Generation of Fermat's spiral patterns by solutal Marangoni-driven coiling in an aqueous two-phase system.

ABSTRACT: The solutal Marangoni effect is attracting increasing interest because of its fundamental role in many isothermal directional transport processes in fluids, including the Marangoni-driven spreading on liquid surfaces or Marangoni convection within a liquid. Here we report a type of continuous Marangoni transport process resulting from Marangoni-driven spreading and Marangoni convection in an aqueous two-phase system. The interaction between a salt (CaCl₂) and an anionic surfactant (sodium dodecylbenzenesulfonate) generates surface tension gradients, which drive the transport process. This Marangoni transport consists of the upward transfer of a filament from a droplet located at the bottom of a bulk solution, coiling of the filament near the surface, and formation of Fermat's sp

SUBMITTER: Xiao Y 

PROVIDER: S-EPMC9684484 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature