51. Unusual properties of foams at low pressures
- Author
-
Fortes, M.A. and Vaz, M. Fátima
- Subjects
- *
OSTWALD ripening , *PRECIPITATION (Chemistry) , *BINDING energy , *NUCLEAR forces (Physics) - Abstract
In addition to a high coarsening rate, foams at low pressures may show special properties. These include a bulk modulus going to zero, a Poisson''s ratio approaching zero, and a zero binding energy, implying foam separation into individual bubbles at a critical pressure. We provide examples of calculations made for particular two-dimensional clusters with an ideal gas, which illustrate these features. We also discuss the difficulties in performing experiments at the low pressures at which the unusual properties show up. [Copyright &y& Elsevier]
- Published
- 2003
- Full Text
- View/download PDF