ArticleLangmuir : the ACS journal of surfaces and colloids2019
Comparison of Line Tension Measurement Methods for Lipid Monolayers at Liquid-Liquid Coexistence.
Article in Langmuir : the ACS journal of surfaces and colloids, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed.
- Using diffusion-induced growth instabilities to measure line tension at liquid condensed-liquid expanded domain boundaries.Journal of colloid and interface science · 2026Article
- High-Speed Atomic Force Microscopy Reveals the Dynamic Interplay of Membrane Proteins is Lipid-Modulated.Small science · 2025Article
- Article
- Spontaneous evolution of equilibrium morphology in phospholipid-cholesterol monolayers.Science advances · 2022Article
- Bilayer aggregate microstructure determines viscoelasticity of lung surfactant suspensions.Soft matter · 2021Article
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Abstract
Several methods of measuring the line tension between phase-separated liquid-ordered-liquid -disordered domains in phospholipid-cholesterol systems have been proposed. These experimental techniques are typically internally self-consistent, but the measured line tension values vary widely among these techniques. To date, no measurement of line tension has utilized multiple experimental techniques to look at the same monolayer system. Here we compare two nonperturbative methods, Fourier analysis of boundary fluctuations (BA) and one proposed by Israelachvili involving the analysis of domain size distributions (SD), to extract the line tension in a 70 mol % DMPC/30 mol % dihydrocholesterol (DChol) mixture as a function of surface pressure. We show that BA predicts the expected variation in line tension measurements consistent with the theoretical critical exponent whereas SD does not. From this comparison, we conclude that the size distribution of monolayer domains is metastable and primarily determined by the kinetics of domain nucleation and subsequent aging.
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