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 · 5 months
Topological defects produce exotic mechanics in complex metamaterials  PHYS.ORG · 3 weeks
Metamaterials have properties that depend on their shape and architecture. Researchers at AMOLF, Leiden University and Tel Aviv University have found a new way of designing these metamaterials and their properties by... more
Ultrafast switching of an optical bit  nanowerk · 4 days
Researchers have realized an all-optical bit that is temporarily written into a planar semiconductor nanostructure only using light and that can also be reconfigured only using optical techniques. more
Silica increases water availability for plants: Researchers discover a way to enhance food security  PHYS.ORG · 6 days
As a result of climate change, more frequent and longer drought periods are predicted in the future. Drought risks may... more
Harnessing the domino effect for metamaterials  nanowerk · 1 week
Researchers use models and experiments to guide and harness transition waves in multi-stable mechanical structures. more
Researchers demonstrate optical backflow of light  PHYS.ORG · 2 weeks
Researchers at Tel Aviv University have for the first time demonstrated the backflow of optical light propagating forward. The phenomenon, theorized more than 50 years ago by quantum physicists, has never before been demonstrated successfully in... more
Security risk for e-scooters and riders  SCIENCE DAILY · 3 weeks
New research finds e-scooters have risks beyond the perils of potential collisions. Computer science experts have published the first review of the security and privacy risks posed by e-scooters and their related software services and applications. more
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A wife-husband team will present both high-tech and low-tech solutions for improving water security at this year's American Association for the Advancement of Science (AAAS) annual... more
Certified 21 CFR Part 11 compliant lab automation software to be launched at SLAS 2020  NEWS MEDICAL · 4 weeks
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Fastest high-precision 3D printer for metamaterials with sub-micrometer accuracy  nanowerk · 2 weeks
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Image: Deforestation in Bolivia  PHYS.ORG · 4 weeks
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By adding infrared capability to the ubiquitous, standard optical microscope, researchers hope to bring cancer diagnosis into the digital era. Pairing infrared measurements with high-resolution optical images and machine learning... more
Experts: Trade wars bad for US and global energy security  PHYS.ORG · 1 week
Policy that raises barriers to international trade does not bode well for U.S. and global energy security, according to a new research paper by experts in the Center... more
Nesting nanotubes to create 1-D van der Waals heterostructures  PHYS.ORG · 3 weeks
An international team of researchers has found a new way to create 1-D heterostructures—by nesting nanotubes. In their paper published in the journal Science, the group describes how they nested... more
Improving adhesives for wearable sensors  PHYS.ORG · 2 weeks
By conveniently and painlessly collecting data, wearable sensors create many new possibilities for keeping tabs on the body. In order to work, these devices need to stay next to the skin. In a study described in ACS Omega,... more
3-D trapping of Rydberg atoms in holographic optical bottle beam traps  PHYS.ORG · 2 weeks
Researchers at CNRS, Université Paris-Saclay in France have recently demonstrated the 3-D trapping of atoms in a Rydberg state inside holographic optical bottle beam traps. Their... more
Earth from Space: Deforestation in Bolivia  ESA · 4 weeks
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More people and dwindling fish stocks create supply gap in omega-3 fatty acids  NEWS MEDICAL · 1 week
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Structural features of donated kidneys may influence their longevity in recipients  NEWS MEDICAL · 4 weeks
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For many African countries, lack of food is one of the most, pressing issues today. Dr. Catherine Nakalembe, Africa Program Lead for NASA Harvest,... more
A fast light detector made of two-dimensional materials  nanowerk · 5 days
The novel light detector consists of two-dimensional layers of different materials that are coupled to a silicon optical waveguide. In the future, this approach can also be used to make LEDs and... more
A fast light detector made of two-dimensional materials  PHYS.ORG · 5 days
Two research groups at ETH Zurich have joined forces to develop a novel light detector. It consists of two-dimensional layers of different materials that are coupled to a silicon optical waveguide. In... more
Prolonged breath-holding could have potential as part of new treatment for cardiac arrhythmias  NEWS MEDICAL · 4 weeks
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Deforestation in Bolivia  ESA · 4 weeks
Image: This Copernicus Sentinel-2 image features an area in the Santa Cruz Department of Bolivia, where part of the tropical dry forest has been cleared for agricultural use.Since the 1980s,... more
Using noise to enhance optical sensing  PHYS.ORG · 4 days
In conventional sensing methods, noise is always a problem, especially in systems that are meant to detect changes in their environment that are hardly bigger or even smaller than the noise in the system. Encountering this... more
Vision Engineering recognized as Optical Instrumentation Company of the Year  NEWS MEDICAL · 2 weeks
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First results from the Dark Energy Survey  PHYS.ORG · 4 weeks
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Lasers etch a 'perfect' solar energy absorber  PHYS.ORG · 2 weeks
The University of Rochester research lab that recently used lasers to create unsinkable metallic structures has now demonstrated how the same technology could be used to create highly efficient solar power generators. more
Flat lens gets ahead of the optical curve  nanowerk · 7 hours
Researchers dotted metasurfaces with 600-nanometer-high silicon cylinders that alters the path and speed of light as it passes through them. more
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