Researchers Use Femtosecond Lasers To Display Touchable Images In The Air

TechCrunch

A Japanese company called Aerial Burton has been using lasers to ionize air molecules in midair for a few years now, thereby creating bright pixels that float in space. Using the original system, however, you were essentially creating floating plasma which could burn you if you touched it. Now, however, the company has reduced the power necessary to generate the images by using femtosecond lasers, a feat that lets you actually tap images to interact with them.

From Spectrum:

Our system has the unique characteristic that the plasma is touchable. It was found that the contact between plasma and a finger causes a brighter light. This effect can be used as a cue of the contact. One possible control is touch interaction in which floating images change when touched by a user. The other is damage reduction. For safety, the plasma voxels are shut off within a single frame…

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