Square Peg, Round Hole

Bubbles Break Spherical Mold

Not all bubbles are round. In fact, a new laser-based technique has been developed to make square bubbles, donut bubbles, and V-shaped bubbles. The researchers claim in the January Physical Review E that many other shapes can be made on-demand. These vapor bubbles and the liquid jets they create could have practical uses in moving and bending nanostructures, as well as for manipulating biological cells.