Archive for the ‘holograms’ category: Page 18
Dec 7, 2018
Multichannel vectorial holographic display and encryption
Posted by Saúl Morales Rodriguéz in categories: encryption, holograms, nanotechnology, security
Holography is a powerful tool that can reconstruct wavefronts of light and combine the fundamental wave properties of amplitude, phase, polarization, wave vector and frequency. Smart multiplexing techniques (multiple signal integration) together with metasurface designs are currently in high demand to explore the capacity to engineer information storage systems and enhance optical encryption security using such metasurface holograms.
Holography based on metasurfaces is a promising candidate for applications in optical displays/storage with enormous information bearing capacity alongside a large field of view compared to traditional methods. To practically realize metasurface holograms, holographic profiles should be encoded on ultrathin nanostructures that possess strong light-matter interactions (plasmonic interactions) in an ultrashort distance. Metasurfaces can control light and acoustic waves in a manner not seen in nature to provide a flexible and compact platform and realize a variety of vectorial holograms, with high dimensional information that surpass the limits of liquid crystals or optical photoresists.
Among the existing techniques employed to achieve highly desired optical properties, polarization multiplexing (multiple signal integration) is an attractive method. The strong cross-talk associated with such platforms can, however, be prevented with birefringent metasurfaces (two-dimensional surfaces with two different refractive indices) composed of a single meta-atom per unit-cell for optimized polarization multiplexing.
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Nov 15, 2018
Albert Einstein, Holograms and Quantum Gravity
Posted by Genevieve Klien in categories: holograms, particle physics, quantum physics
In the latest campaign to reconcile Einstein’s theory of gravity with quantum mechanics, many physicists are studying how a higher dimensional space that includes gravity arises like a hologram from a lower dimensional particle theory.
Aug 16, 2018
Hologram Computers
Posted by Genevieve Klien in categories: 3D printing, augmented reality, biotech/medical, entertainment, holograms, quantum physics, robotics/AI, science, security, space travel, virtual reality, wearables
Computing innovation, computer-generated images, Virtual Reality Glasses, Hybrid Reality, communications, Holographic platform, AR, VR, PC, lifelike experience, 3D cameras, cosmic computing, computer security, gaming displays, in-flight entertainment, computer code, Holographic ideal/paradigm, gaming mechanics, automotive, medical, space, spatial, holographic memory, Artificial Neural Networks, Robotics, holographic 3D, software company, mixed-realty, holographic data, hologram monitors, hologram keyboards, voice equipment, projector system, Holographic apps, HD photography, smartphones, tablets, TVs, laptops, digital displays, 360 Video, Virtual Realty Headsets, Mobile Platforms, holographic universe, ubiquitous computing paradigm, virtual images, Holoquad, Holographic Projector Pyramid, cloud computing, spaceships, teleportation, anti-gravity devices, emulation, advanced technology, light field displays, Mobile Hologram Technology, computer programs, untethered, Immersive Technology, Computer Chips, Elohim computer, custom software, mobile application development, computing library, human-computer interactions, Artificial Neural Networks, holographic memory, Spider-Robots, pop-up gaming displays, automate machinery, computer-generated simulation, 3D Pyramid, consumer electronics, personal computers, holographic images, real-world objects, hardware interconnection, missionary, virtual assistant, Computer Systems Structure, two-dimensional computer display, computerization, Projection Screen, Portable, 3D printer, Hologram goggles, 3D Holographic Projection Technology, Hologram Computer Table, hologram generator, multilevel computer, mixed reality, Bluetooth enabled, Virtual Reality Display, transparent screen display, quantum computer, computer animation, 3D plasma display, meta surface, Dark Energy, holographic interferograms, photorefractive, Holographic atomic memory, computer-generated hologram, real-time hologram, x-ray mirror mandrels, virtual wavefront recording plane, Artificial intelligence, AI, Human Resources, Advertising, Animation, Graphic Web Design, Photography, Robotics, computer science, human-robot interaction, Emergency Medical Hologram, wearable computing, bio-computing, battlefield simulations, Holographic Associative Memory, artificial neural network, Digital Avatar.
Aug 2, 2018
Black hole hologram appears in a graphene flake
Posted by Klaus Baldauf in categories: cosmology, holograms, quantum physics
Much research on black holes is theoretical since it is difficult to make actual measurements on real black holes. Such experiments also need to be undertaken over decades or longer. Physicists are therefore keen to create laboratory systems that are analogous to these cosmic entities. New theoretical calculations by a team in Canada, the US, UK and Israel have now revealed that a material as simple as a graphene flake with an irregular boundary subjected to an intense external magnetic field can be used to create a quantum hologram that faithfully reproduces some of the signature characteristics of a black hole. This is because the electrons in the carbon material behave according to the Sachdev-Ye-Kitaev model.
Some of the most important unresolved mysteries in modern physics come from the “incompatibility” between Einstein’s theory of general relativity and the theory of quantum mechanics. General relativity describes the physics of the very big (the force of gravity and all that it affects: spacetime, planets, galaxies and the expansion of the Universe). The theory of quantum mechanics is the physics of the very small – and the other three forces, electromagnetism and the two nuclear forces.
“In recent years, physicists have gleaned important new insights into these questions through the study of the SYK model,” explains Marcel Franz of the University of British Columbia in Canada, who led this research effort. “This model is an illustration of a type of ‘holographic duality’ in which a lower-dimensional system can be represented by a higher dimensional one. In our calculations, the former is N graphene electrons in (0+1) dimensions and the latter the dilation gravity of a black hole in (1+1) dimensional anti-de Sitter (AdS2) space.
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Jul 25, 2018
The Holographic Display Of The Future Is Here
Posted by John Gallagher in categories: augmented reality, holograms, virtual reality
The holographic display of the future is here and you can have one on your desk for under $600.
Ever since I saw Princess Leia appealing to Obi Wan that he was her only hope when I was 11, I’ve wanted a holographic display. Movies like Minority Report and Back to the Future II (do you remember the shark hologram that ate Marty?) have consumed thousands of people’s lives over the past few decades. But until now, no one has been able to make a scalable device that would let groups of people, unaided by a VR or AR headset, see and touch a living and moving 3D world.
That’s changing today with the launch of the Looking Glass, a new type of interface that achieves that dream of the hologram we’ve been promised for so long. The Looking Glass is technically a lightfield and volumetric display hybrid, but that’s pretty nerdy-sounding. I like to just call it a holographic display.
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Jun 27, 2018
3D printed homes and pods of Martian rock, is this what life will look like on Mars?
Posted by Klaus Baldauf in categories: 3D printing, computing, Elon Musk, habitats, holograms, space, virtual reality
ELON MUSK wants to plump humans on Mars by 2024 and the first batch of settlers could live in 3D-printed home pods that pack hologram computers.
You’ll be able to tour the Red Planet habitat in virtual reality and view a scale model of the sci-fi living space at the Goodwood Festival of Speed next month.
Jun 12, 2018
Why fascism is so tempting — and how your data could power it
Posted by Derick Lee in categories: business, cybercrime/malcode, energy, holograms
In a profound talk about technology and power, author and historian Yuval Noah Harari explains the important difference between fascism and nationalism — and what the consolidation of our data means for the future of democracy. Appearing as a hologram live from Tel Aviv, Harari warns that the greatest danger that now faces liberal democracy is that the revolution in information technology will make dictatorships more efficient and capable of control. “The enemies of liberal democracy hack our feelings of fear and hate and vanity, and then use these feelings to polarize and destroy,” Harari says. “It is the responsibility of all of us to get to know our weaknesses and make sure they don’t become weapons.” (Followed by a brief conversation with TED curator Chris Anderson)
Check out more TED Talks: http://www.ted.com
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Jan 24, 2018
Better than holograms: A new 3D projection into thin air
Posted by Genevieve Klien in categories: holograms, particle physics, space
One of the enduring sci-fi moments of the big screen—R2-D2 beaming a 3D image of Princess Leia into thin air in “Star Wars”—is closer to reality thanks to the smallest of screens: dust-like particles.
Scientists have figured out how to manipulate nearly unseen specks in the air and use them to create 3D images that are more realistic and clearer than holograms, according to a study in Wednesday’s journal Nature. The study’s lead author, Daniel Smalley, said the new technology is “printing something in space, just erasing it very quickly.”
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Jan 20, 2018
Nanoparticle gel could make mass-market low-cost Holography, LIDAR
Posted by Klaus Baldauf in categories: engineering, holograms, nanotechnology
Why aren’t holograms or related optical devices part of our everyday lives yet? The technologies can be created by using magnetic fields to alter the path of light, but the materials that can do that are expensive, brittle and opaque. Some only work in temperatures as cold as the vacuum of space.
Minjeong Cha, MSE PhD Student, applies a gel made up of chiromagnetic nanoparticles that are a conduit for modulating light to a laser apparatus. Image credit: Joseph Xu, Michigan Engineering
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