Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces.

ABSTRACT: Adsorption of surface-active molecules to fluid-fluid interfaces is ubiquitous in nature. Characterizing these interfaces requires measuring surfactant adsorption rates, evaluating equilibrium surface tensions as a function of bulk surfactant concentration, and relating how surface tension changes with changes in the interfacial area following equilibration. Simultaneous visualization of the interface using fluorescence imaging with a high-speed confocal microscope allows the direct evaluation of structure-function relationships. In the capillary pressure microtensiometer (CPM), a hemispherical air bubble is pinned at the end of the capillary in a 1 mL volume liquid reservoir. The capillary pressure across the bubble interface is controlled via a commercial microfluidic flow controller tha

SUBMITTER: Iasella SV 

PROVIDER: S-EPMC10440739 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature