@article{3698,
  author = {M Motaghian and R Shirsavar and M Erfanifam and M Sabouhi and E van der Linden and H Stone and D Bonn and Mehdi Habibi},
  title = {Rapid Spreading of a Droplet on a Thin Soap Film.},
  abstract = { <p>We study the spreading of a droplet of surfactant solution on a thin suspended soap film as a function of dynamic surface tension and volume of the droplet. Radial growth of the leading edge (R) shows power-law dependence on time with exponents ranging roughly from 0.1 to 1 for different surface tension differences (Δσ) between the film and the droplet. When the surface tension of the droplet is lower than the surface tension of the film (Δσ > 0), we observe rapid spreading of the droplet with  ≈ , where α (0.4 < α < 1) is highly dependent on Δσ. Balance arguments assuming the spreading process is driven by Marangoni stresses versus inertial stresses yield α = 2/3. When the surface tension difference does not favor spreading (Δσ < 0), spreading still occurs but is slow with 0.1 < α < 0.2. This phenomenon could be used for stretching droplets in 2D and modifying thin suspended films.</p> },
  year = {2019},
  journal = {Langmuir},
  volume = {35},
  pages = {14855-14860},
  month = {2019 Nov 19},
  issn = {1520-5827},
  doi = {10.1021/acs.langmuir.9b02274},
  language = {eng},
}