1. Proximity coupling of boundary waves in liquids
- Author
-
M. Gerhard and W. Staude
- Subjects
Coupling ,business.industry ,Chemistry ,Relaxation (NMR) ,General Physics and Astronomy ,Boundary (topology) ,Mechanics ,Laser ,Light scattering ,Viscoelasticity ,law.invention ,Transverse plane ,Optics ,law ,Physical and Theoretical Chemistry ,business ,Order of magnitude - Abstract
We measured the distance‐dependent coupling of transverse boundary waves in a system of layers of two immiscible liquids by laser light scattering. The results were explained on the basis of a theoretical treatment of the dynamics of this system. The deviations of the results for very small distances of the two interfaces could be accounted for by the assumption of a small surface viscoelasticity, which is about one order of magnitude smaller than those measured so far with light‐scattering techniques. The technique used in this paper might therefore be well suited to study molecular interactions and relaxation processes at liquid boundaries, which are responsible for this viscoelasticity.
- Published
- 1995