Controlling and bending light around an object so it appears invisible to the naked eye is the theory behind fictional invisibility cloaks.
It may seem easy in Hollywood movies, but is hard to create in real life because no material in nature has the properties necessary to bend light in such a way. Scientists have managed to create artificial nanostructures that can do the job, called metamaterials. But the challenge has been making enough of the material to turn science fiction into a practical reality.
The work of Debashis Chanda at the University of Central Florida, however, may have just cracked that barrier. The cover story in the March edition of the journal Advanced Optical Materials, explains how Chanda and fellow optical and nanotech experts were able to develop a larger swath of multilayer 3-D metamaterial operating in the visible spectral range. They accomplished this feat by using nanotransfer printing, which can potentially be engineered to modify surrounding refractive index needed for controlling propagation of light.
“Such large-area fabrication of metamaterials following a simple printing technique will enable realization of novel devices based on engineered optical responses at the nanoscale,” said Chanda, an assistant professor at UCF.
The nanotransfer printing technique creates metal/dielectric composite films, which are stacked together in a 3-D architecture with nanoscale patterns for operation in the visible spectral range. Control of electromagnetic resonances over the 3-D space by structural manipulation allows precise control over propagation of light. Following this technique, larger pieces of this special material can be created, which were previously limited to micron-scale size.
By improving the technique, the team hopes to be able to create larger pieces of the material with engineered optical properties, which would make it practical to produce for real-life device applications. For example, the team could develop large-area metamaterial absorbers, which would enable fighter jets to remain invisible from detection systems.
The Latest on: Stealth Technology
via Google News
The Latest on: Stealth Technology
- How Turkey Plans to Get Its Hands on Its Own Stealth Fighteron March 23, 2020 at 11:37 am
There are just two stealth fighters besides the F-35 that ... export of the J-20 “in order to keep J-20’s fifth-generation technology out of hostile hands.” Chinese firm Shenyang is ...
- Gfinity news: UK esports company launches new tech site Stealth Optional to expand its Community Ecosystemon March 23, 2020 at 10:48 am
Gfinity plc has launched a technology-focused website called Stealth Optional to further grow the Company’s Community Ecosystem. The third website in The Gfinity Network, StealthOptional.com joins ...
- Meet the KFX: South Korea's Very Own Future Stealth Fighter?on March 23, 2020 at 6:45 am
Key point: Seoul may be very advanced, but it likely doesn't have the resources or technology for a stealth fighter just yet. But could the KFX be a good experiment they could learn from? South Korea ...
- The stealth Jim Henson tribute that was cut from 'Star Wars: The Rise of Skywalker'on March 23, 2020 at 6:11 am
'Star Wars' creature guru Neal Scanlan reveals how his team created a character inspired by Jim Henson's 'Labyrinth'.
- Here's the stealth 'Star Wars' tribute to Jim Henson that was cut from 'The Rise of Skywalker'on March 20, 2020 at 12:42 pm
"Star Wars" creature guru Neal Scanlan reveals how his team created a character inspired by Jim Henson's "Labyrinth" that ended up on the cutting-room floor and other secrets of the concluding chapter ...
- Surface-anchored framework for generating RhD-epitope stealth red blood cellson March 20, 2020 at 11:26 am
The chemical framework completely obstructed the RhD antigens on the cell surface, and the assessments of both blood transfusion in a mouse model and immunostimulation with human RhD-positive RBCs in ...
- Cyber Startup Emerges From ‘Stealth Mode’ Backed By $17Mon March 17, 2020 at 2:41 pm
Law360 (March 17, 2020, 5:39 PM EDT) -- Cybersecurity startup Axis Security unveiled its new platform Tuesday and said it raised $17 million in early-stage investments led by technology-focused ...
- Network security startup Axis Security emerges from stealth with $17M in fundingon March 17, 2020 at 5:12 am
Network security startup Axis Security has launched out of stealth mode with $17 million in funding from Cyberstarts ... The service can deploy with no agent or network changes required, with Adaptive ...
- Wizard Startup "The Cauldron" Goes Into Investment Stealth Modeon March 16, 2020 at 5:00 pm
technology, and design" has entered into Investment Stealth Mode for its community of fantasy fans. The company, which became known around the world for its immersive Potions Experience that ...
- Worlds looks to ‘transform humanity’ with spatial AI technologyon March 16, 2020 at 6:43 am
Worlds’ software allows users to create AI-powered models of real-world spaces, letting them to analyze and learn from their physical surroundings.
via Bing News