Plenty of technology development comes in areas where we’ve already settled on an efficient design. Wind turbines are a great example. Several decades ago, some radical ideas were floating around, touted as providing heightened efficiencies. But wind turbines have since stabilized on a standard design, and most research now goes into figuring out how to get the most out of that design. In a lot of ways, it’s boring compared to the lingering potential for a complete reinvention.
Right now, 3D displays are back in the much more fun “radical ideas” phase. While various VR technologies are on the market, they’re unsatisfying in various ways. A handful of technologies has been demonstrated that provide 3D images without the need for goggles or glasses. But these ideas have their own problems, including slow refresh and complicated hardware, and they lack a standardized mode of user interaction. One company has developed a 3D display that can be manipulated by hand, but without any feedback, this can be tricky.
This week, researchers are describing a new take on a recent 3D display development that mixes in a key ingredient: sound. The use of ultrasound allows the researchers to both run the display and provide haptic feedback for interactions with it. As an added bonus, the new display can allow audible sound to originate from objects within the display itself.