Surface strain modulation of insoluble surface film properties
| Autor: | J. D. Barter |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Fluid Flow and Transfer Processes
Physics Capillary wave business.industry Mechanical Engineering Computational Mechanics Condensed Matter Physics Surface tension Wavelength Optics Mechanics of Materials Surface wave Dispersion relation Monolayer Composite material business Elastic modulus Wilhelmy plate |
| Zdroj: | Physics of Fluids. 6:2606-2616 |
| ISSN: | 1089-7666 1070-6631 |
| DOI: | 10.1063/1.868150 |
| Popis: | The complex dispersion relation of capillary waves on water has been measured in a wavelength regime (λ∼1–2 cm) of interest to radar imaging. Two noninvasive sensors: a capacitive wave height antenna and a one‐dimensional scanning laser slope gauge, are used to study the alteration of surface tension and surface elastic modulus in the presence of monomolecular surface films. On a static water surface, these sensors are compared to accepted standard techniques. The surface tension results are compared to a Wilhelmy plate while the elastic modulus results are compared to equations of state obtained by Langmuir trough techniques. The sensors are then employed to measure the response of surface film properties to surface areal strains for film pressures and strain rates, which are comparable to natural films in the presence of ship‐generated surface currents. In the experiments reported in this paper, only insoluble surfactants are used. The monolayer surface films considered in this study are found to exhibi... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|