As MIT News explains, a blend of solids and liquids in the same suspension could steer light in different directions at the same time. Let's imagine that you can create a grid of solids and liquids and each one can be heated to a different temperature with an electrode. It's possible to have one set of electrodes creating a "foreground" image that pushes light straight at you, while others create the illusion of depth with a "background." There's also the potential for the technology to be used in photography, replacing diffuser boxes that help create the illusion of natural light. Just, you know, give the folks at MIT a couple of decades to refine the idea before you start demanding a holographic TV for the family room.