Biosurfactant-Mediated Alteration of Pore-Scale Evaporation: Surface Tension Effects

Description

This dataset supports the paper “Biosurfactant-Mediated Alteration of Pore-Scale Evaporation: Surface Tension Effects” and contains 20 high-speed videos (80× playback) from five independent trials of four pore-scale evaporation cases: deionized water on hydrophilic glass beads, deionized water on hydrophobic Teflon beads, 50 ppm Surfactin solution on glass beads, and 50 ppm Surfactin solution on Teflon beads. The experiments were conducted in a controlled three-bead single-pore geometry using 2.38 mm diameter beads, with a 10 µL droplet placed at the pore center. The videos capture pore-scale evaporation behavior, including droplet evolution, contact-line pinning and depinning, projected length of contact (PLOC), liquid-island formation, and final evaporation. The dataset was developed to examine visually how Surfactin alters evaporation through changes in surface tension and wettability, and the results show that Surfactin accelerates evaporation and advances breakup, with a stronger effect in hydrophobic Teflon pores than in hydrophilic glass pores. These files are intended for visual comparison of evaporation behavior across treatments and for qualitative interpretation of pore-scale evaporation-stage transitions. Quantitative analysis of the recorded events is presented in the associated paper.

Institutions

• Kansas State University

  Kansas, Manhattan

Categories

Funders

• U.S. National Science Foundation

  Government of the United States of America

  Alexandria

  Grant ID: 2316295

Licence