Related Experiment Video
Updated: Aug 23, 2026

Fluorescence Recovery after Merging a Droplet to Measure the Two-dimensional Diffusion of a Phospholipid Monolayer
Published on: October 15, 2015
Spreading dynamics of 2D dipolar Langmuir monolayer phases
P Heinig1, S Wurlitzer, Th M Fischer
1Department of Chemistry and Biochemistry, The Florida State University, Tallahassee, FL 32306, USA.
Abstract:
We study the spreading of a liquid 2D dipolar droplet in a Langmuir monolayer. Interfacial tensions (line tensions) and microscopic contact angles depend on the scale on which they are probed and obey a scaling law. Assuming rapid equilibration of the microscopic contact angle and ideal slippage of the 2D solid/liquid and solid/gas boundary, the driving force of spreading is merely expressed by the shape-dependent long-range interaction integrals. We obtain good agreement between experiment and numerical simulations using this theory.
Related Concept Videos
The Electrical Double Layer
Adsorption Isotherms I
Van der Waals Interactions
Electrochemical Systems
Adsorption Isotherms II
Potential Due to a Polarized Object

