Interferometric investigation of the gas-state monolayer of mono-rhamnolipid adsorbing at an oil/water interface
| Autor: | Paola Brocca, E. Del Favero, Maurizio Corti, Magali Deleu, Laura Cantù, Valeria Rondelli |
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| Rok vydání: | 2018 |
| Předmět: |
Capillary wave
Materials science Drop (liquid) 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Adsorption Pulmonary surfactant Chemical engineering Excited state Electric field Amphiphile Monolayer Materials Chemistry Physical and Theoretical Chemistry 0210 nano-technology Spectroscopy |
| Zdroj: | Journal of Molecular Liquids. 266:687-691 |
| ISSN: | 0167-7322 |
| Popis: | We present a study on biosurfactant uptake at the interface of a millimeter-sized drop of squalene in water, by a recently developed differential interferometric technique. The technique allows detecting capillary waves, with amplitudes of the order of 10−9 m, excited on the surface of the drop by an electric field in the order of 5 V/cm. By studying the resonant surface modes of the drop it is possible to assess the interfacial properties as a function of the surfactant concentration in the water bulk. The technique allows to follow the adsorption process at extremely low surfactant concentration, not accessible by other methods, investigating the gas state in the π-A diagrams of 2D amphiphilic monolayers. |
| Databáze: | OpenAIRE |
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