June 29, 2012, 12:46 PM — Computer technology is supposed to get smaller and lighter, so new generations of displays that are astonishingly bright, clear and light may be a delight, but they're no surprise – except when they are.
The biggest surprise of the year in computer displays isn't a monitor that folds or rolls up (although it can do both those things); it's a high-resolution, three-dimensional display made from a soap bubble.
Actually the bubble isn't soap. It's a mix of two colloids (sub-microscopic particles evenly distributed within a fluid) that display consistent Bidirectional Reflectance Distribution Function (BRDF) characteristics.
What that means is that the material becomes opaque or reflective enough with the right stimulus to accurately display images projected on it.
The bubble display is is the brainchild of Yoichi Ochiai, a media artist, designer and graduate student at the University of Tokyo, who designed it as a demonstration of how to create a controllable BRDF-supporting display using fluids with specific characteristics. He and the other bubble designers will present their display in August at Siggraph 2012 in Los Angeles.
The "Colloidal Display" image comes from a single projector that sprays an image onto a small, round bubble in a thick frame while stabilizers bombard the bubble with ultrasonics that control the amount of transparency and reflectivity in the bubble itself.
Without the ultrasonics, variations in both would make it difficult to see a clear image in the bubble, according to the description from Oichiai and team member Alexis Oyama.
The ultrasonics also let designers change the characteristics of the display itself – something that's impossible with traditional materials.
Yoichi Ochiai/Univ. of Tokyo