Physicists test the holographic principle in a quest to merge gravity with quantum theory.
Category: holograms
A new camera setup can record three-dimensional movies with a single pixel. Moreover, the technique can obtain images outside the visible spectrum and even through tissues. The Kobe University development thus opens the door to holographic video microscopy.
Holograms are not only used as fun-to-look-at safety stickers on credit cards, electronic products or banknotes; they have scientific applications in sensors and in microscopy as well. Traditionally, holograms require a laser for recording, but more recently, techniques that can record holograms with ambient light or light emanating from a sample have been developed.
There are two main techniques that can achieve this: one is called “FINCH” and uses a 2D image sensor that is fast enough to record movies, but is limited to visible light and an unobstructed view, while the other is called “OSH,” which uses a one-pixel sensor and can record through scattering media and with light outside the visual spectrum, but can only practically record images of motionless objects.
A new kind of microscope called ELVIS is heading to the International Space Station to change how we study life in space. By creating stunning 3D holograms of cells, it allows scientists to observe how organisms adapt to microgravity and other extreme conditions. This could help us understand whe
UPNA researchers created a 3D mid-air display allowing natural hand interaction with virtual objects using an elastic diffuser and high-speed projections. Dr. Elodie Bouzbib from the Public University of Navarra (UPNA), together with Iosune Sarasate, Unai Fernández, Manuel López-Amo, Iván Fernánd
The approach uses lasers and holograms to detect misalignments as small as 0.017 nanometers. Researchers at the University of Massachusetts Amherst have developed a new method for aligning 3D semiconductor chips by shining a laser through concentric metalenses patterned onto the chips, creating a
Futuristic holograms you can manipulate have become a reality sooner than we thought, thanks to breakthrough display.
You’ve probably seen a movie in which a character pulls up a hologram display that they can poke, prod, and manipulate as easily as you could mess with a real object sitting on a desk in front of you.
The idea is so ubiquitous in science fiction that it’s become nearly synonymous with the word “hologram.” In almost every news story written about hologram technology and how far it has come, at some point, a disclaimer has to be made explaining that ‘it’s not quite Tony Stark tech, but it’s still cool!’
Researchers have succeeded, for the first time, in displaying three-dimensional graphics in mid-air that can be manipulated with the hands. The team includes Doctor Elodie Bouzbib, from Public University of Navarra (UPNA), together with Iosune Sarasate, Unai Fernández, Manuel López-Amo, Iván Fernández, Iñigo Ezcurdia and Asier Marzo (the latter two, members of the Institute of Smart Cities).
“What we see in films and call holograms are typically volumetric displays,” says Bouzbib, the first author of the work. “These are graphics that appear in mid-air and can be viewed from various angles without the need for wearing virtual reality glasses. They are called true-3D graphics.
They are particularly interesting as they allow for the ‘come-and-interact’ paradigm, meaning that the users simply approach a device and start using it.
Quantum holograms using polarized light and metasurfaces enable precise control over entangled holographic information, advancing practical applications in quantum communication and anticounterfeiting technologies
Korean researchers have developed a digital holography processor that converts two-dimensional (2D) videos into real-time three-dimensional (3D) holograms. This technology is expected to play a key role in the future of holography, as it enables the instantaneous transformation of ordinary 2D videos into 3D holograms.
The Electronics and Telecommunications Research Institute (ETRI) has announced the development of a programmable semiconductor-based digital holographic media processor (RHP) using Field Programmable Gate Array (FPGA) technology. This processor can convert 2D video into 3D holograms in real-time.
The real-time holography processor is the world’s first to utilize high-bandwidth memory (HBM) to generate real-time, full-color 3D holograms from 2D video. Notably, all the hardware required for hologram generation is integrated into a single system-on-chip (SoC).