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Thu Jan 24, 2013 4:31 am by Admin



Utopia Forum is almost complete and is now ready for all new members and visitors.

The forum is a little different to here as it uses a single page forum which puts all the topics on one page with important threads globally pinned at the top of the page.

Like i said we are ALMOST complete but we are still playing around and moving things about so please bare …

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touchable hologram

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touchable hologram

Post  Admin on Fri Aug 05, 2011 10:18 am

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Re: touchable hologram

Post  Leander8 on Mon Jan 02, 2012 8:01 pm

Most of us understand that a hologram is a projected three-dimensional image made up of beams of light. If you put your hand up to a hologram, it’ll pass straight through. Now, a team of Japansese researchers have devised a way to give a hologram a “surface” that you can feel when it touches your hand. The result are holograms that you can actually interact with using your hand, and can feel when you “touch” them.

The researchers, led by Professor Hiroyuki Shinoda of Tokyo University, have devised a projector that not only displays the hologram in open space, but also includes a pair of Nintendo Wii controllers that can sense motion and the position of your hand in the field where the hologram is being projected. That way the computer controlling the hologram knows where your hand is when you interact with it.

They also built an array of computer-controlled ultrasonic wave emitters with fine points that, when the hologram lands on the surface of your hand, emit pulses of air that feel like pressure on your hand. This way the system knows where your hand is, and when the hologram touches your hand, the ultrasonic waves make your hand feel like an object is there. It doesn’t create the sensation of weight or heft, but a prolonged or more powerful burst can indicate a “heavier” hologram.

So far, the technology has only been used for simple objects, like a “ball” bouncing off the surface of your palm, or “raindrops” falling onto your hand or arm. The researchers plan to extend the technology to create interfaces that provide haptic feedback but are actually entirely made of light. For example, Professor Shinoda says you can easily use these holograms to replace light switches in hospitals, which are sometimes the source of contamination because they’re shared by so many people.

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