Researchers have developed advanced optical security features that use a two-piece metamaterial system to create a difficult-to-replicate optical phenomenon. Metamaterials are engineered to have a property that is not found in naturally occurring materials. The new security features could offer improved forgery protection for high-value products or banknotes and enhance encryption of information such as pin numbers that are physically sent to recipients.... PHYS.ORG · 6 days
Metamaterials used to create two-part optical security features  SCIENCE DAILY · 6 days
Researchers have developed advanced optical security features that use a two-piece metamaterial system to create a difficult-to-replicate optical phenomenon. The new security features could offer improved forgery protection for high-value products or... more
New tools to minimize risks in shared, augmented-reality environments  SCIENCE DAILY · 4 weeks
Security researchers have created ShareAR, a toolkit that lets developers build collaborative and interactive features into AR apps without sacrificing their users' privacy and security. more
Researchers discover new topological phases in a class of optical materials  PHYS.ORG · 15 hours
Optical devices create, guide, and detect electromagnetic waves and include lasers, telescopes, and solar cells. Most of the materials used in these devices are challenging for... more
Researchers demonstrate first all-metamaterial optical gas sensor  PHYS.ORG · 3 weeks
Researchers have developed the first fully-integrated, non-dispersive infrared (NDIR) gas sensor enabled by specially engineered synthetic materials known as metamaterials. The sensor has no moving parts, requires little energy to operate and is among... more
Researchers demonstrate first all-metamaterial optical gas sensor  nanowerk · 3 weeks
Researchers developed the first fully-integrated, non-dispersive infrared (NDIR) gas sensor enabled by specially engineered synthetic materials known as metamaterials. The sensor has no moving parts, requires little energy to operate and is among the... more
Researchers realize world's thinnest optical hologram with 2-D material monolayer  nanowerk · 4 weeks
Work could lead to the creation of smart watches with holographic displays, printed security cryptograms. more
First all-metamaterial optical gas sensor  SCIENCE DAILY · 3 weeks
Researchers have developed the first fully-integrated, non-dispersive infrared (NDIR) gas sensor enabled by specially engineered synthetic materials known as metamaterials. The sensor has no moving parts, requires little energy to operate and is among the smallest NDIR sensors... more
Lack of reporting on phosphorus supply chain dangerous for global food security  SCIENCE DAILY · 1 week
A new study shows that while Phosphorus is a key element to global food security, its supply chain is a black box. This can... more
All-optical neural network for deep learning  SCIENCE DAILY · 3 weeks
In a key step toward making large-scale optical neural networks practical, researchers have demonstrated a first-of-its-kind multilayer all-optical artificial neural network. Researchers detail their two-layer all-optical neural network and successfully apply it to a complex classification... more
Ultra-thin optical elements directly measure polarization  SCIENCE DAILY · 7 days
For the first time, researchers have used ultra-thin layers of 2D structures known as metasurfaces to create holograms that can measure the polarization of light. The new metasurface holograms could be used to create very fast... more
Researchers realize world's thinnest optical hologram with 2-D material monolayer  PHYS.ORG · 4 weeks
Missouri S&T researchers are demonstrating a new concept to reconstruct holographic images by using a single two-dimensional material monolayer with the thickness of less than one nanometer. Their... more
Researchers develop an optical sensor that detects very low glucose concentrations  PHYS.ORG · 6 days
The Optical Research Group of the Universitat Jaume I (GROC-UJI) has developed an optical nanoparticle sensor capable of detecting very low glucose concentrations such as those... more
Using nature to produce a revolutionary optical material  PHYS.ORG · 2 weeks
An international team of researchers has reported a new way to safeguard drones, surveillance cameras and other equipment against laser attacks, which can disable or destroy the equipment. The capability is known... more
Materials scientists build a synthetic system with compartments like real cells  SCIENCE DAILY · 4 weeks
Polymer chemists and materials scientists have achieved some notable advances that mimic Nature, but one of the most common and practical features of cells has so... more
Experts discuss food security from oceans  PHYS.ORG · 4 weeks
The world will have an additional 2 billion people to feed over the next 30 years—and doing that without decimating the planet's resources will require exploring as many options as possible. Yet, a significant option—seafood—is often... more
Optical vacuum cleaner can manipulate nanoparticles  nanowerk · 1 week
Due to its optical properties, the 'optical vacuum cleaner' can trap nanoparticles from the environment. more
Researchers demonstrate all-optical neural network for deep learning  PHYS.ORG · 3 weeks
Even the most powerful computers are still no match for the human brain when it comes to pattern recognition, risk management, and other similarly complex tasks. Recent advances in optical neural networks,... more
Seconds-scale coherence on an optical clock transition in a tweezer array  Science Magazine · 6 days
Coherent control of high-quality-factor optical transitions in atoms has revolutionized precision frequency metrology. Leading optical atomic clocks rely on the interrogation of such transitions in either... more
Using nature to produce a revolutionary optical material  nanowerk · 2 weeks
Nanocomposite protects against intense light, holds promise for expanding high-speed optical networking capacity. more
Using an optical tweezer array of laser-cooled molecules to observe ground state collisions  PHYS.ORG · 5 days
A team of researchers from Harvard University and Massachusetts Institute of Technology has found that they could use an optical tweezer array... more
Scientists develop technique to reveal epigenetic features of cells in the brain  SCIENCE DAILY · 1 week
Researchers combined two different analysis techniques into one method, to simultaneously analyze how chromosomes, along with their epigenetic features, are compacted inside of single... more
New optical nanoparticle sensor can detect very low glucose concentrations  NEWS MEDICAL · 6 days
The Optical Research Group of the Universitat Jaume I has developed an optical nanoparticle sensor capable of detecting very low glucose concentrations, such as those present in a... more
Optical vacuum cleaner can manipulate nanoparticles  PHYS.ORG · 1 week
Scientists at Tomsk Polytechnic University jointly with Russian and international colleagues developed the concept for constructing an "optical vacuum cleaner." Due to its optical properties, it can trap nanoparticles from the environment. Currently, there are no... more
Towering balloon-like features discovered near center of Milky Way  SCIENCE DAILY · 1 week
Astronomers have discovered one of the largest features ever observed in the center of the Milky Way: a pair of enormous radio-emitting bubbles that tower hundreds of light-years above and... more
Kaleidoscope mirror symmetry inspires new design for optical tools, technologies  PHYS.ORG · 2 days
In a kaleidoscope, mirrors are placed at angles to create a visual illusion of multiple, symmetric images from one original object. The number of symmetric axes in the... more
Scientists develop optical ruler that can measure down to the nanoscale  nanowerk · 2 weeks
Their achievement was accomplished using a 100-nanometre thick gold film with over 10,000 tiny slits cut into it to diffract laser light and to exploit an... more
Xenesis inks optical transceiver distribution deal  SPACE NEWS · 2 weeks
NCISCO — Xenesis, a Chicago laser communications startup, announced an agreement Sept. 3 with Hartwell Capitol Consulting of Woodbridge, Virginia, to sell optical transceivers... more
How we can make ports more sustainable—and why it matters  PHYS.ORG · 15 hours
Take a look at the objects around you. The laptop or phone you are using to read this article, the clothes you are wearing, the glass of juice... more
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