If you ever thought of soap bubbles as small floating movie capsules, you were not alone in your observation. Researchers at the University of Tokyo have developed a system that uses such bubbles as kind of projection screen based on colloidal liquids. The bubbles are made of a thin film, and allow light to create a reflection on one section before passing through other sections. If the reflection can be controlled, then the bubble can be used as a display.
Read the full article: Japanese designers develop colloid bubbles as projection screens