and the solid curves are theoretical calculations. Inset: Corresponding AFM images (5 μm × 5 μm) of a molybdenite surface treated in 0, 1, and 5 ppm guar gum. Reproduced from ref.^[21] for (A-C), Copyright 2015, the American Chemical Society; and ref.^[27] for (D-F), Copyright 2017, the American Chemical Society. AFM: Atomic force microscope; RICM: reflection interference contrast microscopy.