BYU creates a true 3d image with a 'trapped particle'

[DelJo63]

"The future won't be the future without a Princess Leia projector."

The team used something called an "Optical Trap Display" to create the volumetric images. The difficulty with holograms so far is that you need something to reflect the laser light so your eyes can see it. BYU's device uses lasers to trap a a tiny particle in free space, and can force it to move in a path, much like how electromagnets deflect the electron beam in a CRT television. Other blue, red and green lasers then illuminate it. If the particle moves fast enough, it creates the illusion of a solid, animated holographic image.

the entreating subject has a great video explanation here.

 

[holdum323]

Very interesting. Thank you!