Development of bamboo structure in a 2D liquid foam
Departamento de Engenharia de Materiais, Instituto Superior
Técnico, Lisboa, Portugal
Accepted: 26 January 1998
An experimental study of 2D foam coarsening leading to a bamboo structure is presented. The foams were prepared by a new technique, in which the foam bubbles bridge between the liquid surface and a parallel glass plate at a short distance. The foam was formed between two concentric circular walls of separation D. The main result obtained is that the average bamboo segment length, , in the final bamboo structure is , independent of the liquid fraction in the foam. A simple explanation is provided for this result, based on measurements on 2D computer networks of foams intersected by two parallel lines.
PACS: 82.70.Rr – Aerosols and foams / 83.70.Hq – Heterogeneous liquids: suspensions, dispersions, emulsions, pastes, slurries, foams, block copolymers, etc.
© EDP Sciences, 1998