Slide Electrification Charge Can Exist without Residual Liquid Film: KPFM Measurements near Receding Three-Phase Contact Lines

Key Points

• To understand charge transport behavior at the solid-gas-liquid three-phase contact line during receding conditions.
• Used Kelvin Probe Force Microscopy (KPFM) to measure charge at TPCLs.
• Conducted experiments with varying liquid film states during receding contact.
• Analyzed charge distribution dynamics near the TPCL.
• Charge transport is observed even without residual liquid films.
• Electrification effects are significant at receding contact lines.
• Findings enhance understanding of interfacial charge behaviors.