Researchers Open Future Of Wearables With 'World's Thinnest Hologram'
19 Mai, 2017, 18:38 | Author: Claudine Rigal
The world's thinnest hologram has been developed by a team of scientists, which means your phone could be about to become a whole lot more futuristic.
Moving 3D holograms have always been the stuff of science fiction - from Star Wars to Iron Man - but we could be a step close to seeing them in everyday life.
The tech is simple to make, it can be seen with the naked eye without 3D goggles and is 1,000 times thinner than human hair.
"Conventional computer-generated holograms are too big for electronic devices but our ultrathin hologram overcomes those size barriers", explained Professor Min Gu from RMIT University. "Our nano-hologram is also fabricated using a simple and fast direct laser writing system, which makes our design suitable for large-scale uses and mass manufacture", Gu said.
Holograms are three-dimensional images created by the interactions of laser lights, and appear to have more depth than images formed from lenses.
"Integrating holography into everyday electronics would make screen size irrelevant - a pop-up 3D hologram can display a wealth of data that doesn " t neatly fit on a phone or watch.
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The revolutionary nano-hologram was designed by an Australian-Chinese research team at the Royal Melbourne Institute of Technology (RMIT), which was behind the research. To generate enough phase shifts, those holograms need to be at the thickness of optical wavelengths.
The RMIT team, working with the Beijing Institute of Technology (BIT) in China, has broken this thickness limit with a 25 nanometre hologram based on a topological insulator material - a novel quantum material that holds the low refractive index in the surface layer but the ultrahigh refractive index in the bulk.
The researchers say the next step is to develop a rigid thin film that can be laid on top of an LCD screen to create the 3D holographic display.
Dr Zengji Yue, another scientist on the project, said: "This involves shrinking our nano-hologram's pixel size, making it at least 10 times smaller".
How long will it be until we can view pop-up 3D displays from our smartphone? We would like to see industry engage with research.
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